Product name: Sewing-machine-parts Material: Grey iron 250, GG25, EN-GJL-250 (EN-JL1040), FC250 Production process: Sand casting, annealing, precision machining, shell molding casting, resin sand casting, sand blasting Production facility: Automatic molding line, Disa vertical molding line, Japan Tokyo horizontal molding line, resin sand molding line, shell molding line Maximum flask size: 2000mm x 2000mm x 1000mm 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