February 25, Beijing, a large steel company, after the adoption of a number of domestic plug SNAIL column welder trial, the final selection of the "YIFA" brand two stud welding RSN-2500, dedicated to Φ22, Φ24 large diameter stud welding, mainly Chinese and "prone" welder, 1) can be a long continuous welding of large diameter studs, 2) a high degree of automation torch, torch hands-lift, not hot, strong and good welder comfort can replace imported gun use, 3) prone to after-sales service and good reputation, rest assured ease user after purchase items, units of the original two nails imported welding quality is relatively stable, but the torch and accessories often require maintenance and replacement, and the cost is high economic cost of large, leadership has decided to adopt after the company's loss-prone parts and torch.