sell spiral steel pipe Q235 standard:API,ASTM,ASME,ANSI,JIS,DIN,BS, ... material:API 5L, A53,A106,A333 GR6,Q235,Q345 sell spiral steel pipe Q235 SSAW (Spiral Submerged-arc Welded) Quality ... ,TS1997, UNI 6363, AWWA C-200 Steel Grade:Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL, 08F, 10F, 10 ... G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33,St37, St44, ST52ASTM A 53: Gr. A, Gr B, Gr C ...