CN203215115U - Longitudinal submerged arc welding composite steel pipe for conveying acid media - Google Patents

Longitudinal submerged arc welding composite steel pipe for conveying acid media Download PDF

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Publication number
CN203215115U
CN203215115U CN 201320191984 CN201320191984U CN203215115U CN 203215115 U CN203215115 U CN 203215115U CN 201320191984 CN201320191984 CN 201320191984 CN 201320191984 U CN201320191984 U CN 201320191984U CN 203215115 U CN203215115 U CN 203215115U
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CN
China
Prior art keywords
submerged arc
connection joint
arc welding
steel pipe
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320191984
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Chinese (zh)
Inventor
韦再生
刘奎
毛学明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI YUEYUECHAO STEEL TUBE CO Ltd
Original Assignee
SHANGHAI YUEYUECHAO STEEL TUBE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI YUEYUECHAO STEEL TUBE CO Ltd filed Critical SHANGHAI YUEYUECHAO STEEL TUBE CO Ltd
Priority to CN 201320191984 priority Critical patent/CN203215115U/en
Application granted granted Critical
Publication of CN203215115U publication Critical patent/CN203215115U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a longitudinal submerged arc welding composite steel pipe for conveying acid media. The longitudinal submerged arc welding composite steel pipe comprises steel plates which are formed by compounding steel basic layers made of GB353116MnDR and anti-corrosion layers made of GB/T423706Cr19Ni10. The connection joint of the steel plates is connected in a welding mode, and the medium connection joint of the steel plates, the connection joint of the inner anti-corrosion layers and the connection joint of the outer steel basic layers are welded. The medium connection joint is positioned and sealed through GMAW with H08D welding wires, the outer connection joint is refined-welded through SAW, and the welding materials are H08D with specification of ISO14174-SAFB. The inner connection joint is refined-welded through SAW, and the welding materials are ISO14343-A S1910 and ISO14174-SAFB. The longitudinal submerged arc welding composite steel pipe has the advantages that the phenomena of hardening cracking and disengaging and the like of the anti-corrosion layers are avoided.

Description

Carry acid medium vertical masonry joint submerged arc welding composite steel tube
Technical field
The utility model relates to a kind of vertical masonry joint submerged arc welding composite steel tube, relates in particular to the structure of the welding part of this composite steel tube.
Background technique
Carry acidic fluid medium (as nitric acid, sulfuric acid, hydrochloric acid etc.) to use steel pipe, because acid medium has corrosivity, people, environment had very big danger, therefore the steel pipe corrosion resistance is required very highly, acid medium is much slow during than room temperature to the corrosion reaction of steel tube surface under low temperature environment simultaneously.Thereby this type of steel pipe must have good corrosion resistance, should have good low-temperature flexibility simultaneously.As with common line pipe (as the GB353116MnDR material), by increasing interior anticorrosive coat, can there be joint applying condition of poor, phenomenons such as anticorrosive coat sclerosis cracking, disengaging may take place during one's term of military service, maintenance cost height but life-span are short, also cause the leakage accident easily; As using pure Stainless Steel Tube (as the GB/T423706Cr19Ni10 material), cost is too high.
Summary of the invention
The utility model technical issues that need to address have provided a kind of conveying acid medium with vertical masonry joint submerged arc welding composite steel tube, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: steel plate; Described steel plate is that the base steel layer of GB353116MnDR and anticorrosion layer that material is GB/T423706Cr19Ni10 are composited by material; The joint of described steel plate is by being welded to connect; Described welded structure is inter-engagement place, inboard anticorrosion layer junction point and outside base steel layer junction point; Described inter-engagement place adopts GMAW location joint close, and the welding wire that uses is H08D; Described outside junction point adopts SAW astute and able, and the wlding that uses is ISO14174-S A FB as H08D, model; Described inboard junction point adopts SAW astute and able, and the wlding that uses is ISO14343-A S1910+ISO14174-S A FB.
Compared with prior art, the beneficial effects of the utility model are: phenomenons such as anticorrosive coat sclerosis cracking, disengaging can not take place.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 1: the utility model comprises: steel plate; Described steel plate is that the base steel layer 1 of GB353116MnDR and anticorrosion layer 2 that material is GB/T423706Cr19Ni10 are composited by material; The joint of described steel plate is by being welded to connect; Described welded structure is inter-engagement place 3, inboard anticorrosion layer junction point 5 and outside base steel layer junction point 4; Described inter-engagement place 3 adopts GMAW location joint close, and the welding wire that uses is H08D; Described outside junction point 4 adopts SAW astute and able, and the wlding that uses is ISO14174-S A FB as H08D, model; Described inboard junction point 5 adopts SAW astute and able, and the wlding that uses is ISO14343-A S1910+ISO14174-S A FB.
The welding wire that adopt the base steel layer of GB353116MnDR, anticorrosion layer that material is GB/T423706Cr19Ni10, GMAW location joint close in the utility model, uses is astute and able as H08D, SAW, and the wlding that uses can both be found on the technical manual in this field as ISO14343-A S1910+ISO14174-S A FB as ISO14174-S A FB and the wlding that uses as H08D, model.
The utility model is with base steel (1, material is GB353116MnDR)+anticorrosion layer (2, material is GB/T423706Cr19Ni10) Clad Steel Plate is after milling limit, edges of boards pre-bending, O forming, prewelding GMAW locatees joint close (3, use welding wire H08D(Atlantic Ocean welding consumables)), astute and able (4, use wlding H08D(Atlantic Ocean welding consumables)+ISO14174-S A FB of SAW outside carrying out) and interior SAW astute and able (5, use wlding ISO14343-A S1910+ISO14174-S A FB).After welding was finished, pre-weld seam was fused by submerged arc weld fully.The sizing that eliminates stress then, the hydrostatic test, check wait guarantees that welded joint and steel pipe apparent size reach customer requirements.
In manufacture process, need basic unit, the stretching of anticorrosion layer weld seam, bending, impact property, hardness to product, the adhesive strength of anticorrosion layer and basic unit is advanced and the anti-corrosion capability of multiple layer carries out verification experimental verification, to reach relevant tube line standard and client's technical requirements.
Steel pipe groundwork thickness 9.5~14.3mm of the present utility model, anticorrosion layer thickness is generally 2.5~3.5mm; Can be according to anticorrosion particular requirement and User Agreement adjustment.Use the pipeline of this product, by same service life the Thickness Design than conventional line can reduce greatly, can reach more than 50 years working life.

