CN102000716A - Production line of major diameter straight welded pipe - Google Patents
Production line of major diameter straight welded pipe Download PDFInfo
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- CN102000716A CN102000716A CN2010105711783A CN201010571178A CN102000716A CN 102000716 A CN102000716 A CN 102000716A CN 2010105711783 A CN2010105711783 A CN 2010105711783A CN 201010571178 A CN201010571178 A CN 201010571178A CN 102000716 A CN102000716 A CN 102000716A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 66
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 238000003801 milling Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000004513 sizing Methods 0.000 claims abstract description 14
- 238000010008 shearing Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000000137 annealing Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000010409 ironing Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010924 continuous production Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000003860 storage Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention belongs to the production device of a major diameter straight welded pipe, particularly relating to a production line of a major diameter straight welded pipe for producing a welded steel pipe in which the caliber is greater than phi 630mm; the production line is characterized in that the production line of a major diameter straight welded pipe is arranged according to the manufacturing process of the major diameter straight welded pipe; the production line of a major diameter straight welded pipe comprises a storage platform, a charging trolley, an uncoiler, a leveler, a shearing butt welding machine, a movable sleeve, an edge milling machine, a steel plate diagnostic machine, a lifting platform, a steel pipe shaping machine set, a welding device, a pulling device, a heat treatment device, a cooling device, a sizing plate type rigid rolling machine, a length cutter and an emptying rack; the production device has reasonable arrangement in process; an advanced processing machine is preferably selected in each process, which can manufacture the major diameter straight welded pipe continuously without requiring overweight jigs; and the production line has the advantages of reliability in operation, high production efficiency, stable product quality, low manufacturing cost, safety in operation and convenience in use.
Description
Technical field
The invention belongs to the process units of making big footpath ERW, particularly manufacture a kind of big footpath ERW production line of caliber greater than the welded still pipe of ∮ 630mm.
Background technology
At present, along with advancing of science and technology, all trades and professions increase day by day to the transfer pipeline product in the mechanical industry; In the oil exploitation industry, need a large amount of big caliber and high performance carrier pipe; Particularly caliber is greater than the carrier pipe of ∮ 630mm.Current steel pipe's production both domestic and external factory only can manufacture the carrier pipe less than ∮ 630mm.And in the carrier pipe of manufacturing less than ∮ 630mm, all adopt single manufacture method; Adopt the FFX method of forming as some external steel pipe's production factories---be the flexible formation method; Also have some common row's roll-type forming units that adopt of steel pipe's production factory both domestic and external.So, above-mentioned each the single manufacture method of attempt employing is manufactured the carrier pipe greater than ∮ 630mm, become of steel pipe's production both domestic and external factory to be difficult to the problem that solves, as making big footpath ERW with row's roll-type forming unit, it is to be covered with format roll on the forming face of work piece, though the molding effect of steel pipe is cut with scissors, and ton surplus the weight of its one of them outer roller just needs ten, so big frock was both difficult makes, presses and adorn, and investment is big again; Both production efficiency was low, again the welding tube quality instability; Therefore let alone manufacture production line greater than the welded pipe of ∮ 630mm especially current steel pipe's production both domestic and external factory can not manufacture welded pipe greater than ∮ 630mm with above-mentioned any single manufacture method.Therefore, at the problem of above-mentioned existence, it is very necessary researching and developing a kind of big footpath ERW production line of manufacturing greater than the welded still pipe of ∮ 630mm.
Summary of the invention
The present invention is intended to the shortcoming and defect part that exists in above-mentioned technology, procedure arrangement is reasonable and provide not only, and preferred advanced processing equipment in each operation, can make the ERW in big footpath continuously, not need overweight frock again, and have reliable, the production efficiency height, constant product quality, low cost of manufacture, handling safety and a kind of very easily big footpath of use ERW production line.
