Cold drawing tee

Cold drawing tee - is a head and a small branch pipe, obviously, the size of the two big is competent, indirectly from a small size is the branch, in pure oxygen pipeline, usually have pressure, then the activity of oxygen is bigger; If use cold drawn three links, as long as tube sundries in the oxygen flow moves, because the pipe diameter change, flow rate changes may cause debris collisions with the pipe produced by fire or for velocity variation is produced with electrostatic discharge, are likely to cause fire in the pure oxygen tube.

The method of processing the three - pass pipe is: to mark the pipe in the process of processing cold drawing, and to wear the mark.

The equipment for the installation of the top out device of the pipe, including metal rod, top compressor, commutator, bracket, etc. When the metal rod is heated and the jack and metal rod are used, the material of the pipe wall will naturally turn out the cold-drawn three-way blank. Then weld the pipe section of the corresponding length of the corresponding length to the top

The cold drawing of the three - pass hair blank to produce the product.

The three exports have the same caliber, the equal diameter tee, and the two are the same size, the middle of the three, called the three - pass. Implement GB/T12459-2005. It is made of carbon steel, alloy steel and stainless steel.

The difference between cold drawn tee and hot pressure tee

By cold drawing tee production process can be seen that the cold drawing tee without substrate heating, entirely by liquid pressure will become a branch pipe, pipe spare tube extrusion tube body in the process of its forming was very stress, internal stress change and matrix, the internal stress is larger, but the thickness of the head and shoulders slightly cold tee increases, its bearing capacity is improved. On the application materials, cold drawing tee mainly use good quality material is relatively soft liquid materials, such as low carbon steel, stainless steel, low alloy steel, etc., and the existing of the calibre of the cold drawing tee for DN400, so usually used in cold drawn tee DN400 scope of the following materials (such as low carbon steel, stainless steel, low alloy steel liquid better material), the thickness of the product is not too thick, cold drawing tee products to more than nominal stress too much, in use process makes the internal stress change and produce damage. By hot-pressing tee forming process, the hot-pressing t production process has been treated with heating, heating the internal stress in the process of gradually disappear, and the material liquidity increases, and hot pressing tee or general application in the high-pressure alloy pipe fittings is large thick wall pipe.

Hydraulic tee is along with the development of science and technology, the pressure of press ability gradually. The product, can replace part of the small diameter, the low pressure tee products, improve the production efficiency of the three links and reduces the production cost of pipeline and equipment. And the heat pressure tee in the high pressure, the alloy pipeline still has the indispensable position!