Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering ISO13918 Ceramic Ring Nelson Shear Studs 19 Carbon Steel Welding Stud, M42 High Tensile F1554 Gr55 Carbon Steel B7 Stud Bolt and Nuts Hot Dipped Galvanized Thread Rod Stud Bolts and Nuts, Dacromet Stud Bolt B7 M18 Full Thread Carbon Steel Grade 8.8 10.9 A193 B7 Stud Bolts and so on.