CN109047903A - The cutting method of seamless steel pipe - Google Patents
The cutting method of seamless steel pipe Download PDFInfo
- Publication number
- CN109047903A CN109047903A CN201811207466.3A CN201811207466A CN109047903A CN 109047903 A CN109047903 A CN 109047903A CN 201811207466 A CN201811207466 A CN 201811207466A CN 109047903 A CN109047903 A CN 109047903A
- Authority
- CN
- China
- Prior art keywords
- tubing
- cutting
- cutter device
- steel pipe
- seamless 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
Abstract
The invention discloses a kind of cutting methods of seamless steel pipe, a belt is arranged outside first belt pulley and the second belt pulley, motor link block tightening belt at a distance from motor cabinet is adjusted by tensioning screw, stepper motor rotation drives cutting sheet rotation, it will be on pipe clamping to clamping device, the slightly long size of tubing is stretched out into clamping device when cutting for the first time, moving cutting device moves on to cutting sheet above tubing, telescopic rod, which stretches out, pushes cutting sheet incising pipes, one end of tubing obtains a smooth notch at this time, cutter device is moved forward after step motor stop, tubing leads to material path and avoids column interference from withstanding tubing through column, the Cutting Length of the forward travel distance control tubing of cutter device is adjusted according to scale.The cutter device of the seamless steel pipe, the notch of processing seamless steel pipe that can be more smooth, is suitble to popularity to use.
Description
Technical field
The invention belongs to steel processing technique fields, and in particular to a kind of cutting method of seamless steel pipe.
Background technique
Seamless pipe is to be widely used in each row such as petrochemical industry with hollow section and intermediate non-jointed tubing
Industry.During the processing and manufacturing of seamless pipe, generally requires and seamless pipe is cut into defined size, in the prior art, one
As the cutting of seamless pipe is carried out using the mode of sawing machine or gas welding gas cutting, however structure is complicated for sawing machine, and volume is more huge,
It is generally fixed in workshop, then seamless pipe to be cut is transported on sawing machine and is cut, after the completion of cutting again
It is moved away from.The cutting for so carrying out seamless pipe then needs reciprocal carrying seamless pipe, relatively time consuming laborious, and reduces seamless
The cutting efficiency of pipe.When in addition carrying out the cutting of seamless pipe using the mode of gas welding gas cutting, then there can be the formation such as slag
Burr influences its use so that the end face of seamless pipe is more coarse.
Summary of the invention
The purpose of the present invention is to provide a kind of cutter devices suitable for seamless steel pipe, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of cutter device suitable for seamless steel pipe, packet
Cutter device, guide rail and clamping device are included, the guide rail includes main body, scale and kerve, and main body outer profile rectangle in a strip shape is main
Body upper surface is provided with kerve, and cutter device is put into inside kerve with clamping section sliding block by cutting part sliding block with clamping device and is tightened
Hand the turn of the screw and jackscrew complete the fixation with guide rail, and cutter device includes cutting part sliding block, column, stepper motor and cutting sheet,
Cutting part sliding block is located at cutter device bottom, and the hand the turn of the screw through cutting sliding block, hand the turn of the screw are equipped in the middle part of cutting sliding block
It is column above the cutting sliding block of side, material hole is provided on column, be pole socket on the right side of column, is provided on pole socket through the pole socket right side
The rod aperture at end, it is block in the middle part of mandril that at the top of column, jacking nut is screwed on the top fastening bolt of mandril tail portion mandril, and mandril is logical
It crosses block and jacking nut is fixed at the top of column, push pipe is sheathed on outside mandril, and push pipe outside weldings have chipping, is on the left of chipping
Motor link block, right side are free bearing, and rod set is sheathed on outside telescopic rod, are bar bolt on the left of rod set, and bar bolt passes through rod aperture, thoroughly
The portion of external for crossing rod aperture is screwed with stem nut, and telescopic rod is rotatablely connected by rod set, bar bolt and stem nut and pole socket, telescopic rod
Top and free bearing it is hinged, the motor link block is connect with motor cabinet by slide opening and slide-bar, and stepper motor is fixed on motor
On seat, the first belt pulley is arranged on the output shaft of stepper motor, chipping lower end is provided with hanging hole, and hanging scroll is screwed into inside hanging hole, set
Pipe sleeve is set to outside hanging scroll, is the second belt pulley in front of casing, bolt is equipped with before the second belt pulley, cutting sheet passes through cutting sheet spiral shell
Silk braid, which is set, to be fixed on the bolt in front of the second belt pulley, and clamping device includes fastening part slide clamp main body, and fastening part is sliding
Block, jig main body and outline border are an integral structure, and tankage is provided on jig main body, is provided with counterbore in the middle part of tankage, counterbore base is set
There is the top wire hole through jig main body and fastening part sliding block, jackscrew is provided in top wire hole, is inserted in the outline border upside of two sides
Swivel nut is equipped with pressure bolt in swivel nut, handwheel is welded with above pressure bolt, and fastening part sliding block and cutting part slider bottom are provided with bottom
Mouthful.
