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