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Line Pipe

Available format(s)

PDF

Language(s)

English

Published date

02-06-2026

Publisher

American Petroleum Institute

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£297.74

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Summarise this standard

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This specification specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipe for use in pipeline transportation systems in the petroleum and natural gas industries.

DocumentType	Standard
Pages	206
PublisherName	American Petroleum Institute
Status	Current
Supersedes	API 5L:2018 API 5L:2018/ERR 1:2018

Frequently Asked Questions

No — API 5L is a United States standard published by American Petroleum Institute (API), with its listed region as United States.

API 5L is American Petroleum Institute (API)'s standard for oil and gas equipment and tubular products, while API SPEC 6A:2018+ADD 4:2024 covers valves and wellhead equipment (United States). API 5L specifies technical, material and performance requirements for the oil and gas equipment or tubular product identified by the document. API SPEC 6A:2018+ADD 4:2024 specifies design, manufacture or testing requirements for valves, flanges or wellhead equipment.

API 5L is used by petroleum operators, engineering contractors, manufacturers and inspectors procuring critical oilfield equipment. It is a United States standard published by American Petroleum Institute (API).

API 5L specifies technical, material and performance requirements for the oil and gas equipment or tubular product identified by the document. It is a United States standard published by American Petroleum Institute (API).

API 5L specifies technical, material and performance requirements for the oil and gas equipment or tubular product identified by the document. In practice it is applied by petroleum operators, engineering contractors, manufacturers and inspectors procuring critical oilfield equipment.

£297.74

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API SPEC 5L:2026

Line Pipe

Abstract

General Product Information

Standards Referencing This Book

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Is API 5L an Australian standard?

What is the difference between API 5L and API SPEC 6A:2018+ADD 4:2024?

Who needs to comply with API 5L?

What is API 5L?

What is API 5L used for?