"API 5L" is the pipeline steel pipe standard formulated by the American Petroleum Institute. It stipulates the requirements for the manufacturing, testing, and acceptance of pipeline steel pipes; "L485" and "X70" represent the yield strength grade of the steel pipe, that is, the steel pipe is subjected to The maximum stress it can resist when external force acts is 485MPa or 70ksi.
L485 line pipe has excellent mechanical properties, including high strength, high toughness and excellent weldability. Its tensile strength usually exceeds 570MPa, which can meet the transportation needs of high-pressure and large-flow fluids.
In addition, seamless carbon steel pipe L485 also has good low-temperature toughness and hydrogen-induced cracking (HIC) resistance, and can maintain stable performance under extreme environmental conditions.
Chemical Properties of ISO 3183 L485 Pipe
| API 5L X70 PSL 1 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Grade | Composition, % | |||||||
| C max | Mn max | P | S max | V max | Nb max | Ti max | ||
| min | max | |||||||
| B | 0.28 | 1.2 | - | 0.03 | 0.03 | c.d | c,d | d |
| X70 | 0.28 | 1.4 | - | 0.03 | 0.03 | f | f | f |
Api 5l Gr. X70 pipe Properies
API 5l X70 Tensile Strength
| Grade | Yield Strength Mpa | Tensile Strength Mpa | Raito | Elongation | ||
|---|---|---|---|---|---|---|
| min | max | min | max | max | min | |
| BN | 245 | 450 | 415 | 655 | 0.93 | f |
| BQ | ||||||
| X70Q | 485 | 635 | 570 | 760 | 0.93 | f |
| Grade | Yield Strength | Tensile Strength | Yield to Tensile | Elongation |
|---|---|---|---|---|
| min. (KSI) | min. (KSI) | Ratio (max) | % | |
| API 5L X70 | 70 | 82 | 0.93 | 17 |
API 5L L485 Seamless Pipe
Api 5l X70 Pipe Pressure Rating Chart
| Pipe O.D. (in.) |
Wall Thickness of Pipe (inches) | |||||||
|---|---|---|---|---|---|---|---|---|
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||
The L485 grade is a commonly used grade specified in the ISO 3183 standard. GNEE supplies and sells ISO Gr L390 PSL1, PSL2 steel pipe, ISO 3183 Gr L485 LSAW/seamless/welded pipe in various sizes and specifications, if you are looking for this material, please contact us or get a quote. Not only do we have a variety of sizes, but we also have a variety of hard-to-find sizes.sales@gneetube.com
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