cold-drawn tee

Cold-drawn tee is a type of tee fitting, consisting of a main pipe and a small branch pipe. It gets its name because the tonnage of equipment required for material forming is reduced by heating the material before pressing the tee. It is used for precision cold-drawn seamless pipes with high dimensional accuracy and good surface finish in mechanical structures and hydraulic equipment.

In pure oxygen pipelines, which are generally pressurized, oxygen has a stronger activity. The use of cold-drawn tees can prevent fire sources caused by collisions between debris inside the pipe and the pipe wall when the debris moves with the oxygen flow and the flow velocity changes, or electrostatic discharge caused by flow velocity variations, which may lead to ignition of the pure oxygen pipeline.

The processing method for cold-drawn tee fittings is as follows: mark the position on the pipeline where the cold-drawn tee is to be processed, and pierce the marked area. Install an outlet device on the pipeline, which includes metal components, a pressing device, a diverter, a support frame, etc. Heat the metal rod; when the jack and metal rod are used to push outward, the pipe wall material naturally turns outward to form a cold-drawn tee blank. Then weld a pipe segment of a specified length and corresponding specification to the extruded cold-drawn tee blank to produce the finished product.

Our company specializes in producing: national standard tees, non-standard tees, special-shaped tees, American standard tees, German standard tees, etc.; various carbon steel straight-seam seamless tees, straight-seam tees, and thick-wall tees.

In addition, our factory can design and produce various complex tee fittings, including same-diameter oblique tees and reducing oblique tees at any angle. Materials include carbon steel, Q235, 20#, A105, 16Mn, etc.

Specific dimensions can be referred to the dimension reference tables for tees and crosses.