steel welded round ring for construction (1) we are factory (2)size 6mm-30mm (3)Galv/H.D.G /self colour (4) Steel 304 316 steel welded round ring for construction1)Standard : DIN741,DIN1142,US type,Simplex,Duplex,Oval-(2),Material : Stainless steel 304 or 316,Carbon Steel(3),Surface: Hot dipped Galvanized, electro galvanized, Self-colour(4),Size: From M6 to M30(5),Packing:PP bags/Carton+steel ...