... diameter 140-800mm, Our factory is specialized in processing and production of forged products, can produce free forging, die ... slewing ring , mold, flanges, shafts, bearings, bearing rings, rolling blade, bar, and a variety of forging trunnion diameter from 50-1500mm ... , including round steel diameter 140-800mm, and 12 meters in length can produce . Products, quality assurance ...