Butt welding tee also name is large diameter tee, steel hot-pressing molding or bend forging forming, its connection form is directly to the tee and steel pipe butt welding, butt welding three links of the main manufacturing standards are generally GB/T12459, GB/T13401, ASMEB16.9, SH3408, SH3409, HG/T21635, HG/T21631, SY/T0510.

Butt welding tee is a director and a small branch pipe, obviously, the size of the two big is competent, indirectly from a small size is manifold. In pure oxygen pipeline, generally is stressed, the more active oxygen; 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.

Welded tee is steel hot-pressing molding or bend forging forming, its connection form is directly to the tee and steel pipe butt welding, butt welding three links of the main manufacturing standards are generally GB/T12459, GB/T13401, ASME B16.9, SH3408, SH3409, HG/T21635, HG/T21631, SY/T0510.

The process of welding three pipe fittings is: the pipe shall be marked in the process of processing cold drawing, and the marking shall be worn.

Special equipment for welding three pipe fittings: the installation of the top out device on the pipe, including metal, top pressure, 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 welding the pipe section of the corresponding specification in a certain length shall be welded on the top of the welded three-way blank to produce the final product.

Three pass parameters:

Production standard: national standard, American standard, daily standard, British standard, German standard, etc.

Material specification: stainless steel, carbon steel, low alloy steel, alloy steel, etc.

Applicable media: gas, liquid, steam.

Connection: welding (welding) type.