Dongguan City, Xu-feng Hardware Products Factory is a professional manufacturer of metal springs, lathe parts and stamping parts of the enterprise, the factory has advanced technology and equipment springs, modern factories and professional personnel, products sold around the world. English name for the disc spring washers Heavy Duty Bolting Washers, or call DISC WASHER; the difference between ordinary disc springs for the bolts connecting bolt connection strength of 8.8 and above; common mechanical surface treatment galvanized (Rui Yi white zinc metal production machinery compressed gas spring, yellow zinc); there dacromet, phosphate and some other way; in fact, the most commonly used abroad, the most common is the mechanical plating, because the first mechanical galvanized corrosion resistance strong, and no hydrogen embrittlement of the elastic member 6796 such better; and Dacromet surface coating thickness is not enough due to a spring toy, in the installation and subsequent use, the corrosion resistance of 800 hours far less than the nominal battery Spring, 1000 hours so routine in about three to five years would rust; in German-owned enterprises such as formal, ABB, SIEMENS and other companies, mechanical galvanized surface protection necessary for DIN6796 way;! ! Dongguan City, Xu-feng Hardware Products Factory is a professional manufacturer of metal springs, lathe parts and stamping parts of the enterprise, the factory has advanced technology and equipment, modern workshops and professional personnel, products sold around the world. [Product range] of various materials of CNC automatic car parts; Surface treatment products are SGS environmental certification. Professional production (stainless steel, copper, iron, aluminum) high strength precision machine screws, self-tapping screws, 1.30 screws, wood screws, thumb screws, carriage bolts, special screws; bolt, rivet, rivets, toys axle, shaped shaft; locknut, cap nut, four claws nut, square nut, wing nut; washers, elastic washers, external tooth washers, internal tooth washers, special washers, snap ring; pressure springs, torsion springs, tension springs , springs and other metal buckle shaped non-standard parts, stamping parts, lathe parts. And in accordance with the special requirements of customers and design and manufacturing. Toys spring, spring, Xu-feng Hardware Factory provided by Dongguan City Xufeng Hardware Products Factory. Dongguan City, Xu-feng Hardware Products Factory (www.dglijing168.com) strong, credible, in Dongguan, Guangdong spring industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xufeng Hardware Factory and you hand in hand into the brilliant, for a better future!