Stud welding belong to a kind of high-strength connected fasteners. The diameter of Stud welding is Ф10 ~ Ф25mm, and the total length before welding is 40 ~ 300 mm. The Stud welding has a logo on the top surface of the head - HW –to make the manufacturer's identification mark. The arc stud welding are suitable for high-rise steel frame construction, industrial plant construction, highways, railways, bridges, towers, automobiles, energy, transportation facilities construction, airports, stations, power stations, pipeline supports, lifting machinery andOther various steel structures and other projects.