Oil Line Pipes 1.Standard:BS, GB, DIN, ... St42, Q.. 3.Outer Diameter:8-24mm Oil Line Pipes Spiral Seam double-side submerged arc welded steel ... 8 - 1240 mm4. Thickness: 1 - 60 mm5. Length: 5.8-18m, or as customer's requirements.6. ... , ST42, ST52; EN10025 S235JR, S275JR, S355JR etc. Length 5.8-18m, or as customer’ s requirements. Place ... . hot-galvanized steel pipe Ssaw Oil Line Pipes (L415, L320, L450)