The objective of the invention is to adopt following technical scheme to realize: described big footpath ERW production line is characterized in that: by the big footpath of ERW technological process of production installing, big footpath ERW production line; Described big footpath ERW production line mainly is made up of storing platform, feeding cart, uncoiler, level(l)ing machine, Shearing Butt Resistance Welder, kink, edge milling machines, steel plate inspection machine, lifting platform, steel tube shaping machine group, welder, pull unit, annealing device, cooling device, the board-like rigidity milling train of sizing, fixed ruler cutting machine and blanking stand; The work piece that is stored in a plurality of band coil of strip shapes of storing platform is transported on the uncoiler by feeding cart, pinch mechanism by level(l)ing machine is sent the work piece of the band steel shape decontroled on the uncoiler into level(l)ing machine and is carried out leveling, with the work piece of the forward and backward band steel shape behind the leveling by Shearing Butt Resistance Welder integrally welded, for the work piece of the slab shape of continuous production usefulness; By the pinch mechanism of kink the work piece of slab shape is rolled up subsequently and be stored on the kink, the work piece of the slab shape on the kink is sent into edge milling machines through the outlet of kink, edge milling machines just mills limit and milling bevel for welding and the flaw detection of steel plate inspection machine according to the width of plate slab of the needs of the circumference of work piece-promptly to the work piece of slab shape, the work piece of the finished product slab shape with steel plate inspection machine flaw detection after qualified is sent into the steel tube shaping machine group through lifting platform, the work piece of the steel tubular behind the steel tube shaping machine composing type is sent into welder work piece is imposed the vertical masonry joint welding, ironing and seam inspection inspection, install pull unit in the unit of the production line production line behind welder, the work piece that this pull unit of mat drives steel tubular moves forward, and the work piece of the welded tube shape after the seam inspection passed examination sent into annealing device in regular turn, in the cooling device, be transported in the board-like rigidity milling train of sizing through the work piece of cooled welded tube shape and carry out the size sizing by the requirement of product standard regulation, the work piece of the finished product shape with sizing after qualified sends into by the welded tube length of customer requirements that to send on the blanking stand warehouse-in after the fixed ruler cutting machine cuts off standby.
Described lifting platform is the height-adjustable lifting platform that drives by screw elevator.
Described steel tube shaping machine group is made up of the curved joggling machine of sky, row-roll forming process machine and board-like rigidity milling train in regular turn; Wherein said board-like rigidity milling train by Rack Body, go up horizontal roller mechanism, go up the horizontal roller governor motion, slide, supporting plate, hydraulic cylinder, down horizontal roller mechanism, horizontal roller governor motion, edge-on roller mechanism and edge-on roller governor motion are formed down.
Described welder is made up of bonding machine, ironing machine and seam inspection machine in regular turn.
Described cooling device is made up of air cooling roller-way and water-cooled roller-way in regular turn.
Because being the technological process of production according to ERW, the present invention begins to the tinuous production that finally the big footpath welded tube finished product that meets customer requirements is transported to the streamlined formula on the blanking stand operation from the raw material operation.In fact, this tinuous production mainly according to the different process of work piece in regular turn by the tinuous production of the work piece of the work piece of the work piece of the work piece of the work piece of the work piece of forward and backward band steel shape, slab shape, finished product slab shape, steel tubular, welded tube shape and finished product shape.In order to realize the tinuous production of this one continuous line formula, at first the work piece with the forward and backward band steel shape behind the leveling passes through Shearing Butt Resistance Welder work piece integrally welded in rapid succession, that supply the slab shape of continuous production usefulness, makes the raw material supply operation guarantee the most important condition of tinuous production.Adopted the steel tube shaping machine group that is combined into by the curved joggling machine of sky, row-roll forming process machine and board-like rigidity milling train in this external steel pipe molding procedure.Why adopt the steel tube shaping machine group that is combined into by the curved joggling machine of sky, row-roll forming process machine and board-like rigidity milling train, this is because the rule of steel pipe forming process progressively is shaped to " U " shape cross section from work piece " " shape cross section by make-up machine usually, makes work piece carry out the transition to the characteristic of " O " cross section of remaining silent from " U " shape cross section moulding of opening at last.Therefore, the present invention by research and analyse the steel pipe forming process characteristic the molding procedure of the welded tube make-up machine of straight seam group be made up of the curved joggling machine of sky, row-roll forming process machine and board-like rigidity milling train has been proposed in regular turn.Also just reasonably in different formative stages, adopt the make-up machine that adapts with the steel pipe shaping characteristic according to the steel pipe shaping characteristic.The present invention is at " one " shape cross section of work piece---the curved joggling machine of sky that has adopted a plurality of crimp mechanism to form in the formative stage of " U " shape cross section; Outer roller arrangement and interior roller row-roll forming process machine combination, open type formed by outer roller arrangement, interior roller, depress roller device, following driven roller, crossbeam, support, base and snub pulley in " U " shape cross section, have been adopted in the formative stage; And the board-like rigidity milling train that in " O " cross section formative stage of remaining silent, has adopted the board-like rigid mounting more than three to form, its each board-like rigid mounting by Rack Body, go up horizontal roller mechanism, go up the horizontal roller governor motion, slide, supporting plate, hydraulic cylinder, down horizontal roller mechanism, horizontal roller governor motion, edge-on roller mechanism and edge-on roller governor motion are formed down.Therefore, make welded still pipe in forming process, realize molding effect preferably; Thereby satisfy market demand with regard to having realized the welded still pipe of manufacturing greater than ∮ 630mm by the present invention.Based on this because of, so with called after of the present invention " big footpath ERW production line "; In order to ensure stable and reliable operation of the present invention, the pull unit that the work piece of installing driving steel tubular moves forward in the living line line unit after the welder operation.
