1.structural hollow section . 2. ANSI/AMSE/JIS/DIN/GB 3. Certificate: ... cut). or beveled for welding, beveled,Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti ... SteamASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessDIN 2458 WELDED ... 08, 08AL, 08F, 10F, 10, HG5, DF08 SPHC, M8 hot rolled q345 steel pipe