Castech Metallurgy is a world class ferrous foundry producing value added parts from 1 to 40,000 lb. Castech produces over on ... e hundred different alloys such as mild steel, alloy steel, stainless steel, manganese steel, grey iron, ductile iron, white iron and abrasion resistant iron. With our strategic alliance with Plessitech, we also offer complete machining and assembly services. Our main product is the Dipper for electric-cable shovels such as Bucyrus and P&H. read more