ERW Welded Pipe


All posts for ERW Welded Pipe

Causes of Cracking of ERW Welded Pipes and Countermeasures

Thermal cracking refers to the cracks generated at high temperature, also known as high temperature cracks or crystal cracks, which usually occur inside the weld, and sometimes may also appear in the heat affected zone. The manifestations are: longitudinal cracks, transverse cracks, root cracks, cra ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 28 days agoPress > ERW Welded PipeChina Pipe manufacturer

Non-destructive Testing of ERW Welded Pipe

In order to protect the quality of the ERW welded pipe we produce, we will conduct quality inspection on each welded pipe produced. So what are the inspection methods for welded pipe? Today we will follow the editor of the Permanent Steel Manufacturing Co., Ltd  welded pipe manufacturer to understa ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 5 months agoPress > ERW Welded PipeNon-destructive TestingERW pipe +1

Comparison of ERW Welded Pipe and Seamless Steel Pipe (tested by PetroChina Pipe Institute)

1. Outer diameter tolerance ERW steel pipe : It is cold-formed and sizing is completed by reducing the diameter by 0.6%. The process temperature is basically constant at room temperature. Therefore, the outer diameter is controlled accurately and the fluctuation range is small, which is helpful to ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 7 months agoPress > ERW Welded PipeSeamless steel pipePetroChina Pipe +1