DIN127B,DIN7980,ASME B 18.21.1 are available size from M3 to M42,1/4" to 1" black finish,zinc plated and hot-dip ... galvanized 1)raw material: q235,q1952)size ... : from M3 to M42,1/4" to 1"3)finish:black,zinc plated,hot-dip galvanized4)loading port ...