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.
The American Petroleum Institute specification API 5L covers seamless and welded steel line pipe. This is steel pipe for pipeline transportation systems in the petroleum and natural gas industries. API 5L is suitable for conveying gas, water, and oil. Size range is limited only by manufacturer’s capabilities.
Specifications for API 5L adhere to the International Organization for Standardization ISO 3183, which standardizes pipeline transportation systems within the materials, equipment and offshore structures for petroleum, petrochemical, and natural gas industries. The technical committee authoring the standards recognized that there are two basic Product Specifications Levels (PSL) of technical requirements and therefore developed PSL 1 and PSL 2. PSL 1 is a standard quality for line pipe where PSL 2 contains additional chemical, mechanical properties, and testing requirements.
Pipe grades, Steel grades and acceptable delivery conditions:
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PSL
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Delivery conditions for API 5L X42 PSL1 Seamless Pipe
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Steel grade
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PSL 1
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As rolled, normalizing rolled, thermomechanical rolled / formed, normalizing formed, normalized and tempered; if agreed, quenched and tempered for SMLS pipe only
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B
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As rolled, normalizing rolled, thermomechanical rolled / formed, normalizing formed, normalized and tempered or quenched and tempered
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X42
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X46
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X52
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X56
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X60
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X65
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X70
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PSL 2
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As rolled
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BR
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Normalizing rolled / formed, normalized, normalized and tempered
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BN
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Quenched and tempered
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BQ
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| Type | Carbon Steel API 5L Gr. X42 Seamless Pipe |
|---|---|
| Pipe Size | Sizes (Seamless): 1/2” NB – 60” NB Sizes (ERW): 1/2” NB – 24” NB Sizes (SAW): 16” NB – 100” NB |
| Wall Thickness | SCH10,SCH20,SCH30,STD,SCH40,SCH60,XS,SCH80,SCH100,SCH120,
SCH140,SCH160,XXS DIN, JIS standard thickness |
| Length | Fixed: 5.8, 6.0, 11.8, 12.0m Random length: 5-12m |
| Standard | ASTM A53, A106, API 5L, ASME B36.10M-1996 DIN1626, DIN1629, DIN17175, DIN 2448 JIS G3452, JIS G3454, JIS G3455, JIS G3456, JIS G3457, JIS G3461 |
| Material | Q235, Q345, A53B, A106B, API 5L B, X42, X46, X52, X60, X65
ST37.0, ST35.8, St37.2, St35.4/8, St42, St45, St52, St52.4 STP G38, STP G42, STPT42, STB42, STS42, STPT49, STS49 |
| Application | Low and middle pressure fluid pipeline, boiler, petroleum and natural gas industry, drilling, chemical industry, electric industry, shipbuilding, fertilizer equipment and pipeline, structure, petrochemical, pharmaceutical industry |
| Surface | Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE |
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