... steel pipe Q235 standard:API,ASTM,ASME,ANSI,JIS,DIN,BS,GB,ISO material:API 5L, A53,A106,A333 GR6,Q235,Q345 sell spiral steel pipe ... St33,St37, St44, ST52ASTM A 53: Gr. A, Gr B, Gr C, Gr.DAPI 5L: A, B, X42, X46, X52, X56, ... L390, L415, L450, L485, L555ASTM A252: Gr.1 Gr.2 Gr.3 Size range:Outer Diamter: 219.1mm - ... used type for the joining of steel pipes. Steel pipe is relieved with bevelled ends which ...