“welded steel pipe” also known as straight seam welded pipe. Refers to the use of steel or steel plate bending deformation
into a round, square and other shapes, and then welded into the surface of the joint of the steel pipe. The blanks used to weld steel pipes are steel plates or strip steel.
“Welded Steel Pipe” according to the weld properties can be divided into: straight welded pipe and spiral welded pipe. They are
characterized by simple production process, high production efficiency and low cost. Most of the welded pipes with smaller
diameters are welded with straight SEAM. For large diameter welded pipe, spiral welding is mostly used.
“seamless pipe” is a kind of hollow section, no peripheral joints of long steel. Seamless steel tubes can be divided into
hot-rolled tubes, cold-rolled tubes, cold-drawn tubes, extruded tubes and so on. Can Be divided according to the material. It
is common carbon structure Tube, low alloy structure Tube, High Quality Carbon Structure Tube, alloy structure Tube,
stainless tube, etc. . According to the special purpose can be divided into, boiler pipe, geological pipe, oil pipe and so