... Material: malleable iron Standard: Din, American, British Size: 1/2'-6'' Surface: black, G.i Typeelbow, tee, reducer, cap ... , sockets , backnuts , flanges ,unions ,nipples bushings ,etcsize1/2"--6''CoatingsCold galvanizing , hot galvanizing or black and so on.EdgesBanded ... mm2,HardessHb163,Elongation6%.Hydrostatic testing;test pressure=2.4Mpa,Working Pressure=2.0Mpa .Delivery timeAccording to customer's ...