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API 5L X70 steel
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API 5L X70 steel

API 5L X70 steel

X70 steel plate/pipes,under API 5L standard, we can regard X70 steel plate/pipes as large diameter pipes. X70 steel plate/pipes is one mainly of steel for large diameter pipes, API-X70 steel with the demands in mechanical properties of the pipes followed the API specification for grade X70 (YS is 485MPa, TS is 570 MPa). It is well known that a low carbon bainitic microstructure offers an excellent combination of strength and toughness.

   X 70 API5L Material#1.8977 Comparison of steel grades
EU 113 -
NBN629 -
DIN 17172 StE 480.7TM
EN10208-2 L485MB

API 5L X70 chemical composition-%:

Grades Material number C max Si max Mn. mix P max S max
X70 1.8977 0.28 - 1.40 0.030 0.030

API 5L X70 mechanical properties:

  Grade X70 Permissible yield point ratio Yield Strength MPa(min) Tensile Strength MPa
≤ 0.85 485 570

API 5L X70 steel pipe specification:

Seamless pipe: outer diameter:10.3-965.2 mm ,Wall thickness: 1.24-59.54mm

ERW: outer diameter :21.3—609.6mm. Wall thickness :2.5-18mm

LASW : outer decameter : 21.3—609.6mm. Wall thickness :2.5-18mm

SSAW:outer decameter :219-2220mm. Wall thickness : 4.5-25.4mm

Any question for API 5L X70 steel plate, API 5L X70 steel pipe, please be free to contact with us.

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