... g mild steel couplingsBS DIN ANSI Standard Carbon Steel Mild Steel Couplings screwed half couplingMaterialCarbon steel, Stainless steel, Alloy and ... standard, American standard and DIN standard Kinds of mild steel couplings : bends, elbows ,tees, crosses, sockets, ... connection etc. Materials: carbon steel ,stainless steel ,alloy steel . Surface of mild steel couplings: cold galvanizing,hot galvanizing ...