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Spiral Steel Pipe Erw Pipe Coating Pipe Thermal Insulation Steel Pipe

Oil And Natural Gas Transmission Pipe

Taxonomy:Spiral Steel Pipe

Product number:001

Shelf time:2014-09-09

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Product introduction

Product Name: pipeline for oil and natural gas transmission

Standard: GB/T9711-2011 PSL1

Steel grade: X52/L360

Specifications: 820 x 12 x 12000mm

Technical requirements:

Outer diameter deviation: tube body is less than or equal to 4.0mm; pipe end is less than or equal to 1.6mm.

The thickness deviation is less than or equal to 0.1t.

Ellipticity: tube body is less than 12mm, pipe end is less than 8.2mm.

Length deviation: +/-50mm;

Straightness: the full length of the steel pipe is less than 0.2%L; it is less than 4.0mm in the 1m length of each pipe end.

Slant: less than 1.6mm;

Groove angle: 30 degree -35 degrees;

Blunt edge: 1.6 + /-0.8mm;

Outer weld height: less than 3.5mm;

Internal weld height: less than 3.5mm;

The hydrostatic test pressure is more than 9.5MPa, the time of stabilizing is more than 10s.

NDT: 100% weld length RT.

Copyright:Boai pipeline Technic group

JingLan(Tianjin) Technology Co., Ltd.