KR20010000091A - System and method for circulating iron and steel on a internet - Google Patents

Abstract

PURPOSE: An internet steel materials distribution method is provided to compare the inputted sales and purchase information which is submitted from the purchaser and the seller through the internet and to transmit those sales and purchase information that conforms to each other's conditions to the appropriate purchaser and seller. CONSTITUTION: An internet steel materials distribution method is composed of connection, input, search, and transmission. A seller connects to the main server and inputs the detailed product sales data and information regarding the product list, product category and conditions, standards, quantity, weight, and price(S10). A purchaser connects to the main server and inputs the detailed purchase data and information regarding the product list, product category and conditions, standards, quantity, weight and price(S20). Once the data is inputted, the steel materials sales data is searched to locate a sales/purchase condition that conforms to the inputted conditions(S30). If a conforming seller/purchaser exists, the main server transmits the purchase/sales information to the purchaser and the seller(S40).

Description

System and method for circulating iron and steel on a internet}

The present invention relates to a system and method for commerce of steel materials based on the Internet.

More specifically, the main server is connected to a plurality of seller computers and a plurality of buyers through a network network to compare the sales steel material received from the seller with the purchased steel material data received from the buyer to match the sales conditions and the purchase conditions. The present invention relates to an internet steel material distribution system and method for transmitting sales information to sellers and buyers.

In general, electronic commerce is a commerce using information technology such as electronic document exchange, e-mail, electronic bulletin board, fax, electronic funds transfer, etc., without using paper documents.It is used to sell, order, and advertise products and services through network communication networks. Means all economic activity, including

This e-commerce not only supports differentiated services to consumers in accordance with their various needs and consumption tendencies, but also creates a business opportunity for merchants to secure an unlimited sales network worldwide.

As a result, the e-commerce business utilizing the Internet cyberspace is actively being promoted worldwide.

In general, small and medium-sized steel materials (including construction materials) distributors or contractors who work in the building industry cooperate with each other by exchanging or distributing steel materials.

However, conventionally, when buyers want to purchase necessary steel materials or sellers want to sell steel materials that are not needed, only the fixed fixed customers are traded off-line, so the choice of selling or purchasing is not only narrow but also reliable. There was a problem of falling.

Accordingly, the present invention has been made to solve the above problems, the main server is connected to a plurality of seller computers and a plurality of buyers through a network communication network sales steel material received from the seller and steel material data received from the buyer The purpose of the present invention is to provide an internet steel material distribution system and method for transmitting steel information to sellers and buyers if there are steel materials that match the sales conditions and purchase conditions.

The system according to the present invention for achieving the above object is connected to the main site through the network communication network, and displays the sales registration screen downloaded from the main site, the item received from the seller through the sales registration screen, A plurality of seller computers for uploading the sales steel material data and the personal information of the division, status, specification, quantity, weight, and price to the main site, and displaying a transaction information message screen downloaded from the main site; Access to the main site through the network communication network, display the purchase registration screen downloaded from the main site, and purchase steel materials of items, classification, status, specifications, quantity, weight, price received from the buyer through the purchase registration screen A plurality of buyer computers for uploading data and personal information to a main site and displaying a transaction information message screen downloaded from the main site; The sales steel material data and personal information of items, classification, status, specification, quantity, weight, and price are inputted from the plurality of seller computers to make a database, and the items, classification, status, specifications, quantity, and weight are received from the plurality of buyer computers. In addition, the purchase steel material data and personal information of the price is input and databased. When the purchased steel material data is input, the sales steel material data is searched to determine whether there are steel materials that match the sales conditions and purchase conditions. If there is a steel material matching the purchase conditions, characterized in that it consists of a main server for displaying the transaction information message screen to the seller computer and the buyer computer through the network communication network.

