Straight seam welded steel pipe: the production process is simple with high production efficiency, low cost in a rapid development process.

Spiral welded steel pipe: Longitudinal strength is generally higher than that, can narrow the billet production of large diameter pipe, you can also use the same width of the billet production of different pipe diameters, but compared with the

same length of straight seam pipe. weld length of 30 to 100%, and lower production rate. Therefore, the smaller diameter pipe is mostly a straight seam welding, large diameter spiral welded pipe for the most part.

Usually welded steel pipe: Usually welded steel pipe used to transport low pressure fluid Q195A, Q215A, Q235A steel can also be used with other soft easy to weld steel pipe to be pressure, bending, flattening and other experiments, the

surface quality... certain requirements, usually delivery length of 4-10m, are often asked to cut to length (or double length) delivery. Scaffolding tube specifications with nominal diameter representation (millimeters or inches) nominal diameter different from

the actual, as required pipe wall thickness of ordinary steel and thicker steel pipe two kinds of steel tube end form was divided by threaded and non-threaded two kinds.