Combine the above technical scheme of being taked, realize purpose of the present invention.
Compared with prior art, the present invention not only procedure arrangement is reasonable, and preferred advanced processing equipment in each operation, can make the ERW in big footpath continuously, not need overweight frock again, and have reliable, the production efficiency height, constant product quality, low cost of manufacture, handling safety and use advantages such as very convenient.
Description of drawings
The present invention has four width of cloth accompanying drawings.Wherein:
Accompanying drawing 1 is the horizontal layout schematic diagram of processing machine in each operations of specific embodiments of the invention;
Accompanying drawing 2 is the A place enlarged diagrams among Fig. 1;
Accompanying drawing 3 is the B place enlarged diagrams among Fig. 1;
Accompanying drawing 4 is the C place enlarged diagrams among Fig. 1.
Among the figure: 1, storing platform, 2, feeding cart, 3, uncoiler, 4, level(l)ing machine, 5, Shearing Butt Resistance Welder, 6, kink, 7, edge milling machines, 8, the steel plate inspection machine, 9, lifting platform, 10, steel tube shaping machine group, 11, welder, 12, pull unit, 13, annealing device, 14, cooling device, 15, the board-like rigidity milling train of sizing, 16, fixed ruler cutting machine, 17, blanking stand, 18, empty curved joggling machine, 19, the row-roll forming process machine, 20, board-like rigidity milling train, 21, bonding machine, 22, ironing machine, 23, the seam inspection machine, 24, air cooling roller-way, 25, the water-cooled roller-way.
The specific embodiment by
Be specific embodiments of the invention shown in Fig. 1,2,3,4, it is a big footpath ERW production line of making ∮ 711mm, it is characterized in that: by the big footpath of ERW technological process of production installing, big footpath ERW production line; Described big footpath ERW production line mainly is made up of storing platform 1, feeding cart 2, uncoiler 3, level(l)ing machine 4, Shearing Butt Resistance Welder 5, kink 6, edge milling machines 7, steel plate inspection machine 8, lifting platform 9, steel tube shaping machine group 10, welder 11, pull unit 12, annealing device 13, cooling device 14, the board-like rigidity milling train 15 of sizing, fixed ruler cutting machine 16 and blanking stand 17; The work piece that is stored in a plurality of band coil of strip shapes of storing platform 1 is transported on the uncoiler 3 by feeding cart 2, by the pinch mechanism of level(l)ing machine 4 work piece of the band steel shape of relieving on the uncoiler 3 is sent into level(l)ing machine 4 and carry out leveling, the work piece of the forward and backward band steel shape behind the leveling is passed through the work pieces of Shearing Butt Resistance Welder 5 slab shapes integrally welded, the continuous production usefulness of confession; By the pinch mechanism of kink 6 work piece of slab shape is rolled up subsequently and be stored on the kink 6, the work piece of the slab shape on the kink 6 is sent into edge milling machines 7 through the outlet of kink 6, edge milling machines 7 just mills limit and milling bevel for welding and the flaw detection of steel plate inspection machine according to the width of plate slab of the needs of the circumference of work piece-promptly to the work piece of slab shape, the work piece of the finished product slab shape with steel plate inspection machine 8 flaw detection after qualified is sent into the steel tube shaping machine group through lifting platform 9, the work piece of the steel tubular after 10 moulding of steel tube shaping machine group is sent into 11 pairs of work pieces of welder and is imposed the vertical masonry joint welding, ironing and seam inspection inspection, installing pull unit 12 in the unit of the production line production line behind welder 10, the work piece that this pull unit 12 of mat drives steel tubular moves forward, and the work piece of the welded tube shape after the seam inspection passed examination sent into annealing device 13 in regular turn, in the cooling device 14, be transported in the board-like rigidity milling train 15 of sizing through the work piece of cooled welded tube shape and carry out the size sizing by the requirement of product standard regulation, the work piece of the finished product shape with sizing after qualified sends into by the welded tube length of customer requirements that to send on the blanking stand 17 warehouse-in after fixed ruler cutting machine 16 cuts off standby.
