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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