20CrMo, 30CrMo, 35CrMo, 42CrMo, 40Cr, 41Cr4,38CrMoAl, 20CrNiMoA, 40CrNiMoA Shanghai Cheng Dong Industrial Co., Ltd. specializes special steel materials, materials widely used in automobiles, machinery, tools, construction, metallurgy, shipbuilding, bridges, metal, military and other industries; relying on the mill senior technical engineers and the advantages of resources, users can develop new products, to buy special steel material to provide science-based solutions and technical support services. Alloy steel bar and steel 20CrMo, 30CrMo, 35CrMo, 42CrMo, 40Cr, 41Cr4,38CrMoAl, 20CrNiMoA, 40CrNiMoA etc; perennial with round Φ8-Φ600, steel 2.0-200mm stock, and cut retail, professional processing and heat treatment all kinds of machining.