Described lifting platform 9 is the height-adjustable lifting platforms that drive by screw elevator.
Described steel tube shaping machine group 10 (as shown in Figure 2) is made up of the curved joggling machine 18 of sky, row-roll forming process machine 19 and board-like rigidity milling train 20 in regular turn; The a plurality of crimp of curved joggling machine 18 employings of wherein said sky mechanism forms; Described outer roller arrangement and interior roller row-roll forming process machine combination, open type is made up of outer roller arrangement, interior roller, depress roller device, following driven roller, crossbeam, support, base and snub pulley; Described board-like rigidity milling train by Rack Body, go up horizontal roller mechanism, go up the horizontal roller governor motion, slide, supporting plate, hydraulic cylinder, down horizontal roller mechanism, horizontal roller governor motion, edge-on roller mechanism and edge-on roller governor motion are formed down; Described board-like rigidity milling train has adopted the board-like rigid mounting more than three to form, its each board-like rigid mounting by Rack Body, go up horizontal roller mechanism, go up the horizontal roller governor motion, slide, supporting plate, hydraulic cylinder, down horizontal roller mechanism, horizontal roller governor motion, edge-on roller mechanism and edge-on roller governor motion are formed down.
Described welder (as shown in Figure 3) is made up of bonding machine 21, ironing machine 22 and seam inspection machine 23 in regular turn.
Described cooling device (as shown in Figure 4) is made up of air cooling roller-way 24 and water-cooled roller-way 25 in regular turn.
The above; it only is the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; all are familiar with those skilled in the art in technical scope disclosed by the invention, are equal to replacement or change and all should be encompassed within protection scope of the present invention according to technical scheme of the present invention and design of the present invention thereof.
Claims (6)
1. one kind big footpath ERW production line is characterized in that: by the big footpath of ERW technological process of production installing, big footpath ERW production line; Described big footpath ERW production line mainly is made up of storing platform (1), feeding cart (2), uncoiler (3), level(l)ing machine (4), Shearing Butt Resistance Welder (5), kink (6), edge milling machines (7), steel plate inspection machine (8), lifting platform (9), steel tube shaping machine group (10), welder (11), pull unit (12), annealing device (13), cooling device (14), the board-like rigidity milling train of sizing (15), fixed ruler cutting machine (16) and blanking stand (17); The work piece that will be stored in a plurality of band coil of strip shapes of storing platform (1) is transported on the uncoiler (3) by feeding cart (2), by the pinch mechanism of level(l)ing machine (4) work piece of the last band steel shape of decontroling of uncoiler (3) is sent into level(l)ing machine (4) and carry out leveling, the work piece of the forward and backward band steel shape behind the leveling is passed through the work piece of Shearing Butt Resistance Welder (5) slab shape integrally welded, the continuous production usefulness of confession; By the pinch mechanism of kink (6) work piece of slab shape is rolled up subsequently and be stored on the kink (6), the work piece of the slab shape on the kink (6) is sent into edge milling machines (7) through the outlet of kink (6), edge milling machines (7) just mills limit and milling bevel for welding and steel plate inspection machine (8) flaw detection according to the width of plate slab of the needs of the circumference of work piece-promptly to the work piece of slab shape, the work piece of the finished product slab shape with steel plate inspection machine (8) flaw detection after qualified is sent into steel tube shaping machine group (10) through lifting platform (9), the work piece of the steel tubular behind the steel tube shaping machine composing type is sent into welder (12) work piece is imposed the vertical masonry joint welding, ironing and seam inspection inspection, install pull unit (11) in the unit of the production line behind welder (12), the work piece that this pull unit of mat (11) drives steel tubular moves forward, and the work piece of the welded tube shape after the seam inspection passed examination sent into annealing device (13) in regular turn, in the cooling device (14), be transported in the board-like rigidity milling train of sizing (15) through the work piece of cooled welded tube shape and carry out the size sizing by the requirement of product standard regulation, the work piece of the finished product shape with sizing after qualified is sent into by the welded tube length of customer requirements and is sent into blanking stand (17) after fixed ruler cutting machine (16) cuts off to go up warehouse-in standby.
