Longitudinally Welded Steel Pipes

You can rest assured to buy customized Pengfa Longitudinally Welded Steel Pipes from us. we have many years of production experience, so my quality is far ahead of the industry, but we still strive to improve the quality and improve the delivery time to ensure our customers will receive the highest quality products.

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Product Description

The geometrical characteristics of the straight seam steel pipe section are good, the pipe wall is generally thin, the section material is distributed around the center of mass, the section rotation radius is large, and the torsional stiffness is large. As compression, bending and bidirectional bending members, the bearing capacity is high, and the flatness and cross section dimensions of the cold-formed pipe are more accurate than the cross section of the hot-rolled opening.

As the professional manufacture, we would like to provide you Pengfa Longitudinally Welded Steel Pipes. Straight steel pipe English (Straightsteel pipe), general welded pipe: general welded pipe is used to transport low-pressure fluid. Made of Q195, Q215A, Q235A steel, Q235B plain carbon. It can also be manufactured together with easy-to-weld 0317 standard model 6012 and steel mother 755 mild steel. Steel pipes are subject to water pressure, bending, flattening and other tests, and have certain requirements for surface quality. Usually, the delivery length is 4-10m, and it is often required to deliver in fixed length (or double length).

The specification of the Longitudinally Welded Steel Pipes is indicated by the nominal diameter (mm or inch). The nominal diameter is different from the actual one. The welded pipe has two types of ordinary steel pipe and thickened steel pipe according to the specified wall thickness. The welding process of submerged arc welding straight seam steel pipe is submerged arc welding technology, which uses filler welding and particle protection flux submerged arc. The diameter of production can reach 1500mm. LSAW is the English abbreviation of submerged arc welding straight seam steel pipe. The production technology of submerged arc welding straight seam steel pipe includes JCOE forming technology and rolling forming submerged arc welding technology.

When the diameter is large, two steel plates may be used for rolling, which will form a phenomenon of double welds. Standards that can be implemented are GB/T3091-2008 low-pressure fluid steel pipe production standards, GB/T9711.1-2-1997 oil and gas steel pipe production and use standards, and American Longitudinally Welded Steel Pipes execution standards. Production material: Q195A-Q345E; 245R; Q345QA-D; L245-L485; X42-X70. The pressure parameters mainly include 2ST/T, S is the yield strength, and T is the wall thickness. Submerged arc welding has been developed into two-wire submerged arc welding and multi-wire submerged arc welding, and the efficiency is further improved.

Product Parameter (Specification)

Cold Drawn		Lu Li		12m5130	Lu Li		12m5030	Tobacco Big Seamless		Giant Energy Expansion 7 mm
14*2-3	12000	57*3. 5		12m5130	140*4		12m5030	325*6.5	5500	Giant Energy Expansion 7 mm
16*2-4	8600	60*3.5		5000	140*5		4850	325*7 Big Seamless	5260	377	5150
18*2-4	8300	76*3. 5		4880	140*6		4630	325712	5450	426	5150
21*2-4	6900	76*4		4800	140*10		4630	325*9		8 mm
22*2-4	6900	89*4		4800	159*4.5		4880	325*10		377	4850
25*2-5	6300	108*4		4800	159*5		4660	356*8	5300	406	4850
27*2-4	6300	76*4. 5		4690	159*6		4630	356*8.5	5300	426	4850
27*5-6	6300	89*4.5		4690	159*7		4630	356*9	5300	457	5000
32*2.5	5800	108*4. 5		4690	159*8		4630	377*8Baotou Steel	5450	480-530	5000
32*3	5250	73*5		4630	168*5		4750	377*8Tobacco		610-630	5200
32*3. 5-4	5250	76*5		4630	168*6		4580	377*9 Tobacco		9 mm
32*4.5	5250	89*5		4630	168*6.7		4580	377*9.5	5280	426-457	4800
34*3	5250	89*5.2		4630	168*7		4580	377*10	5280	480-530	4800
34*3. 5-4	5250	108*5		4630	219*6		4750	377*12	5300	610-630	4800
34*5-6	5250	76*6		4600	219*6.5		4760	406*9.5	5300	720	5100
38*3-4	5200	89*6		4600	219*7		4560	406*10	5300	820	5200
38*5-6	5200	108*6		4600	219*7.8		4560	426*8	5400	10mm
Hot Rolled		114*4		4900	219*8		4560	426*9	5400	377*10	4750
42*3	4950	114*4. 5		4750	219*10			426*9.5	5300	426*10	4750
42*3. 5-4	4800	114*5		4630	273*6.5		4980	426*10	5300	480*10	4750
42*5-6	4800	114*5.7		4630	273*7		4760	457*9		508*10	4750
45*3	4900	114*6		4600	273*8		4750	457*20		530*10	4750
45*3. 5-4	4800	114*8		4600	273*8.5		4560	Ju Neng Mo Long		610*10	4850
45*5-6	4800	133*4		5000	273*9		4560	325*8		630*10	4850
48*3	4850	133*4. 5		4730	273*10		4560	325*9		720*10	5050
48*3. 5-4	4750	133*5		4660	325*8		4730	325*10	4580	820*10	5150
48*5-6	4750	133*6		4630	325*8.5		4640	325*11	4530	11mm or more
57*3	4950	133*4Big Seamless	5300		325*9		4610	325*12	4530	480	4750
57*3. 5	4700	27*2.7-3	6m	6800	325*10		4580	325*13	4530	508	4750
57*4	4700	32*3-4	6m	5550				325*14	4530	530	4750
57*5-6	4700	34*3.5	6m	5550	Shandong			325*15	4530	610	4850
60*3	4800	42*5	6m					325*16	4530	630	4850
60*3.5	4700	48*3. 5	6m	5000	194*6	5000				720	5050
60*4	4700	57*3. 5	6m	4950	219*6		4750			820	5150
60*5-6	4700	57*4	6m	4950
6m fixed length130 Middle disconnect100 Stock small tube 6m fixed length*300

Product Feature And Application

According to the production process, Longitudinally Welded Steel Pipes can be divided into high frequency straight seam steel pipes and submerged arc welded straight seam steel pipes. Straight seam steel pipes are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction.

Used for liquid transportation: water supply and drainage.

For gas transportation: gas, steam, liquefied petroleum gas.

For structural purposes: as piling pipes, as bridges; pipes for wharves, roads, building structures, etc.