Product name:Transmission cover Material:Stainless steel 304, alloy steel 40Cr, 42CrMo, 16Mn, 35CrNiMo, carbon steel C45, 1010 Production process:Sodium silicate sand casting, annealing, normalizing, quenching, tempering, precision machining, shell molding casting, sand blasting, Available service: OEM,Design optimization, precision machining, heat treatment, cnc machining, milling, drilling. Painting, powder coating, electroless nickel plating. Zinc Plating, E-coating. HDG, hot galvanizing Unit Weight: 0.1kg-1000kg, 0.2lbs-2000lbs Size: According to drawing Customizable or not: Yes Packing: Carton, plywood cases, pallets Certificate: ISO9001:2008 Inspection report: Dimension report. Material report including chemical contents, tensile strength, yield strength and hardness. X-ray test report, Ultrasonic test report and Magnetic particle test available upon request. Origin: China