In addition, the method according to the present invention for achieving the above object, in the Internet steel material distribution method in which the main server is connected to a plurality of seller computers and a plurality of buyers through a network communication network, the seller is connected to the main server A tenth step of inputting sales steel material data and personal information of items, classification, status, specification, quantity, weight, price according to a predetermined form; A 20th step in which a purchaser connects to the main server and inputs purchase steel material data and personal information of items, classification, status, specifications, quantity, weight, and price according to a predetermined form; A thirtieth step of searching for sales steel material data when the purchase steel material data is input from the main server to determine whether there are steel materials that match the sales condition and the purchase condition; If there is a steel material matching the sales conditions and purchase conditions, the main server is characterized in that the forty-step step of transmitting the sales information to the seller and the buyer.

1 is a block diagram schematically showing the configuration of the Internet steel material distribution system according to the present invention,

2 is a block diagram showing in detail the configuration of the main server of FIG.

Figure 3 is a flow chart schematically showing the operation steps of the Internet steel material distribution method according to the present invention,

4 is a flowchart illustrating the tenth step of FIG. 3 in detail;

FIG. 5 is a flowchart showing the twentieth step of FIG. 3 in detail;

FIG. 6 is a flowchart illustrating the 40th step of FIG. 3 in detail;

7 is a flow chart for explaining the process of sending and receiving steel according to the present invention,

8 to 16 are screen diagrams displayed on a user computer screen according to the present invention;

17 is an overall configuration diagram for explaining the Internet steel material distribution system and the method according to the present invention.

Explanation of symbols on the main parts of the drawings

10: network communication network 20: seller computer

30: Buyer Computer 40: Main Server

41: data input unit 42: main control unit

43: database unit 44: communication control unit

Hereinafter, embodiments of the system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing an internet steel material distribution system according to the present invention, Figure 2 is a block diagram showing in detail the main server according to the present invention.

As shown in FIG. 1, the system according to the present invention comprises a network communication network 10; A plurality of merchant computers 20; A plurality of shopper computers 30; It is composed of a main server 40.

Here, the network communication network 10 is a communication network such as the Internet, so that communication lines between a plurality of seller computers 20, a plurality of purchaser computers 30, and a main server 40 are connected so that data communication is performed according to reverse auction agency. do.

In addition, the plurality of seller computers 20 access the main site through the network communication network 10, display the sale registration screen downloaded from the main site, and the items inputted from the seller through the sale registration screen, and are classified. Upload the steel material data and personal information of the state, specification, quantity, weight, and price to the main site, and display the transaction information message screen downloaded from the main site.

In addition, the plurality of buyer computers 30 access the main site through the network communication network 10, display the purchase registration screen downloaded from the main site, and the items, divisions, Upload the steel material data and personal information of the state, specification, quantity, weight, and price to the main site, and display the transaction information message screen downloaded from the main site.

In addition, the main server 40 receives the sales steel material data and personal information of items, divisions, states, specifications, quantities, weights, and prices from the plurality of seller computers 20 to form a database. (30) from the purchase steel material data and personal information of the item, classification, status, specification, quantity, weight, price from the input and database, and if the purchased steel material data is inputted, the sales steel material data is searched and the sales conditions and It is determined whether there are steel materials that match the purchase conditions, and if there are steel materials that match the sales conditions and purchase conditions, the transaction information message screen is displayed on the seller computer 20 and the buyer computer 30 through the network communication network 10. Display.

Here, the main server 40 may include a data input unit 41 as shown in FIG. 2; Main control section 42; Database portion 43; Communication control unit 440.

Here, the data input unit 41 receives an operation program related to steel material distribution from the server operator.

In addition, the main control unit 42 controls the registration of the sales steel material data received from the seller, the registration of the purchase steel material data received from the buyer, according to the operating program received from the data input unit 41 When the purchased steel material data is input, the sales steel material data is searched to determine whether there is a steel material that matches the sales condition and the purchase condition, and if there is a steel material that matches the sales condition and the purchase condition, the controller controls to generate a transaction information message. .

