... Socket Welding, Threaded, Lap Joint and Plate etc.Pressure Ratings:Class 150, 300, 600, 900, 1500, 2500 Pressure Ratings: ... sheet-metal processing equipment and detection equipment, which is capable of producing various flanges, forgings and rings below Φ2000.We ... have the whole quality control system which covers every process of the manufacturing-Raw material inspection, cutting, heating, gorging, ...