Seamless pipe is formed from a cylindrical bar of steel. The bar is heated to a high temperature and then a probe is inserted to create a hole through the cylinder. The cylinder is then transferred to rollers which size the cylinder to the specified diameter and wall thickness. A few mills can produ

Methods of Manufacture.The pipe is manufactured by one of the following processes:Seamless (SMLS) pipe is made by a process that does not involve welding at any stage of production.Welded (WLD) pipe is made using an automatic welding process with no addition of filler during the welding process.Heav