SSAW steel pipe, also known as spiral submerged arc welded steel pipe, is a type of spiral welded steel pipe produced using a double-sided submerged arc welding method. Spiral welded pipe is made from narrower plates or hot-rolled coils, significantly reducing production costs. The spiral welding process allows for the production of large-diameter pipes, suitable for transporting large quantities of oil and natural gas. There are many standards for SSAW steel pipe, such as API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS, JIS, and IS. Today, we will introduce the specifications of SSAW steel pipe according to ASTM A252.