Suisheng welded steel pipe of  takes high quality product as a basis, and it has following outstanding characteristics:

1、Strict-straight inside welded seam. each pipe examined by flaw detection of whirling current.

2、Long usage period for special treatment in producing process. Distinguish of quality of Welded steel pipe according to the  following aspects:The smoothness of inside and outside surface of the pipe, the burr height of welding line, the straightness, wall thickness, roundness and length ect.