Preferably, scale is carved on the body upper surface of the kerve side.
Preferably, tensioning hole is provided in the middle part of the motor link block, tensioning hole side is provided with a pair of of slide opening, and tensioning screw is twisted
Enter to be tensioned inside hole, inside the slide-bar insertion slide opening on motor cabinet, the part that tensioning screw is contacted with motor shaft is equipped with jacking block.
Preferably, it is provided with bearing, bearing and mandril between the push pipe and mandril and push pipe is interference fit.
Preferably, when the jackscrew is screwed into top wire hole and withstands on kerve ground, the top of jackscrew is no more than tankage bottom surface.
Technical effect and advantage of the invention: should be suitable for the cutter device of seamless steel pipe, cutter device and clamping device
Position can be freely adjusted in guide rail, is suitable for the cutting of various different length tubing, and the shape of the tankage of clamping device is in V
Shape, is suitable for the clamping of the tubing of different-diameter, and two groups of pressure bolts can avoid the problem for applying pressure unevenness to tubing, clamping device
And fastening part sliding block of the cutter device in guide rail is identical as cutting part sliding block specification, thus the position of cutter device and clamping device
Setting arbitrarily to exchange, and increase the flexibility ratio used.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is that motor mounting part of the invention divides schematic diagram；
Fig. 3 is cutting sheet installation section schematic diagram of the invention；
Fig. 4 is cutter device left side structure schematic diagram of the invention；
Fig. 5 is cutter device right side structure schematic diagram of the invention；
Fig. 6 is guide rail structure schematic diagram of the invention；
Fig. 7 is clamping device structural schematic diagram of the invention.
In figure: 1 cutter device, 101 first belt pulleys, 102 stepper motors, 103 motor cabinets, 104 slide-bars, 105 tensioning spiral shells
Silk, 106 jacking blocks, 107 cutting sheet screws, 108 cutting sheets, 109 casings, 110 second belt pulleys, 111 hanging scrolls, the connection of 112 motors
Block, 113 tensioning holes, 114 slide openings, 115 hanging holes, 116 columns, 117 hand the turn of the screws, 118 base openings, 119 cutting part sliding blocks, 120 bars
Hole, 121 pole sockets, 122 free bearings, 123 top fastening bolts, 124 jacking nuts, 125 blocks, 126 push pipes, 127 mandrils, 128 chippings, 129 bars
Set, 130 telescopic rods, 131 stem nuts, 132 bar bolts, 133 material holes, 2 guide rails, 201 scales, 202 main bodys, 203 kerves, 3 clamp
Device, 301 jackscrews, 302 counterbores, 303 top wire holes, 304 jig main bodies, 305 handwheels, 306 pressure bolts, 307 swivel nuts, 308 outline borders,
309 tankages, 310 fastening part sliding blocks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of cutter device suitable for seamless steel pipe as shown in figs. 1-7, including cutter device 1,
Guide rail 2 and clamping device 3, the guide rail 2 include main body 202, scale 201 and kerve 203,202 outer profile of main body square in a strip shape
Shape, 202 upper surface of main body are provided with kerve 203, cutter device 1 and clamping device 3 and pass through cutting part sliding block 119 and clamping section sliding block
It is put into the fixation that hand the turn of the screw 117 and jackscrew 301 completion and guide rail 2 are tightened inside kerve 203, cutter device 1 includes cutting part
Sliding block 119, column 116, stepper motor 102 and cutting sheet 108, cutting part sliding block 119 are located at 1 bottom of cutter device, and cutting is slided
