Seamless elbow pipe fittings for a turn at. All fittings in piping systems and more in use, the largest proportion, about 80%. Typically, the thickness of the goods of different materials to select a different bend forming process. For now. Manufacturers commonly seamless elbow push hot forming process, stamping, extrusion, seamless elbow, also known as the English name of seamless steel seamless elbow elbow or seamless pipe elbow, seamless elbow pipe because of different manufacturing processes , is divided into hot-rolled (extrusion) two elbow pipe fittings and seamless cold drawn seamless elbow (rolled). Cold drawn (rolled) pipe is divided into two kinds of circular pipe and shaped pipe. Rolling seamless pipe elbows raw round tube, tube embryos to go through cutting a length of about one meter cutter blank, and by conveyor belt to the furnace heating. The billet is fed in the heating furnace, a temperature of about 1200 degrees Celsius. Fuel for hydrogen or acetylene. Furnace temperature control is a key issue. After the round tube came out to go through the pressure punching machine wear empty. Generally more common punch is tapered roller punching machine, punching machine such high production efficiency, product quality, perforated expanding capacity, can be worn a variety of pipe fittings. After perforation, round tube has been three-roll rolling, rolling or extrusion. To take off the tube after extrusion sizing. Sizing machine rotating at high speed into the embryo through a tapered drill steel perforated to form the tube. Pressing elbow, also known as seamless punching elbow or elbow, usually divided into 90 °, 45 ° and an angle of 180 °. Is a change in direction of the pipe fittings. With high-quality carbon steel, stainless steel and low alloy steel without acid suppression suppression elbow elbow pipe joints in a special mold pressing and forming.