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API 5L seamless & welded pipe

UKR Steel Products stocks API 5L pipe in grades B, X42, X52, X60, X65 & X70.

Sizes

  • Seamless from 2″ NPS to 36″ OD

  • ERW from 2″ NPS to 24″ OD

  • DSAW from 20″ to 48″ OD

Scope

ANSI / API 5L specifies the manufacture of two product levels (PSL1 and PSL2) of seamless and welded steel pipe for the use of a pipeline in the transportation of petroleum and natural gas. For material use in a sour service application, refer to Annex H; for offshore service application, refer to Annex J of API 5L 45th Edition.

Process

Ingots, blooms, billets, coils, or plates used for the manufacture of pipe shall be made via basic oxygen, electric furnace, or open hearth in combination with a ladle refining process. For PSL2, the steel shall be killed and melted according to a fine-grain practice. The coil or plate used for PSL2 pipe shall not contain any repair welds.

Delivery condition

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Chemical requirements

Chemical Composition for PSL 1 pipe with t ≤ 0.984”

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Chemical Composition for PSL 2 pipe with t ≤ 0.984”

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Chemical Composition for PSL 2 pipe with t ≤ 0.984”

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Hydrostatic test

Pipe to withstand a hydrostatic test without leakage through the weld seam or the pipe body. Jointers need not be hydrostatic tested provided the pipe sections used were successfully tested.

Bend test

No cracks shall occur in any portion of the test piece and no opening of the weld shall occur.

Flattening test

Acceptance criteria for the flattening test shall be:

  • EW pipes D<12.750 in:

  • X60 with T 500in. There shall be no opening of the weld before the distance between the plates is less than 66% of the original outside diameter. For all grades and walls, 50%.

  • For a pipe with a D/t > 10, there shall be no opening of the weld before the distance between the plates is less than 30% of the original outside diameter.

  • For other sizes refer to the full API 5L specification.

CVN impact test for PSL2

Many PSL2 pipe sizes and grades require CVN. Seamless pipe is to be tested in the body. Welded pipe is to be tested in the body, pipe weld, and heat-affected zone. Refer to the full API 5L specification for the chart of sizes and grades and required absorbed energy value

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