ERW Welded Electric Structural Carbon Steel Pipe

high quality API 5CT casing and tubing for oil and gas drillings

February 14, 2017

High precision ASTM A53 carbon seamless steel pipe for gas and oil

February 17, 2017

Welded Steel pipe (erw & spiral) specification and Manufacturing method

API ERW Carbon Steel Pipes
Standard related to Grade:

No.	Name	Standard	Grades	Application
1	Casing Pipes	API 5CT	H40,K55, N80-1,J55	For oil-gas well casing
2	Line Pipes	API 5L	A, B–X70 L210–L485	For the pipeline transportation of oil and natural gas
3	Welded Steel Tubes For Pressure Purposes	EN10217-1	P195TR1 P195TR2 P235TR1 P235TR2 P265TR1 P265TR2	Welded Steel Tubes For Pressure Purposes

Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy ,Fusion Bond Epoxy, 3-layers PE)
Chemical Analysis(%):

Type of pipe	Class	Grade	C	Si	Mn	P	S	V	Nb	Ti
Type of pipe	Class	Grade	max	max	max	max	max	max	max	max
Welded	PSL1	L245 B	0.26	–	1.2	–	0.03	0.03	–	–
		L290 X42	0.26	–	1.2	–	0.03	0.03	–	–
		L320 X46	0.26	–	1.2	–	0.03	0.03	–	–
		L360 X52	0.26	–	1.2	–	0.03	0.03	–	–
		L390 X56	0.26	–	1.2	–	0.03	0.03	–	–
		L415 X60	0.26	–	1.2	–	0.03	0.03	–	–
		L450 X65	0.26	–	1.2	–	0.03	0.03	–	–
		L485 X70	0.26	–	1.2	–	0.03	0.03	–	–
	PSL2	L245M BM	0.22	0.45	1.2	0.025	0.015	0.05	0.05	0.04
		L290M X42M	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04
		L320M X46M	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04
		L360M X52M	0.22	0.45	1.4	0.025	0.015	–	–	–
		L390M X56M	0.22	0.45	1.4	0.025	0.015	–	–	–
		L415M X60M	0.22	0.45	1.6	0.025	0.015	–	–	–
		L450M X65M	0.22	0.45	1.6	0.025	0.015	–	–	–
		L485M X70M	0.22	0.45	1.7	0.025	0.015	–	–	–
		L555M X80M	0.22	0.45	1.85	0.025	0.015	–	–	–

Warehouse and Stock Indoor:

ERW/HFW/HFI Steel Pipe API 5L/SANS719/AS/NZS1163 GR. B C350

Manufacture Process:

Type of pipes		Similar specification
Type	Manufacturing method	Korea	Japan	U.S.A	U.K/ Others	Application
	ERW	Carbon steel pipes for ordinary piping (KS D 3507/SPP)	Carbon steel pipes for ordinary piping (JISG 3452/SGP)	ASTM A53	BS 1387 EN10255 IS065	Steel pipes for steam, air, water, oil and gas etc. with relatively low pressure
	ERW	Galvanized steel pipes for water service (KS D 3537/SPPW)	Galvanized steel pipes for v\/at6「service (JISG 3442/SGPW)	ASTM A53	BS 1387 EN10255 IS065	Steel pipes for water supply with 100m or less at water head
Steel pipes for ordinary piping	ERW Spiral Roll bending	Coated steel pipes for water works (KS D 3565/STWW) Fittings of coated steel pipes for water works (KS D 3578)	–	AWWA C200, C203	–	Steel pipes for water works
	Spiral Roll bending	Arc welded carbon steel pipes (KS D 358B/SPW)	Arc welded carbon steel pipes (JISG 3457/STPY)	ASTM A 134, A139,A671, A672	–	Steel pipes for steam, air, water, oil and gas etc. With relatively low pressure
Steel pipes for pressure service	ERW and SAW	Carbon steel pipes for pressure service (KS D 3562/SPPS)	Carbon steel pipes for pressure service (JISG 3454/STPG)	ASTM A53 API 5L	BS 3601 EN10217-1 ISO9330-1	Steel pipes for application at a temperature of 350° C or less
Steel pipes for pressure service	Roll bending	Arc welded carbon steel pipes (KS D 358B/SPW)	Arc welded carbon steel pipes (JISG 3457/STPY)	–	–	Piping for steam, water, gas, air of comparatively low working pressure.
	ERW	Carbon steel tubes for machine structural purposes (KSD3517/STKM)	Carbon steel tubes for machine structural purposes (JISG 3445/STKM)	ASTM A513	BS 980 BS 1717 BS 1775	Steel pipes for application for mechanical Parts such as machinery, automobiles, bicycles, furniture and fixtures etc.
Steel pipes for structural purposes	ERW Spiral Roll bending	Caron steel tubes for machine structural purposes (KS D 3566/STK)	Carbon steel tubes for general structural purposes (JIS G 3444/STK)	ASTM A500	BS 980 BS 1139 BS 4848	Steel pipes for application for structures such as civil works, architecture, steel tower, scaffolding, piles, veranda and fence and post etc.
Steel pipes for structural purposes	ERW	Carbon steel square pipes for general structural purposes (KS D 3568/SPSR)	Carbon steel square pipes for general structural purposes (JIS G 3466/STKR)	ASTM A500	BS 4848	Steel pipes for application tocivil works, architecture and other stuctures
	ERW Roll bendinq	Steel pipe piles (KS F 4602)	Steel pipe piles (JISA 5525/SKK)	ASTM A252	–	Steel pipes for foundation civil works, architectures etc.
	Spiral Roll bending	–	–	Fubrication of structural steel pipe (API 2B)	–	Offshore structure. Piping and main structural members
Line pipe	ERW Roll bending	–	–	API 5L (GR, A, B, X42, X46, X52, X56, X60, X65, X70, X80)	–	Steel pipes for transportation petroleum and natural gas
OCTG	ERW	–	–	API 5CT (H40, J55, K55, N80)	–	Steel pipes for development for petroleum and natural gas
Conduits	ERW	Rigid steel conduits (KSC 8401)	Rigid steel conduits (JIS C 8305)	ANSI C80.1 UL6	BS 31	Steel pipes for protection of electric cable at electric distribution lines
Steel tubes for boiler & heat exchanger	ERW	Carbon steel boiler and heat exchanger tubes (KS D 3563/STBH)	Carbon steel boiler and heat exchanger tubes (JISG 3461/STB)	ASTM A 178, A 214, A 226	BS 3059 BS 3606	Water pipes for boiler, connection pipe, overheat engine, air preheating pipe and heat exchange pipes, condenser
Coated steel pipes	ERW Spiral Roll bending	–	–	–	–	Coated steel pipes for protection of outside surface of steel pipe for underground burial.
Steel tubes for tower structural purposes	ERW Spiral Roll bending	–	–	–	–	High tensile steel pipes applicable to electric transmission tower