Difference Between Seamless Steel Pipe and Weld Pipe The weld or seam tube is manufactured from a flat steel sheet or plate, and a seam is made by welding the tube body. Many companies offer explanations on the differences between the raw material of Seamless Steel Pipe and welded steel pipes. They provide information on manufacturing processes, yields, appearances, sizes, uses, prices, etc. How seamless pipe is made API 5L and ASTM A672 PIPE Seamless Steel Pipe employ a solid steel metal or cylinder as the raw material. Then they are borer and molded through a warm rolling, freezing rolling, or cold drawing procedure. Seamless steel pipe is formed using billet forging, drilling, rolling, molding, and more. Seamless steel pipes with wider diameters and wall thickness usually are manufactured this way. The seamless pipe can also use cold drawing technology, that is, at low temperatures, for its manufacture. The result is a material with relatively little resistance, but with a fairly smooth internal surface. Tubes with a smaller diameter and wall thickness are generally manufactured using this method. Seamless pipes like ASTM A179 Tube are rolled using carbon-framed steel, low-alloy steel, or alloy steel with a stainless steel base.
How the welded tube is made API 5L or ASTM A53 GRADE B welded steel tube comprises these three kinds of tubes: LSAW, SSAW, and ERW steel pipe. These tubes are made from a sheet or steel plate. The built-up process starts with the bending of the steel coat or sheet. Then welding is carried out to achieve the cylindrical, square, or any desired shape. The welding tube has the characteristics of being very efficient in mass production, low costs and material savings. It has been extensively used in aviation, aerospace, energy, light, and other sectors. It is also notable for its resistance to corrosion in environments with high levels of acidity.