WELDED STEEL PIPE BY USE CLASSIFICATION

Welded steel pipe: also known as pipe, steel sheet or strip is bent after molding, and then formed by welding. Press seam form is divided into Longitudinal and spiral welded pipe. By end-use is divided into general welded pipe, galvanized pipe, oxygen blowing pipe, wire casing, metric pipe, roller tube, deep well pump tube, automotive tube, transformer tube, welding thin-walled tube, welding shaped tube and spiral welded pipe.

General Pipe: General pipe used to transport low pressure fluid. With Q195A, Q215A, Q235A steel. Other easy-welding of mild steel. To pass pipe steel and thicker steel pipe specifications with nominal pipe mouth pressure, bending, flattening and other experiments, there are certain requirements for surface quality, usually delivery length of 4-10m real different, according to the provisions pipe wall thickness Pu are two, according to steel threaded and non threaded two kinds. With pipe technology to enhance and improve the processing is simple, and now instead of part of welded pipe seamless tube, pipe is capable of producing 219mm (8 inches) or more.

Oxygen pipe: for steelmaking blowing tube, usually with small diameter welded pipe, specifications from 3/8 inch -2 inch eight kinds. Made 08,10,15,20 or Q195-Q235 strip. To corrosion, and some carried ALUMINIZING.

Metric pipe: seamless form with specifications, pipe diameter * wall thickness in millimeters, with ordinary carbon steel, high carbon steel or low alloy steel Prudent Energy tropical, cold with welding, or welding after tropical by cold call method made. Metric thin-walled pipe sub ordinary and ordinary as a structural member, such as a drive shaft, or transmission fluid, used in the production of thin-walled furniture, lamps, etc., to ensure the strength and pipe bending test. Roller tube: welded steel pipefor the belt conveyor idlers, hydrostatic and general flattening test.

Spiral welded pipe: a low-carbon steel strip by a prime structural steel or low-alloy structural predetermined helix angle (called molding angle) rolled into a tube and then seam welded tubes made of strip production of large diameter steel. Spiral welded pipe is mainly used for oil, natural gas pipelines, its specifications diameter * wall thickness. There are spiral welded pipe welding and double-sided welding, pipe should ensure that hydrostatic test, weld tensile strength and forming performance to meet the requirements.