welding studs, welding stud, M10-M25, L1=50-200CM standard:ISO,DIN,BS,AS,ASTM,ANSI,JIS Spec.: M16-M30 & 1/2"-1 1/2" welding studs, welding stud.we can produce them by ISO, GB/T, DIN, BS, JIS, ASI. The surface treatmentand the packet can by the customer's requirement.M10-M25, L1=50-200CMCeramic ferrule included. arc welding studs