What are the standards and grades of API 5L ERW line pipe?

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Update time : 2024-12-24 09:13:47

　　Shengtian Group are API 5L X42 / X46 / X52 / X60 / X65 / X70 ERW pipe experts, reliable API 5L welded pipe supplier and manufacturer in China.

ERW Standard and Line Pipe Grades:

Grade A Carbon Steel	(ASTM A53, A523, API 5L PSL1 )
Minimum Yield Strength:	30,000 psi
Maximum Yield Strength:	None
Minimum Tensile Strength:	48,000 psi
Notes: This grade may be used for standard pipe, line pipe, or conduit pipeas specified in the various ASTM and API specifications.

Grade B Carbon Steel	(ASTM A53, A523, API 5L PSL1)	API 5L PSL2
Minimum Yield Strength:	35,000 psi	35,000 psi
Maximum Yield Strength:	None	65,000 psi
Minimum Tensile Strength:	60,000 psi	60,000 psi
Maximum Tensile Strength:	None	110,000 psi
Notes: This grade may be used for standard pipe, line pipe, or conduit pipeas specified in the various ASTM and API specifications.

API 5L X42	PSL1	PSL2
Minimum Yield Strength:	42,000 psi	42,000 psi
Maximum Yield Strength:	None	72,000 psi
Minimum Tensile Strength:	60,000 psi	60,000 psi
Maximum Tensile Strength	None	110,000 psi
Notes: This is a standard line pipe grade specifiedin API (American Petroleum Institute) specification 5L.

API 5L X46	PSL1	PSL 2
Minimum Yield Strength:	46,000 psi	46,000 psi
Maximum Yield Strength:	None	76,000 psi
Minimum Tensile Strength:	63,000 psi	63,000 psi
Maximum Tensile Strength:	None	110,000 psi
Notes: This is a standard line pipe grade specifiedin API (American Petroleum Institute) specification 5L.

API 5L X52	PSL1	PSL2
Minimum Yield Strength:	52,000 psi	52,000 psi
Maximum Yield Strength:	None	77,000 psi
Minimum Tensile Strength:	66,000 psi	66,000 psi
Maximum Tensile Strength:	None	110,000 psi
Notes: This is a standard line pipe grade specifiedin API (American Petroleum Institute) specification 5L.

API 5L X56	PSL1	PSL2
Minimum Yield Strength:	56,000 psi	56,000 psi
Maximum Yield Strength:	None	79,000 psi
Minimum Tensile Strength:	71,000 psi	71,000 psi
Maximum Tensile Strength:	None	110,000 psi
Notes: This is a standard line pipe grade specifiedin API (American Petroleum Institute) specification 5L.

API 5L X60	PSL1	PSL2
Minimum Yield Strength:	60,000 psi	60,000 psi
Maximum Yield Strength:	None	82,000 psi
Minimum Tensile Strength:	75,000 psi	75,000 psi
Maximum Tensile Strength:	None	110,000 psi
Notes: This is a standard line pipe grade specifiedin API (American Petroleum Institute) specification 5L.

API 5L X65	PSL1	PSL2
Minimum Yield Strength:	65,000 psi	65,000 psi
Maximum Yield Strength:	None	87,000 psi
Minimum Tensile Strength:	77,000 psi	77,000 psi
Maximum Tensile Strength:	None	110,000 psi
Notes: This is a standard line pipe grade specifiedin API (American Petroleum Institute) specification 5L.

API 5L X70	PSL1	PSL2
Minimum Yield Strength:	70,000 psi	70,000 psi
Maximum Yield Strength:	None	90,000 psi
Minimum Tensile Strength:	82,000 psi	82,000 psi
Maximum Tensile Strength:	None	110,000 psi
Notes: This is a standard line pipe grade specifiedin API (American Petroleum Institute) specification 5L.

Grade 1 Carbon Steel	(ASTM A252)
Minimum Yield Strength:	30,000 psi
Maximum Yield Strength:	None
Minimum Tensile Strength:	50,000 psi
Notes: This gradeis a standard grade for ASTM A252. The specification coversthe requirements for welded and seamless steel piling pipe.

Grade 2 Carbon Steel	(ASTM A252)
Minimum Yield Strength:	35,000 psi
Maximum Yield Strength:	None
Minimum Tensile Strength:	60,000 psi
Notes: This grade is a standard grade for ASTM A252. The specification coversthe requirements for welded and seamless steel piling pipe.

Grade 3 Carbon Steel	(ASTM A252)
Minimum Yield Strength:	45,000 psi
Maximum Yield Strength:	None
Minimum Tensile Strength:	66,000 psi
Notes: This grade is a standard grade for ASTM A252. The specification coversthe requirements for welded and seamless steel piling pipe.

　　ERW line pipe manufacturing process:

　　Straight seam high frequency welded line pipe (ERW) is formed by forming a hot-rolled coil through a forming machine. The skin effect and proximity effect of high-frequency current are used to heat and melt the edge of the pipe blank. Pressure welding is carried out under the action of a squeeze roller. Realize production. Carbon steel ERW welded pipes have simple production process, high production efficiency, many varieties and specifications, and less equipment, but their general strength is lower than seamless steel pipes.
ERW管制造工艺

　　API 5L is the standard for pipeline systems for the petroleum and natural gas industry, including the transportation of fluids such as petroleum, natural gas, water and oil. ‌API 5L standards are divided into two levels, PSL1 and PSL2. The requirements of PSL1 level are relatively low, the testing requirements are not as stringent, and it is generally more cost-effective. The PSL2 level has higher technical requirements, including resistance to ductile fracture growth, sour service conditions and offshore service conditions. ‌

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