In addition, the database unit 43 registers the sales steel material data and the personal information received from the seller under the control of the main controller 42, and registers the purchase steel material data and the personal information received from the buyer.

In addition, the communication control unit 44 outputs the sales steel material data and the personal information received from the seller computer 20 through the network communication network 10 to the main control unit 42, and outputs the network communication network 10. Outputs the purchase steel material data and the personal information received from the purchaser computer 30 to the main control unit 42, and the sales information message received from the main control unit 42 through the network communication network (10) Output to computer 20 and purchaser computer 30.

Next, the operation of the system according to the present invention configured as described above will be described in detail with reference to FIGS. 3 to 17.

3 is a flow chart schematically showing an operation step of the Internet steel material distribution method according to the present invention, Figure 4 is a flow chart showing in detail the tenth step of Figure 3, Figure 5 shows in detail the twenty step of Figure 3 6 is a flowchart illustrating the 40th step of FIG. 3 in detail, FIG. 7 is a flowchart illustrating a steel material shipping and receiving process according to the present invention, and FIGS. 8 to 16 are users according to the present invention. Fig. 17 is a screen diagram displayed on a computer screen, and Fig. 17 is an overall configuration diagram for explaining an internet steel material distribution system and method thereof according to the present invention.

First, when a plurality of sellers or a plurality of buyers intend to commerce steel materials through a network communication network 10 such as the Internet, a web browser for accessing the main server 40 should be installed on the computer.

Accordingly, when the seller or the buyer executes the web browser installed on the seller computer 20 or the buyer computer 30 and enters a URL, the seller or the buyer performs communication connection with the main server 40 (S11 and S21). 40 displays the initial screen and the login screen on the seller computer 20 or the purchaser computer 30 (S12, S22).

The initial screen includes a company introduction, a line advertisement, and a member registration as shown in FIG. 8.

Accordingly, even if the seller or the buyer who is connected to the main server 40 by communication is a non-member, it can be inquired by clicking the company introduction, line advertisement hyperlink.

At this time, when the seller or the buyer clicks the member registration hyperlink to register, the main server 40 displays the member registration screen on the seller computer 20 or the buyer computer 30.

The member registration screen, as shown in FIG. 10, ID field, password field, registrant classification combo box, name (company name) field, resident registration number (business registration number) field, business combo box, business combo box, phone number field, It includes a fax number field, an address field, a confirmation button, a cancel button, and a correction button.

Here, the seller or buyer can click the registrant classification combo box to select an individual or a corporation, click the business combo box to select wholesale or retail, and click the business combo box to select steel or building materials. .

Accordingly, when the seller or the buyer enters the member registration information in various fields of the member registration screen and clicks the confirmation button, the main server 40 inputs the member registration information from the seller computer 20 or the buyer computer 30. Receive and register in the database.

On the other hand, if the seller or the buyer enters the login data of the ID and password through the login screen (as shown in Figure 8), the main server determines whether to register the member based on the input login data (S13, S23) If the registered member, the main screen is displayed on the seller computer 20 or the buyer computer 30 (S14, S24).

As shown in FIG. 9, the main screen includes items for sale registration, sale inquiry, purchase registration, purchase inquiry, and line advertisement registration.

Accordingly, when the seller clicks the sale registration hyperlink, the main server 40 displays the sale registration screen on the seller computer 20 (S15).

As shown in FIG. 11, the sales registration screen includes a personal information combo box, an item combo box, and a category including a seller classification combo box, a name (company name) field, a social security number (business registration number) field, a phone number field, an address field, and the like. It includes a combo box, a status combo box, a specification field, a quantity field, a weight field, a price field, a storage place field, a remark field, a confirmation button, a cancel button, and a correction button.

Here, the seller can click on the combo box above to select steel materials, section steel, stainless steel, etc., click on the combo box to select HR beam, coil or steel plate, and click on the status combo box. You can choose

The division and shooting are presented according to the national standard product inventory table.

