We, Bansuk STC (Spinning Technology Co., Ltd. ) was founded in 1981 and had developed unique Metal Spinning Machines to manufacture Expansion Joint of thick wall palte and other spinning parts by own technology. Our Metal Spinning Technology had been approved in its excellence to acquire the Utility Model Patent in 1984 and the Patent in 2007 from KIPO and also got excellent reputation by various customers in domestic and abroad since that time. Main products are Expansion Joint, Bell Mouth, Eccentric/Concentric cone, Jacket and Fan Ring for Heat Exchangers and Pressure Vessels, Steam Guide for Steam Turbines, and Diffuser for Gas Turbines. We can manufacture the Expansion Joint of 36mm thick with 8 meters in diameter 2 meters in height. Similar capacities are applicable to other products. If you need spinning works of more thick plate than 36mm, we can serve you with our New Technology.