GB elbow, elbow non-standard, German standard elbow, ship standard you still can not find good elbow pipe fittings to worry about it? ! ! If you worry I just want to say: Please contact me! ! ! Sales Manager: Wang welcome to consult the National Order Tel :0311-68031627 15373637303 QQ: 2015693327 tee price, wholesale carbon steel elbow, pipe manufacturers, pipe plant Cangzhou En Ti 24-hour reception you soon stamping elbow is the earliest used in forming process of production of seamless elbow, the common specifications of the elbow has been the production of hot push method or replaced by other forming process, but in some specifications for production of a small number of bends in the wall thickness is too thick or too thin. Products with special requirements are still in use. Press forming using the elbow equal to the outer diameter of the elbow tube, using a press molding in a mold by direct compression. Before stamping, tube placed in the lower mold, the inner core and the end of the mold into the tube, the upper die downward movement began repression by the constraints of the outer mold and the inner mold forming the supporting role of the elbow. Process compared with the hot push, press molding appearance quality than the former; stamping elbow outside the arc during the molding in a stretched state, no other parts of the excess metal to compensate, so at the outer arc thinning wall thickness of about 10% . However, for single-piece production and low cost, it is used for stamping elbow process small quantities, thick-walled elbow manufacturing. Stamping elbow of cold stamping and hot stamping are two, usually based on material properties and equipment, the ability to choose cold stamping or hot stamping. Elbow cold extrusion forming process is to use a dedicated elbow forming machine, the tube into the outer mold, the upper and lower mold clamping after putter, driven along the inner tube and the outer mold mold reserved gap forming process to complete the movement. Cold extrusion process using internal and external mold manufacturing elbow appearance, uniform thickness, size deviation is small, so especially for thin-walled stainless steel elbow stainless steel elbow forming multi-use of this process. This process uses high precision internal and external mold; tube wall thickness deviation for the more demanding requirements.