Accordingly, when the sales steel material data and personal information of items, division, status, standard, quantity, weight, and price are input from the seller through the sales registration screen, the main server 40 registers in the database (S16).

At this time, the main server 40, in order to register the sales steel material data in the database, classified by item, classification, status, specification, quantity, weight, price, each sorted from the smallest value to the largest value Then register.

Accordingly, when the seller or the buyer clicks the sales inquiry hyperlink on the main screen (as shown in FIG. 9), the main server 40 executes a search engine to display items, categories, states, specifications, A sales inquiry message screen is generated based on the registered sales steel material data classified by quantity, weight, and price, and displayed on the seller computer 20 or the purchaser computer 30.

Meanwhile, when the buyer clicks on the purchase registration hyperlink on the main screen (as shown in FIG. 9), the main server 40 displays the purchase registration screen on the buyer computer 20 (S25).

As shown in FIG. 12, the purchase registration screen includes a personal information combo box, an item combo box, and a combination of a buyer classification combo box, a name (company name) field, a social security number (business registration number) field, a phone number field, an address field, and the like. It includes a combo box, a status combo box, a specification field, a quantity field, a weight field, a price field, a storage place field, a remark field, a confirmation button, a cancel button, and a correction button.

Here, the buyer can click on the item combo box to select steel material, section steel or stainless steel, etc., click on the combo box to select HR beam, coil or steel plate, etc. You can choose

The division and shooting are presented according to the national standard product inventory table.

Accordingly, when the purchase steel material data and personal information of the item, category, status, standard, quantity, weight, and price are input from the purchaser through the purchase registration screen, the main server 40 registers in the database (S26).

At this time, the main server 40, in order to register the purchase steel material data in the database, sorted by item, classification, status, standard, quantity, weight, price, each sorted from small value to large value Then register.

Accordingly, when the seller or the buyer clicks the purchase inquiry hyperlink on the main screen (as shown in FIG. 9), the main server 40 executes a search engine to display items, categories, statuses, specifications, and the like in the database. A purchase inquiry message screen is generated based on the registered steel material data classified by quantity, weight, and price, and displayed on the seller computer 20 or the buyer computer 30.

On the other hand, when the seller or the buyer clicks the line advertisement registration hyperlink on the main screen (as shown in FIG. 9), the main server 40 displays the line advertisement registration screen on the seller computer 20 or the buyer computer ( 30) (S61).

The line advertisement registration screen, as shown in FIG. 13, a personal information field and a registration classification combo box including a registrant classification combo box, a name (company name) field, a resident registration number (business registration number) field, a phone number field, an address field, and the like. Includes type selection combo box, item combo box, division combo box, status combo box, specification field, quantity field, weight field, price field, storage field field, multi item field, confirm button, cancel button, and correct button. .

Here, the seller or buyer can click on the above classification combo box to select the sale or purchase, click the type selection combo box to select a single item or multiple items, and click the item combo box to select steel material or section steel or It is possible to select stainless steel, etc. Click on the combo box to select HR beam, coil or steel plate, and click on the status combo box to select up or down.

The division and shooting are presented according to the national standard product inventory table.

Accordingly, when the steel material data and the personal information of the sale / purchase, item, classification, status, specification, quantity, weight, and price are input from the seller or buyer through the line advertisement registration screen, the main server 40 enters the database. It registers (S62).

At this time, the main server 40, in registering the Joule advertising data in the database, sorted by item, division, status, specification, quantity, weight, price, each sorted from the smallest value to the largest value Register.

Accordingly, when the seller or the buyer clicks the line advertisement search hyperlink on the initial screen (as shown in FIG. 8), the main server 40 executes a search engine to display items, categories, states, and specifications in the database. Based on the line advertisement data classified by quantity, weight, and price, a line advertisement inquiry message screen is generated and displayed on the seller computer 20 or the buyer computer 30.

