... Manufacturer for 10 years Perforated and punched sheet Black sheet ironIn our factory, Black sheet iron is made by high speed ... and comprehensive finishing service for all of our materials including cutting, annealing, slitting, forming, bending with a return or ... , Galvanized steel, Aluminum, Brass, nickel sheets, ect.Available shapeBlack sheet iron can be Round, square, long round, triangle, scale, ...