Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering High Standard Construction & Marine Use Hot Dipped Galvanized HDG Threaded Rod Stud Bolt, Oilfield & Petrochemical Industry ASTM A320 L7 A193 B7m Coated Threaded Bar, Cheap Price M36 White Zinc DIN 2510 5.8 Continuous Thread Studs and so on.