On the other hand, the main server 40 retrieves the sales steel material data registered in the database in the 26th step (S26) and the sales steel material data registered in the database in the 16th step (S16) and the sales conditions and It is determined whether there is a steel material that matches the purchase conditions (S30), and if there is a steel material that matches the sales conditions and the purchase conditions, the sales information is output to the seller computer 20 and the purchaser computer 30 (S40).

That is, when the buyer clicks the confirmation button on the purchase registration screen (as shown in FIG. 12), the main server 40 automatically displays the transaction terms message screen (as shown in FIG. 16) on the buyer computer 30. Display).

When the buyer confirms the transaction agreement and clicks the confirmation button on the transaction agreement message screen, the main server 40 displays the payment method selection screen on the purchaser computer 30.

As shown in FIG. 14, the payment method selection screen includes online remittance, direct debit, PC banking, credit card, and direct payment items, so that a buyer can select a payment method.

At this time, when the buyer selects the online remittance, the main server 40 displays the payment delivery screen on the buyer computer 30 (S41).

The payment delivery screen includes a bank name field, an account number field, an account holder field, a confirmation button, a cancel button, and a correction button as shown in FIG. 15.

Accordingly, when the payment delivery data is input from the buyer through the payment delivery screen, the main server 40 accesses the corresponding bank server and checks whether there is a balance in the account (S42).

Accordingly, if there is no balance in the account, the main server 40 displays the lack of balance message screen on the buyer computer 30.

In the case of a credit card payment, the main server 40 accesses the credit card company server and performs a credit inquiry. If the credit inquiry result is poor, a credit failure message screen is displayed on the purchaser computer 30.

On the other hand, if the balance check or credit inquiry of the buyer is satisfactory, the main server 40 transmits the transaction information including the buyer's personal information to the seller computer 20 and the buyer's computer 30 including the seller's personal information.

That is, the main server 40 prepares the sales information by E-mail and transmits the sales information to the seller computer 20 and the buyer computer 30, so that the seller and the buyer can easily check the sales information.

Accordingly, according to the transaction terms (as shown in FIG. 16), when the buyer deposits the corresponding amount into the account of the main server 40 operator to purchase steel materials, the main server 40 connects to the bank server. After confirming this, the e-mail is transmitted to the seller computer 20 to notify the seller (S61).

Accordingly, the seller sends the E-mail to the main server 40 after sending the steel material to the buyer to inform them of this (S62).

In addition, the buyer receives the corresponding steel materials (S42) and sends an e-mail to the main server 40 to notify it (S63).

Accordingly, after the main server 40 deposits the corresponding amount in the seller's account, the main server 40 sends the E-mail to the seller computer 20 to notify the seller (S64).

In addition, by designating the plurality of partner sites as a member company and configuring the plurality of seller computers 20 or the plurality of buyer computers 30 to link specific partner sites on the main site, exchange with other like companies. Service is available.

As described above, in the present invention, a main server is connected to a plurality of seller computers and a plurality of buyers through a network communication network, and the sales steel material data received from the seller is compared with the purchase steel material data received from the buyer. If there is a steel material that matches the conditions, the sales information is sent to the seller and the buyer, thereby providing the seller with an infinite network of sales area at a low cost, as well as wider choice of buyers at a lower cost. The effect is that small and medium-sized steel materials (including construction materials) distributors or builders can smoothly distribute their own steel materials.

It also has the effect that the main server operator improves reliability by playing an arbitration role between the seller and the buyer.

In addition, by classifying sales steel materials and purchased steel materials by item, division, condition, specification, quantity, weight, price on the main server and installing a search engine, it is easy to search according to search terms entered by sellers and buyers. It works.

Herein, while the present invention has been described with reference to the preferred embodiments, those skilled in the art will variously modify the present invention without departing from the spirit and scope of the invention as set forth in the claims below. And can be changed.

