X70 pipeline steel is the designation in the API Spec 5L Pipeline Steel Specification of the American Petroleum Institute. X stands for pipeline steel in the API Spec 5L standard, and 70 is the strength grade, with the unit being kpsi.
tensile strength of X70 PSL1 oil and gas pipelines
| Type | Tensile Strength σb Mpa |
Yield point σs Mpa |
Elongation or elongation after fracture δ % |
|---|---|---|---|
|
API 5L X70 Seamless Pipe, API 5L X70 Welded Pipe
|
≥570 | ≥485 | * |
tensile strength of X70Q PSL2 Carbon Steel Line Pipe
| Type | Test Temperature | Tensile Strength σb Mpa |
Yield point σs Mpa |
Elongation or elongation after fracture δ % |
Impact energy absorption KV2 J |
|---|---|---|---|---|---|
| X70Q PSL2 Seamless Pipe,X70Q PSL2 Welded Pipe | ip | 570~760 | 485~635 | * | |
| OD≤30 | 0°C | ≥27 | |||
| OD>30~48 | 0°C | ≥40 | |||
| OD>48~56 | 0°C | ≥54 | |||
| OD>56~84 | 0°C | ≥68 |
tensile strength of X70M PSL2 Oil and gas transmission pipe
| Type | Test temperature | Tensile Strength σb Mpa |
Yield point σs Mpa |
Elongation or elongation after fracture δ % |
Impact energy absorptionV KV2 J |
|---|---|---|---|---|---|
| X70M PSL2 Welded Pipe | 570~760 | 485~635 | * | ||
| OD≤30 | 0°C | ≥27 | |||
| OD>30~48 | 0°C | ≥40 | |||
| OD>48~56 | 0°C | ≥54 | |||
| OD>56~84 | 0°C | ≥68 |
