Q235A Hot Galvanized Carbon Steel Seamless Pipe For Fluid Boiler Drill

Description

Welded steel pipe, also known as welded pipe, is made of steel plate or strip after crimping forming welded steel pipe, general length 6 meters. Welded steel pipe production process is simple, high production efficiency, variety of specifications, less investment in equipment, but the general strength is lower than seamless steel.

Since the 1930s, with the rapid development of high quality strip rolling production and the progress of welding and inspection technology, the quality of weld is constantly improving, the variety and specifications of welded steel pipe are increasing day by day, and replaced seamless steel pipe in more and more fields. Welded steel pipe is divided into straight seam welded pipe and spiral welded pipe according to the form of weld. Classification by production method: Process classification - arc welding pipe, resistance welding pipe, (high frequency, low frequency) gas welding pipe, furnace welding pipe.

Direct seam welding is used for smaller diameter welded pipes, while spiral welding is used for larger diameter welded pipes. According to the shape of the steel pipe end, it is divided into circular welded pipe and special-shaped (square, rectangular, etc.) welded pipe; According to the different materials and uses, it can be divided into welding steel pipe for mineral fluid transportation, galvanized steel pipe for low pressure fluid transportation, electric welding steel pipe for belt conveyor roller, etc. According to the current gb specification size table, according to the outer diameter * wall thickness from small to large order.