Introduction to the difference between ERW welded pipe and seamless steel pipe.

Introduction of straight seam steel pipe forming process

Common seamless steel pipe standard

ASTM A53 line pipe is a line pipe that belongs to the American Petroleum Standard.

Structural seamless steel pipe is used for manufacturing pipes, containers, equipment, pipe fittings and mechanical structure seamless steel pipe.

Thick-walled steel pipe, refers to steel pipe with a ratio of the outer diameter of the steel pipe to the wall thickness of less than 20.