2. by the described big footpath of claim 1 ERW production line, it is characterized in that: described lifting platform (9) is the height-adjustable lifting platform (9) that drives by screw elevator.
3. by the described big footpath of claim 1 ERW production line, it is characterized in that: described steel tube shaping machine group (10) is made up of the curved joggling machine (18) of sky, row-roll forming process machine (19) and board-like rigidity milling train (20) in regular turn.
4. by the described big footpath of claim 1 ERW production line, it is characterized in that: described welder (11) is made up of bonding machine (21), ironing machine (22) and seam inspection machine (23) in regular turn.
5. by the described big footpath of claim 1 ERW production line, it is characterized in that: described pull unit (12) is made up of motor, reduction gearing mechanism.
6. by the described big footpath of claim 1 ERW production line, it is characterized in that: described cooling device (13) is made up of air cooling roller-way (24) and water-cooled roller-way (25) in regular turn.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571178 CN102000716B (en) | 2010-11-30 | 2010-11-30 | Production line of major diameter straight welded pipe |
| DE112011103968.9T DE112011103968B4 (en) | 2010-11-30 | 2011-03-23 | Production line for a longitudinally welded tube with a large diameter |
| PCT/CN2011/072062 WO2012071836A1 (en) | 2010-11-30 | 2011-03-23 | Production line of large diameter straight seam welded pipe |
| RU2013129913/02A RU2563394C2 (en) | 2010-11-30 | 2011-03-23 | Line for production of longitudinal weld large-diameter tubes |
| US13/989,228 US9266161B2 (en) | 2010-11-30 | 2011-03-23 | Production line of large diameter longitudinal welded pipe |
| JP2013541183A JP5723020B2 (en) | 2010-11-30 | 2011-03-23 | Large diameter straight seam welded pipe production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571178 CN102000716B (en) | 2010-11-30 | 2010-11-30 | Production line of major diameter straight welded pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102000716A true CN102000716A (en) | 2011-04-06 |
| CN102000716B CN102000716B (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010571178 Expired - Fee Related CN102000716B (en) | 2010-11-30 | 2010-11-30 | Production line of major diameter straight welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102000716B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303229A (en) * | 2011-08-02 | 2012-01-04 | 太原华科信冶金成套设备有限公司 | Continuous feeding method and device |
| CN102328206A (en) * | 2011-08-17 | 2012-01-25 | 高宇笙 | All-in-one machine capable of automatically guiding materials, shearing and butting |
| CN103394546A (en) * | 2013-08-21 | 2013-11-20 | 武汉钢铁(集团)公司 | Production method for longitudinal welded pipe |
| CN103801583A (en) * | 2014-02-13 | 2014-05-21 | 风范绿色建筑（常熟）有限公司 | Machining technique for high-specification directly formed square rectangular pipe |
| CN103934639A (en) * | 2014-04-19 | 2014-07-23 | 长春市矩型焊管有限责任公司 | Thin wall cold roll forming process |
| CN104625645A (en) * | 2015-01-13 | 2015-05-20 | 邴绍翠 | Machining method for thin-wall squared tube |
| CN104875022A (en) * | 2015-04-28 | 2015-09-02 | 上海福滔金属制造有限公司 | Steel-plastic composite barrel steel structure outer package equipment production line and steel-plastic composite barrel steel structure outer package equipment production method |
| CN105127236A (en) * | 2015-08-18 | 2015-12-09 | 马鞍山市华科实业有限公司 | Manufacturing method for special-shaped steel pipes special for logistics shelves |
