As the leading supplier of welding stud(shear connector, threaded stud, unthreaded stud, threaded stud with reduced shaft) and stud welding machine(inverter drawn arc stud welding machine, thyristor drawn arc stud welding machine, capacitor discharge stud welding machine), we are implementing more than 50% steel projects in China and other since 1998, including the stunning landmark building “Bird Nest” National Stadium for Summer Olympic Games in 2008, which is the world’s largest steel structure with 26km of unwrapped steel used. E-mail: info@sinostoneltd.com