ERW Steel Pipe

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Product Description

We can produce and supply seamless steel pipes and welded steel pipes of various specifications and materials, and welded steel tubes include SSAW Steel Pipe, LSAW Steel Pipe and ERW Steel Pipe, etc.

“ERW steel pipe” is straight seam electric resistance welded pipe, English Electric Resistance Welding, abbreviated as ERW, used to transport oil, natural gas and other vapor and liquid objects.
ERW straight seam welded pipe, also known as “resistance welded straight seam welded pipe”, ERW straight seam welded pipe is mainly divided into two forms: ERW AC welded steel pipe and ERW DC welded steel pipe. ERW straight seam welded pipes are divided into low frequency welding, intermediate frequency welding, super intermediate frequency welding and high frequency welding according to different frequencies. High-frequency welding is mainly used for the production of thin-walled steel pipes or ordinary wall-thick steel pipes, and high-frequency welding is divided into contact welding and induction welding.
1. Welded pipes are round pipes welded by steel plates, which are divided into high-frequency electric resistance welded pipes (ERW pipes), straight seam arc welded pipes (LSAW), and spiral welded pipes.
2. The line pipe is also the wire pipe, which is relatively thin and is represented by “T”, and it can only be used as a threading pipe. 3. ERW pipe is a “high-frequency resistance welded steel pipe”. It is different from the welding process of ordinary welded pipes. The weld seam is formed by melting the base material of the steel strip body, and its mechanical strength is better than that of ordinary welded pipes.
ERW means resistance welding. Resistance welding has the characteristics of high production efficiency, low cost, material saving, and easy automation. Therefore, it is widely used in various industrial sectors such as aviation, aerospace, energy, electronics, automobiles, and light industry. It is one of the important welding processes. one.
Product executable standards: API 5L, API 5CT, ASTM, EN10219-2, GB/T9711, 3091-20081, 3793-2008, 14291-2006 and other latest international standards.
Product steel grades include: GRB, X42, X52, X60, X65, X70, J55, K55, N80, L80, P110, and other steel grades.
ERW longitudinal welded pipes are mainly used in domestic water supply projects, 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.

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Standards and Classifications

roduction name	black carbon steel pipe （ERW）
Outside Dia(mm)	8mm-914mm
Wall Thickness(mm)	0.25mm-40mm
Length	5.8m、6m、8m、12m, or as customers’ requirement
Steel grades	Q195, Q235,Q345, ASTM A53,ASTM A36, ASTM A500, GRB, X42, X52, X60, X65, X70, J55, K55, N80, L80, P110, .etc.
Standards	BS EN 39, BS 1387, BS EN 10219, API 5L, ASTM A53, ASTM A500, ASTM A795, ISO65, ANSI C80, DIN2440, JIS G3444
Pipe ends	Plain end beveled end groove end or as customers’ requirment
Test	As customer requirment
Application	Green house, Furniture, Fluid, Goods shelf .etc.
Package	in bundle, or as customers’ requirement
Payment terms	TT or LC
Remark	We can proceed custormize, any doubt pls contact with us any time
quality inspection	chemical composition and mechanical properties testing, hydrostatic test, dimensional and visuzal inspection Non destructive inspection
Surface	hot dip galvanized , black bare，varnished painted in black or red or other color, anticorrosive coating 3PE 3PP FBE Epoxy

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Product Display

We have a large stock of steel tubes, such as spiral welded steel tube and longitudinal welded steel pipes, etc. Welcome to visit our factory at any time.

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Chemical Analysis and Mechanical Properties of LSAW Steel Pipes

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Standard	Grade	Chemical Composition(max)%					Mechanical Properties(min)
		C	Si	Mn	P	S	Tensile Strength(Mpa)	Yield Strength(Mpa)
API 5CT	h40	–	–	–	–	0.030	417	417
	J55	–	–	–	–	0.030	517	517
	K55	–	–	–	–	0.300	655	655
API 5L PSL1	A	0.22	–	0.90	0.030	0.030	335	335
	B	0.26	–	1.20	0.030	0.030	415	415
	X42	0.26	–	1.30	0.030	0.030	415	415
	X46	0.26	–	1.40	0.030	0.030	435	435
	X52	0.26	–	1.40	0.030	0.030	460	460
	X56	0.26	–	1.40	0.030	0.030	490	490
	X60	0.26	–	1.40	0.030	0.030	520	520
	X65	0.26	–	1.45	0.030	0.030	535	535
	X70	0.26	–	1.65	0.030	0.030	570	570
API 5L PSL2	B	0.22	0.45	1.20	0.025	0.015	415	415
	X42	0.22	0.45	1.30	0.025	0.015	415	415
	X46	0.22	0.45	1.40	0.025	0.015	435	435
	X52	0.22	0.45	1.40	0.025	0.015	460	460
	X56	0.22	0.45	1.40	0.025	0.015	490	490
	X60	0.12	0.45	1.60	0.025	0.015	520	520
	X65	0.12	0.45	1.60	0.025	0.015	535	535
	X70	0.12	0.45	1.70	0.025	0.015	570	570
	X80	0.12	0.45	1.85	0.025	0.015	625	625
ASTM A53	A	0.25	0.10	0.95	0.050	0.045	330	330
	B	0.30	0.10	1.20	0.050	0.045	415	415
ASTM A252	1	–	–	–	0.050	–	345	345
	2	–	–	–	0.050	–	414	414
	3	–	–	–	0.050	–	455	455
EN10217-1	P195TR1	0.13	0.35	0.70	0.025	0.020	320	320
	P195TR2	0.13	0.35	0.70	0.025	0.020	320	320
	P235TR1	0.16	0.35	1.20	0.025	0.020	360	360
	P235TR2	0.16	0.35	1.20	0.025	0.020	360	360
	P265TR1	0.20	0.40	1.40	0.025	0.020	410	410
	P265TR2	0.20	0.40	1.40	0.025	0.020	410	410
EN10217-2	P195GH	0.13	0.35	0.70	0.025	0.020	320	320
	P235GH	0.16	0.35	1.20	0.025	0.020	360	360
	P265GH	0.20	0.40	1.40	0.025	0.020	410	410
EN10217-5	P235GH	0.16	0.35	1.20	0.025	0.020	360	360
	P265GH	0.20	0.40	1.40	0.025	0.020	410	410
EN10219-1	S235JRH	0.17	–	1.40	0.040	0.040	360	360
	S275JOH	0.20	–	1.50	0.035	0.035	410	410
	S275J2H	0.20	–	1.50	0.030	0.030	410	410
	S355JOH	0.22	0.55	1.60	0.035	0.035	470	470
	S355J2H	0.22	0.55	1.60	0.030	0.030	470	470
	S355K2H	0.22	0.55	1.60	0.030	0.030	470	470

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Packing & Delivery

Shipping By Sea
1. Standard packaging
2. Packaging according to customer requirements

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FAQ

Q: Can I get samples before order ?

A: Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

Q: Can I go to your factory to visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What product information do I need to provide?

A: You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q: Does the product have quality inspection before loading?

A: Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept third party inspection.

Q: How do we trust your company?

A: We specialise in steel business for years, headquarter locates in Liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, we have CE and ISO9001 certificate, quality can be guaranteed.