Difference between Seamless & Welded Stainless Steel Pipes
Seamless steel pipe is manufactured by the round steel billet, through hot rolling, cold rolling, or cold drawn processes, with no seam on the pipe body. Welded steel pipe is manufactured by flat steel plate, with a welding seam on the pipe body. Including ERW pipe, LSAW pipe, and SSAW pipe. Octal tells you the differences between steel seamless pipe and welded steel pipe fittings on raw material, seamless pipe manufacturing processes, performances, appearances, sizes, applications, cost prices, etc. From the names, it is obvious that the basic seamless tube manufacturing method differs. A seamless tube is extruded and drawn from a billet, while a welded tube is formed by rolling and welding a strip. A welded tube is much less expensive than seamless tubes and is readily available in long continuous lengths. In spite of the fact that welded tubes have a lower working pressure than seamless tubes, working pressure is not the deciding factor when choosing a se...