I come from Wuhan Linmei Head Manufacturing Co., Ltd. This company is the top manufacturer of elliptical heads, spherical heads, torispherical heads, conical heads, flat bottom heads and other heads in China. 1.stainless steel head;2.Dish head;3.hemisphere head;4.elliptical head;5.Cone head;6.flat head;7.spherical head;8.Expansion joint;9.Annealing Arifaets;10.Flange;11.Pressure vessel Technics:Forged Connection:Welding Shape:Equal material:hemisphere heads Reduction ratio:about 10% Technology:Hot pressing,cold pressing