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API 5L

API 5L is for use in conveying gas, water, and oil in the natural gas and oil industries, and covers seamless and welded steel line pipe.

The API SPEC 5L specification provides standards for pipe suitable for use in conveying gas, water, and oil in the natural gas and oil industries. The API SPEC 5L covers seamless and welded steel line pipe. It includes plain-end, threaded-end, and belled-end pipe, as well as through-the-flowline (TFL) pipe, and pipe with ends prepared for use with special couplings.

Pipe manufactured to ASTM106 Grade A or B are not interchangable with API 5L. Requirements to API 5L X grades are more stringent; rolled grades are not acceptable and rework is not allowed. Moreover, particular attention is given to toughness and toughness tests for sour services and higher pressure & temperature classes.

API Size Size: API 5L Dimensional Table

Strength Levels & Desulphurization

Manganese sulphides are typical inclusions in all manganese alloyed steels. Because they tend to segregate resulting in reduced impact strength, sulphure content needs to be minimized. We specify maximum 0.007%.

API 5L Benefits & Applications

Gas, water and oil transportation - preferred in long pipelines due to inexpensiveness

Pipeline steel - resistance to crack propogation

Line Pipe / Sour Service Line Pipes

Seamless Carbon Steel Pipe API 5L

API 5L Seamless – Grades B, X42, X52, X60, X65, X70

API 5L Seamless Steel Pipe Chemical Composition & Grades

API 5L Seamless Steel Pipe Yield & Tensile Strength