| CN106180307A (en) * | 2016-08-31 | 2016-12-07 | 江苏省南扬机械制造有限公司 | Flexible roll bending formation production line |
| CN106239168A (en) * | 2016-08-01 | 2016-12-21 | 葫芦岛市钢管工业有限公司 | A kind of pre-soldering method of the ERW for LSAW steel pipe's production |
| CN106541253A (en) * | 2017-01-18 | 2017-03-29 | 浙江鑫桦钢管有限公司 | A kind of production technology of steel pipe |
| CN112917173A (en) * | 2021-02-03 | 2021-06-08 | 青岛沃明钢管有限公司 | Production line of high-frequency straight welded pipe |
| CN113084459A (en) * | 2021-04-13 | 2021-07-09 | 中钢不锈钢管业科技山西有限公司 | Continuous intelligent forming process for stainless steel straight welded pipe |
| CN113695841A (en) * | 2021-07-08 | 2021-11-26 | 江苏武进不锈股份有限公司 | Method for manufacturing composite welding austenitic stainless steel pipe for fluid transportation |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303229B (en) * | 2011-08-02 | 2014-09-24 | 太原华科信冶金成套设备有限公司 | Continuous feeding method and device |
| CN102303229A (en) * | 2011-08-02 | 2012-01-04 | 太原华科信冶金成套设备有限公司 | Continuous feeding method and device |
| CN102328206A (en) * | 2011-08-17 | 2012-01-25 | 高宇笙 | All-in-one machine capable of automatically guiding materials, shearing and butting |
| CN102328206B (en) * | 2011-08-17 | 2013-06-12 | 高宇笙 | All-in-one machine capable of automatically guiding materials, shearing and butting |
| CN103394546A (en) * | 2013-08-21 | 2013-11-20 | 武汉钢铁(集团)公司 | Production method for longitudinal welded pipe |
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| CN103801583A (en) * | 2014-02-13 | 2014-05-21 | 风范绿色建筑（常熟）有限公司 | Machining technique for high-specification directly formed square rectangular pipe |
| CN103801583B (en) * | 2014-02-13 | 2016-04-13 | 风范绿色建筑（常熟）有限公司 | Large gauge directly becomes square tube processing technology |
| CN103934639A (en) * | 2014-04-19 | 2014-07-23 | 长春市矩型焊管有限责任公司 | Thin wall cold roll forming process |
| CN103934639B (en) * | 2014-04-19 | 2016-07-06 | 长春市矩型焊管有限责任公司 | A kind of thin-walled cold-bending molding technology |
| CN104625645A (en) * | 2015-01-13 | 2015-05-20 | 邴绍翠 | Machining method for thin-wall squared tube |
| CN104875022A (en) * | 2015-04-28 | 2015-09-02 | 上海福滔金属制造有限公司 | Steel-plastic composite barrel steel structure outer package equipment production line and steel-plastic composite barrel steel structure outer package equipment production method |
| CN104875022B (en) * | 2015-04-28 | 2017-06-13 | 上海福滔金属制造有限公司 | Steel plastic compount bucket steel construction outer packing equipment production line and its production method |
| CN105127236A (en) * | 2015-08-18 | 2015-12-09 | 马鞍山市华科实业有限公司 | Manufacturing method for special-shaped steel pipes special for logistics shelves |
| CN106239168A (en) * | 2016-08-01 | 2016-12-21 | 葫芦岛市钢管工业有限公司 | A kind of pre-soldering method of the ERW for LSAW steel pipe's production |
| CN106180307A (en) * | 2016-08-31 | 2016-12-07 | 江苏省南扬机械制造有限公司 | Flexible roll bending formation production line |
| CN106541253A (en) * | 2017-01-18 | 2017-03-29 | 浙江鑫桦钢管有限公司 | A kind of production technology of steel pipe |
| CN112917173A (en) * | 2021-02-03 | 2021-06-08 | 青岛沃明钢管有限公司 | Production line of high-frequency straight welded pipe |
| CN112917173B (en) * | 2021-02-03 | 2022-02-01 | 青岛沃明钢管有限公司 | Production line of high-frequency straight welded pipe |
| CN113084459A (en) * | 2021-04-13 | 2021-07-09 | 中钢不锈钢管业科技山西有限公司 | Continuous intelligent forming process for stainless steel straight welded pipe |
| CN113695841A (en) * | 2021-07-08 | 2021-11-26 | 江苏武进不锈股份有限公司 | Method for manufacturing composite welding austenitic stainless steel pipe for fluid transportation |
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