Welcome to the brand official website of Bo Ai pipeline technology group. English 中文
Spiral Steel Pipe Erw Pipe Coating Pipe Thermal Insulation Steel Pipe

Steel Pipe For Gas Transportation

Taxonomy:Spiral Steel Pipe

Product number:A005

Shelf time:2014-07-08

Times of browsing:

National service hotline

400-185-8399

Online consulting

Product introduction

Product Name: steel pipe for gas transportation


Standard: SY/T5037-2012


Steel grade: Q345B


Specifications: 720 x 10 x 12000mm


Technical requirements:


Outer diameter deviation: tube body is less than or equal to 0.75%D; pipe ends are less than or equal to 0.50%D or 4.5mm, take a small value.


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


Ellipticity: the maximum outer diameter is less than 1%D, and the minimum outer diameter is less than 1%D in the 1000mm length range of the pipe ends.


Length deviation: +/-50mm;


Straightness: the full length of the steel pipe is less than 0.2%L.


Slant: less than 3mm;


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 7.7MPa, the time of stabilizing is more than 10s.


NDT: every 10 roots should be pumped at least 2 for full length RT.


Copyright:Boai pipeline Technic group

JingLan(Tianjin) Technology Co., Ltd.