Claims (12)

A network communication network 10 which connects unspecified communication lines so that data communication is performed between them; Access to the main site through the network communication network 10, and display the sales registration screen downloaded from the main site, the item, classification, status, specifications, quantity, weight, price of the input from the seller through the sales registration screen A plurality of seller computers 20 for uploading steel material data and personal information to a main site and displaying a transaction information message screen downloaded from the main site; Access to the main site through the network communication network 10, and display the purchase registration screen downloaded from the main site, the item, classification, status, specifications, quantity, weight, price of the input from the buyer through the purchase registration screen A plurality of purchaser computers 30 for uploading purchase steel material data and personal information to a main site and displaying a transaction information message screen downloaded from the main site; The sales steel material data and personal information of items, divisions, states, specifications, quantities, weights, and prices are inputted from the plurality of seller computers 20 and databased, and the items, divisions, states from the plurality of buyer computers 30 are obtained. And database the received steel material data and personal information of the standard, quantity, weight, price, and if the purchased steel material data is inputted, the sales steel material data is searched to see if there are steel materials that match the sales conditions and purchase conditions. If there is a steel material that is determined to match the sales conditions and purchase conditions, it consists of the main server 40 to display the transaction information message screen on the seller computer 20 and the buyer computer 30 through the network communication network (10) Internet steel material distribution system characterized in that. The method of claim 1, wherein the main server 40, A data input unit 41 for receiving an operation program related to steel material distribution from a server operator; Controls the registration of the sales steel material data received from the seller, the registration of the purchase steel material data received from the buyer, and sells when the purchase steel material data is input in accordance with the operation program received from the data input unit 41 A main control unit 42 for retrieving the steel material data to determine whether there is a steel material that matches the sales condition and the purchase condition, and generating a sale information message when there is a steel material that matches the sale condition and the purchase condition; A database unit 43 registering sales steel material data and personal information received from a seller under the control of the main controller 42 and registering purchase steel material data and personal information received from a buyer; And Outputs steel material data and personal information received from the seller computer 20 through the network communication network 10 to the main controller 42 and receives from the buyer computer 30 through the network communication network 10. The purchase steel material data and the personal information are output to the main control unit 42, and the sales information message received from the main control unit 42 is transmitted through the network communication network 10 to the corresponding seller computer 20 and the buyer computer 30. Internet steel material distribution system, characterized in that consisting of a communication control unit 44 for outputting. The method of claim 1, wherein the main server 40, Designate the plurality of partner sites as a member company, and the plurality of merchant computer 20 or a plurality of buyer computer 30 is configured to link a specific partner site on the main site, characterized in that the Internet steel material distribution system . In the Internet steel material distribution method in which the main server 40 is connected to the plurality of merchant computers 20 and the plurality of buyers 30 through the network communication network 10, A tenth step (S10) in which the seller proceeds to the main server 40 and inputs sales steel material data and personal information of items, division, status, specification, quantity, weight, price according to a predetermined form; A 20th step (S20) in which the purchaser proceeds to the main server 40 and inputs the purchase steel material data and the personal information of the item, classification, state, specification, quantity, weight, price according to a predetermined form; A thirtieth step (S30) of retrieving the sales steel material data when the purchase steel material data is input from the main server 40 to determine whether there are steel materials that match the sales condition and the purchase condition; If there is a steel material matching the sales conditions and purchase conditions, the main steel 40, the Internet steel material distribution method comprising the step (40) of transmitting the sales information to the seller and the buyer. The method of claim 4, wherein the tenth step (S10), An eleventh step (S11) in which the seller attempts a communication connection to the main server 40; A twelveth step (S12) in which the main server 40 displays a login screen on the seller computer 20 when a communication connection is made; A thirteenth step (S13) of determining whether the main server 40 is a