API 5L is a standard developed by the American Petroleum Institute (API) and is primarily used for oil and gas pipelines. It specifies the requirements for the manufacture, inspection, and acceptance of seamless steel pipes to ensure sufficient strength and corrosion resistance in harsh operating environments. API 5L GRB seamless steel pipes are generally manufactured using hot rolling or cold drawing processes, and the material is typically carbon steel.
What is the tensile strength of API 5L Grade B?
Tensile Strength: Minimum 415 MPa
| Yield Properties a R t0,5 PSI Min |
Elongational (in 2in Af % min) |
Tensile Properties grade a Rm PSI Minimum |
Tensile Properties grade b Rm PSI Minimum |
|
|---|---|---|---|---|
| Gr B | 36,500 | c | 60,200 | 65,200 |
Grade B Pipe Tolerance Specification
| Tolerance on dimension | |||||
| OD Tolerance | WT Tolerance | ||||
| A, B | X42 ~ X70 | ||||
| D<60.3mm | +0.41/-0.40mm | D<73mm | +20%/-12.5% | D<73mm | +15%/-12.5% |
| D>=60.3mm | +0.75/-0.40mm | D>=73mm | +15%/-12.5% | D>=73mm | +15%/-12.5% |
Grade B Line Pipe Chemical Compatibility Chart
| PSL1 | PSL2 | |||||||
|---|---|---|---|---|---|---|---|---|
| Gr | C | Mn | P | S | C | Mn | P | S |
| B | 0.27 | 1.30 | 0.05 | 0.03 | 0.24 | 1.20 | 0.020 | 0.010 |
Packaging and shipping
API 5L GRB pipe for gas and oil factory
