Large-diameter Thick-wall straight-seam Longitudinally Submerged Arc Welded carbon steel pipes (LSAW Pipes), and they are mainly used for Machinery Roller-making Pipes Forming Mode: JCOE Dimension: Diameter:ª¦350-1600mm, Wall thickness: 6-60mm Unit length:6-12m Applying Fields: Machinery roller-making pipes for paper making machines, etc.