It is equipped with the hand the turn of the screw 117 through cutting sliding block in the middle part of block, is column 116 above the cutting sliding block of 117 side of hand the turn of the screw,
It is provided with material hole 133 on column 116, is pole socket 121 on the right side of column 116, is provided with the bar through 121 right end of pole socket on pole socket 121
Hole 120, mandril 127 is through 116 top of column, and jacking nut 124 is screwed on the top fastening bolt 123 of 127 tail portion of mandril, in mandril 127
Portion is block 125, and mandril 127 is fixed on 116 top of column by block 125 and jacking nut 124, and push pipe 126 is sheathed on mandril
Outside 127,126 outside weldings of push pipe have chipping 128, are motor link block 112 on the left of chipping 128, and right side is free bearing 122, bar
Set 129 is sheathed on outside telescopic rod 130, is bar bolt 132 on the left of rod set 129, bar bolt 132 passes through rod aperture 120, through rod aperture
120 portion of external is screwed with stem nut 131, and telescopic rod 130 passes through rod set 129, bar bolt 132 and stem nut 131 and pole socket 121
Rotation connection, the top of telescopic rod 130 and free bearing 122 are hinged, and the motor link block 112 passes through slide opening 114 with motor cabinet 103
It is connected with slide-bar 104, stepper motor 102 is fixed on motor cabinet 103, and the first skin is arranged on the output shaft of stepper motor 102
Belt wheel 101,128 lower end of chipping are provided with hanging hole 115, and hanging scroll 111 is screwed into inside hanging hole 115, and casing 109 is sheathed on outside hanging scroll 111
Portion is the second belt pulley 110 in front of casing 109, bolt is equipped with before the second belt pulley 110, and cutting sheet 108 passes through cutting sheet screw
107 are arranged on the bolt for being fixed on 110 front of the second belt pulley, and clamping device 3 includes 310 jig main body of fastening part sliding block
304, fastening part sliding block 310, jig main body 304 and outline border 308 are an integral structure, and tankage 309 is provided on jig main body 304,
Counterbore 303 is provided in the middle part of tankage 309,303 bottom of counterbore is equipped with the jackscrew through jig main body 304 and fastening part sliding block 310
Hole 303 is provided with jackscrew 301 in top wire hole 303, is inserted with swivel nut 307 in 308 upside of outline border of two sides, is equipped in swivel nut 307
Bolt 306 is pressed, presses and is welded with handwheel 305 above bolt 306, fastening part sliding block 310 and 119 bottom of cutting part sliding block are provided with base opening
118。
Specifically, being carved with scale 201 on 202 upper surface of main body of 203 side of kerve, clamped convenient for adjustment when cutting
The position of device 3.
Specifically, being provided with tensioning hole 113 in the middle part of the motor link block 112, tensioning 113 side of hole is provided with a pair of of slide opening
114, tensioning screw 105 is screwed into inside tensioning hole 113, and the slide-bar 104 on motor cabinet 103 is inserted into inside slide opening 114, tensioning screw
105 parts contacted with motor shaft are equipped with jacking block 106, and slide opening 114 is connect for limiting motor seat 103 along motor with slide-bar 104
The translation state of block 112.
Specifically, being provided with bearing between the push pipe 126 and mandril 127, bearing is with mandril 127 and push pipe 126
Interference fit plays the role of fastening push pipe 126 and mandril 127, while push pipe 126 can rotate outside mandril 127.
Specifically, the jackscrew 301 is screwed into top wire hole 303 when withstanding on 203 ground of kerve, the top of jackscrew 301 is no more than
309 bottom surface of tankage avoids the tubing clamped in jackscrew top to tankage 309.
