China ISO 9001 DIN/ANSI/JIS Standard Sprockets Industrial Gear Teeth Rack Bevel Stainless Transmission Drive Part Carbon Steel Roller Chain Sprocket sprocket company

Item Description  Product DescriptionWarmth treatment methodHarden teeth, tempering, quechingFloor therapyzinc plated, blacken, phopharization, carborizedProcedureForging( casting)—lathe- tooth shaping—finishing—oil washing—Packing ,made by CNC...