How to identify seamless pipe and welded pipe

How to identify seamless pipe and welded pipe

 

Seamless steel tubes have a hollow cross-section and are used in large quantities as pipes for transporting fluids, such as pipes for transporting oil, natural gas, gas, water, and certain solid materials. Compared with solid steel such as round steel, steel pipes have a lighter weight when subjected to the same flexural and torsional strength, and are economical cross-section steels. They are widely used in the manufacture of structural and mechanical parts such as oil drill pipes, automobile transmission shafts, and bicycles. Frames and steel scaffolds used in construction and construction use steel pipes to make ring-shaped parts, which can increase material utilization, simplify the manufacturing process, save materials and processing man hours, and have been widely manufactured using steel pipes.

Different molding processes.
 

Such as water lines, generally welded by steel plates, after welding, a weld can be found on the above; the diameter is generally a weld of a spiral weld. The seamless steel pipe is generally a melted state of the molten steel after the annular seam, and is processed through a machining process or the like, so no welding is performed. In terms of performance, especially in bearing bearing capacity is greatly increased compared with ordinary steel, so it is often used for high pressure equipment. Such as hydraulic equipment, such as pipe connections.

The welded part of the ordinary steel pipe is a weak link, and the welding quality is the main factor that affects the entire performance. People who have lived in the north have had experience in winter plumbing or heating pipes, and where explosions are generally welded steel pipes are not seamless.