registered member when receiving login data of an ID and a password from a seller through the login screen; A fourteenth step (S14) in which the main server (40) displays a main screen on the seller computer (20) if the registered member is determined as the thirteenth step (S13); A fifteenth step (S15) in which the main server 40 displays the sale registration screen on the seller computer 20 when the seller registration request is received from the seller through the main screen; 16th step (S16) in which the main server 40 registers in the database when receiving the sales steel material data and the personal information of the item, division, state, standard, quantity, weight, price from the seller through the sale registration screen. Internet steel material distribution method characterized in that consisting of. The method according to claim 5, wherein in the sixteenth step S16, In order to register the sales steel material data in the database, it is classified by item, classification, condition, specification, quantity, weight, price, and then sorted in order from small value to big value. Distribution method. The method of claim 6, When the sales inquiry request is input from the seller or the buyer through the main screen, the main server 40 executes a search engine, and the sales steel materials classified by item, classification, status, specification, quantity, weight, and price are registered in the database. Internet sales of steel materials, characterized in that by generating a sales inquiry message screen based on the data displayed on the seller computer (20) or the buyer computer (30). The method of claim 4, wherein the twentieth step (S20), A twenty-first step (S21) in which a purchaser attempts a communication connection to the main server 40; A twenty-second step of displaying a login screen on the purchaser computer 20 by the main server 40 when a communication connection is made (S22); A twenty-third step (S23) of determining whether the main server 40 is a registered member when receiving login data of an ID and a password from a purchaser through the login screen; A twenty-fourth step (S24) of displaying the main screen on the purchaser computer (20) by the main server (40) if the registered member is determined in the twenty-third step (S13); A twenty-fifth step (S25) in which the main server 40 displays the purchase registration screen on the purchaser computer 20 when a purchase registration request is received from the purchaser through the main screen; The 26th step (S26) in which the main server 40 registers in the database when the purchase steel material data and personal information of items, division, status, standard, quantity, weight, and price are received from the purchaser through the purchase registration screen. Internet steel material distribution method characterized in that consisting of. The method of claim 8. When the purchase inquiry request is input from the seller or the buyer through the main screen, the main server 40 executes a search engine, and purchases steel materials classified by item, classification, status, specification, quantity, weight, and price in a database. A method for distributing Internet steel materials, characterized by generating a purchase inquiry message screen based on data and displaying the same on a seller computer (20) or a buyer computer (30). The method of claim 4, wherein the 40th step (S40), A 41 th step (S41) of displaying, on the purchaser's computer, the main server 40, if there is a steel material having the same sales condition and purchase condition, on the purchaser computer 20; Upon receiving payment delivery data of a bank name or card company name, account number or card number, account holder or customer name from the buyer through the payment delivery screen, the main server 40 accesses the corresponding bank server or card company server and checks or credits the balance. A 42nd step (S42) of performing an inquiry; If the buyer's balance inquiry or credit inquiry result is satisfactory, the main server 40 transmits the sales information including the purchaser's personal information to the seller's computer 20 and at the same time the sales information including the seller's personal information to the buyer's computer 30. Internet steel material distribution method comprising the 43rd step of transmitting (S43). The method of claim 4, wherein A 61 st step (S61) of the main server 40 displaying the line advertisement registration screen on the seller computer 20 or the buyer computer 30 when the line advertisement registration request is received from the seller or the buyer through the main screen; The main server 40 is registered in the database upon receiving the steel material data and the personal information of the sale / purchase selection, item, classification, status, standard, quantity, weight, and price from the seller or buyer through the line advertisement registration screen. Internet steel material distribution method characterized in that it comprises a sixty-second step (S62). The method of claim 11 When the advertisement request for a line advertisement is received from the seller or the buyer through the initial screen, the main server 40 executes a search engine to classify the database into sales / purchase, item, classification, status, specification, quantity, weight, and price. A method for distributing internet steel materials, characterized in that a Joule advertisement inquiry message screen is generated based on the registered joule advertisement data and displayed on the seller computer (20) or the buyer computer (30).