Specifically, should be suitable for the cutter device of seamless steel pipe, 110 outer cover of the first belt pulley 101 and the second belt pulley
If a belt, motor link block 112 tightening belt, stepper motor at a distance from motor cabinet 103 are adjusted by tensioning screw 105
102 rotations drive cutting sheet 108 to rotate, and by pipe clamping to clamping device 3, stretch out the slightly long size of tubing when cutting for the first time
Clamping device 3, moving cutting device 3 move on to cutting sheet 108 above tubing, and telescopic rod 130, which stretches out, pushes cutting sheet 108 to cut
Tubing, one end of tubing obtains a smooth notch at this time, and stepper motor 102 moves forward cutter device 1 after stalling, and manages
Material lead to material path 133 through column 116 avoid column 116 interference withstand tubing, according to scale adjust cutter device 1 advance away from
Cutting Length from control tubing.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. being arranged a belt outside a kind of cutting method of seamless steel pipe, the first belt pulley and the second belt pulley, pass through tensioning
Screw adjusts motor link block tightening belt at a distance from motor cabinet, and stepper motor rotation drives cutting sheet rotation, tubing is pressed from both sides
It holds on clamping device, the slightly long size of tubing is stretched out into clamping device when cutting for the first time, moving cutting device moves on to cutting sheet
Above tubing, telescopic rod, which stretches out, pushes cutting sheet incising pipes, and one end of tubing obtains a smooth notch, stepping electricity at this time
Cutter device is moved forward after machine stalling, tubing leads to material path and avoids column interference from withstanding tubing through column, according to scale
Adjust the Cutting Length of the forward travel distance control tubing of cutter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207466.3A CN109047903B (en) | 2018-10-17 | 2018-10-17 | Cutting method of seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207466.3A CN109047903B (en) | 2018-10-17 | 2018-10-17 | Cutting method of seamless steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109047903A true CN109047903A (en) | 2018-12-21 |
| CN109047903B CN109047903B (en) | 2019-12-10 |
Family
ID=64764181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811207466.3A Active CN109047903B (en) | 2018-10-17 | 2018-10-17 | Cutting method of seamless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109047903B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418846A (en) * | 2013-06-07 | 2013-12-04 | 常熟市华恩机械有限公司 | Automatic pipe cutting device |
| CN203636061U (en) * | 2013-11-29 | 2014-06-11 | 江苏瀚能电气有限公司 | Synchronous cutting device for MPP pipe |
| CN204135395U (en) * | 2014-10-16 | 2015-02-04 | 詹翔 | A kind of perforating steel pipe equipment |
| CN205733214U (en) * | 2016-05-19 | 2016-11-30 | 南安市智德机械设备有限公司 | A kind of metal pipe material fixed-length cutting device |
| CN106392169A (en) * | 2015-07-31 | 2017-02-15 | 胡惠芳 | Multifunctional pipe cutting device |
| CN206230083U (en) * | 2016-12-07 | 2017-06-09 | 江西金盈新材料科技股份有限公司 | A kind of hydraulic pressure surface trimming machine platform |
| CN206296519U (en) * | 2016-11-25 | 2017-07-04 | 天津市林青合金制品有限公司 | A kind of bicycle production device for cutting pipe |
| CN206702303U (en) * | 2017-03-29 | 2017-12-05 | 天津源泰德润钢管制造集团有限公司 | A kind of tubing spacing cutter device |
| CN107552864A (en) * | 2017-08-31 | 2018-01-09 | 中山市程博工业产品设计有限公司 | A kind of full-automatic cutting equipment |
| CN206883018U (en) * | 2017-04-28 | 2018-01-16 | 浙江嘉泰激光科技股份有限公司 | Laser pipe cutter |
| CN207239432U (en) * | 2017-07-11 | 2018-04-17 | 东莞市力星激光科技有限公司 | A kind of novel integral compact laser pipe cutting machine |
| CN207431497U (en) * | 2017-08-29 | 2018-06-01 | 河南勤工机器人有限公司 | Numerical control cutting equipment |
| CN207668734U (en) * | 2017-12-19 | 2018-07-31 | 深圳市巨匠激光器械有限公司 | A kind of high-precision pipe automatic laser cutter device |
| CN207858254U (en) * | 2017-12-31 | 2018-09-14 | 天津市京通管业有限公司 | A kind of pipe cutting machine with polishing function |
| CN108555748A (en) * | 2018-04-11 | 2018-09-21 | 胡亚勇 | A kind of adjustable pipe fitting cutter device of diameter and its cutting method |
| CN207971489U (en) * | 2018-03-15 | 2018-10-16 | 常州西与子精密机械有限公司 | A kind of online pipe cutting machine |
-
2018
