Comparison


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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 1 month agoPress > ERW Welded PipeSeamless steel pipePetroChina Pipe +1

Comparison of ERW and LSAW Steel Pipes

" ERW steel pipe " is a high-frequency straight seam resistance welded pipe. It is used to transport vapor and liquid objects such as oil and natural gas, and can meet various requirements of high and low pressure. At present, it plays a pivotal role in the field of transportation pipes in the world ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 4 months agoPress > erw steel pipelsaw steel pipeComparison