Claims (1)

1. carry acid medium with vertical masonry joint submerged arc welding composite steel tube for one kind, comprising: steel plate; It is characterized in that: described steel plate is that the base steel layer of GB353116MnDR and anticorrosion layer that material is GB/T423706Cr19Ni10 are composited by material; The joint of described steel plate is by being welded to connect; Described welded structure is inter-engagement place, inboard anticorrosion layer junction point and outside base steel layer junction point; Described inter-engagement place adopts GMAW location joint close, and the welding wire that uses is H08D; Described outside junction point adopts SAW astute and able, and the wlding that uses is ISO14174-S A FB as H08D, model; Described inboard junction point adopts SAW astute and able, and the wlding that uses is ISO14343-A S1910+ISO14174-S A FB.
CN 201320191984 2013-04-16 2013-04-16 Longitudinal submerged arc welding composite steel pipe for conveying acid media Expired - Fee Related CN203215115U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320191984 CN203215115U (en) 2013-04-16 2013-04-16 Longitudinal submerged arc welding composite steel pipe for conveying acid media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320191984 CN203215115U (en) 2013-04-16 2013-04-16 Longitudinal submerged arc welding composite steel pipe for conveying acid media

Publications (1)

Publication Number Publication Date
CN203215115U true CN203215115U (en) 2013-09-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320191984 Expired - Fee Related CN203215115U (en) 2013-04-16 2013-04-16 Longitudinal submerged arc welding composite steel pipe for conveying acid media

Country Status (1)

Country Link
CN (1) CN203215115U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706928A (en) * 2013-12-25 2014-04-09 江苏玉龙钢管股份有限公司 Longitudinal submerged arc welding method of corrosion resistance metallurgical composite bimetal steel tube
WO2017125070A1 (en) * 2016-01-20 2017-07-27 浙江三花智能控制股份有限公司 Pipe body, pipe and method of making pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706928A (en) * 2013-12-25 2014-04-09 江苏玉龙钢管股份有限公司 Longitudinal submerged arc welding method of corrosion resistance metallurgical composite bimetal steel tube
WO2017125070A1 (en) * 2016-01-20 2017-07-27 浙江三花智能控制股份有限公司 Pipe body, pipe and method of making pipe
US10907752B2 (en) 2016-01-20 2021-02-02 Zhejiang Sanhua Intelligent Controls Co., Ltd. Pipe body, pipe and method of making pipe

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130925

Termination date: 20160416