- 2018-10-17 CN CN201811207466.3A patent/CN109047903B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418846A (en) * | 2013-06-07 | 2013-12-04 | 常熟市华恩机械有限公司 | Automatic pipe cutting device |
| CN203636061U (en) * | 2013-11-29 | 2014-06-11 | 江苏瀚能电气有限公司 | Synchronous cutting device for MPP pipe |
| CN204135395U (en) * | 2014-10-16 | 2015-02-04 | 詹翔 | A kind of perforating steel pipe equipment |
| CN106392169A (en) * | 2015-07-31 | 2017-02-15 | 胡惠芳 | Multifunctional pipe cutting device |
| CN205733214U (en) * | 2016-05-19 | 2016-11-30 | 南安市智德机械设备有限公司 | A kind of metal pipe material fixed-length cutting device |
| CN206296519U (en) * | 2016-11-25 | 2017-07-04 | 天津市林青合金制品有限公司 | A kind of bicycle production device for cutting pipe |
| CN206230083U (en) * | 2016-12-07 | 2017-06-09 | 江西金盈新材料科技股份有限公司 | A kind of hydraulic pressure surface trimming machine platform |
| CN206702303U (en) * | 2017-03-29 | 2017-12-05 | 天津源泰德润钢管制造集团有限公司 | A kind of tubing spacing cutter device |
| CN206883018U (en) * | 2017-04-28 | 2018-01-16 | 浙江嘉泰激光科技股份有限公司 | Laser pipe cutter |
| CN207239432U (en) * | 2017-07-11 | 2018-04-17 | 东莞市力星激光科技有限公司 | A kind of novel integral compact laser pipe cutting machine |
| CN207431497U (en) * | 2017-08-29 | 2018-06-01 | 河南勤工机器人有限公司 | Numerical control cutting equipment |
| CN107552864A (en) * | 2017-08-31 | 2018-01-09 | 中山市程博工业产品设计有限公司 | A kind of full-automatic cutting equipment |
| CN207668734U (en) * | 2017-12-19 | 2018-07-31 | 深圳市巨匠激光器械有限公司 | A kind of high-precision pipe automatic laser cutter device |
| CN207858254U (en) * | 2017-12-31 | 2018-09-14 | 天津市京通管业有限公司 | A kind of pipe cutting machine with polishing function |
| CN207971489U (en) * | 2018-03-15 | 2018-10-16 | 常州西与子精密机械有限公司 | A kind of online pipe cutting machine |
| CN108555748A (en) * | 2018-04-11 | 2018-09-21 | 胡亚勇 | A kind of adjustable pipe fitting cutter device of diameter and its cutting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109047903B (en) | 2019-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206105206U (en) | Welding set for radiator | |
| CN208854049U (en) | A kind of aluminium door and window adjustment fixed mechanism | |
| CN208945278U (en) | A kind of cutter device of seamless steel pipe | |
| CN217084518U (en) | Steel pipe bending resistance detection device for building construction | |
| CN109128349A (en) | A kind of cutter device of seamless steel pipe | |
| CN208840598U (en) | The motor link block of seamless steel pipe cutter device | |
| CN107150081A (en) | A kind of positioning punching device processed for aluminium section die | |
| CN109047903A (en) | The cutting method of seamless steel pipe | |
| CN108723469A (en) | A kind of metal tube production and processing cutter device | |
| CN206048314U (en) | A kind of pipe cutting machine suitable for different-diameter | |
| CN210789801U (en) | Welding device for assembling automobile parts | |
| CN209189331U (en) | A kind of arrester glue cleaning machine | |
| CN111283257A (en) | Cutting equipment capable of meeting requirements for processing sectional materials with different section structures | |
| CN105598315A (en) | Square rebar frame bending machine | |
| CN213196620U (en) | Pneumatic fixture for tail gate machining on assembly production line | |
| CN212496027U (en) | Cutting equipment is used in reducer pipe fitting production | |
| CN105537300B (en) | A kind of automatic wiredrawing device for copper rod | |
| CN112276401B (en) | Adjusting mechanism for welding clamping fixture | |
| CN108161121A (en) | A kind of glass frame cutting-off device for sectional material | |
| CN209831768U (en) | Circular tube cutting equipment | |
| CN108406188B (en) | A kind of sewing machine base bracket special welding machine | |
| CN207655805U (en) | A kind of copper wire cutting equipment with propulsion functions | |
| CN207494396U (en) | Expanding rod regulating mechanism and with its electric tube expander | |
| CN210676470U (en) | Bending machine with limiting device | |
| CN220145418U (en) | Groove cutting device for metal pipe fitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 362300 Liantang section of Nantong highway, Ximei street, Nan'an City, Quanzhou City, Fujian Province Patentee after: Fujian Gesheng Stainless Steel Pipe Co.,Ltd. Address before: 362300 Liantang section of Nantong highway, Ximei street, Nan'an City, Quanzhou City, Fujian Province Patentee before: FUJIAN GESHENG STAINLESS STEEL WATER PIPE Co.,Ltd. |