Pipe tee manufacturing process: hydraulic bulging and hot pressing forming

Hydraulic bulging and hot pressing are two common manufacturing process for pipe tee.The two manufacturing process of pipe tee as follows:

The hydraulic bulging manufacturing process of pipe tee:

The hydraulic bulging of tee is a forming process in which the branch pipe is expanded by the axial compensation of the metal material.

(1) using a special hydraulic machine to inject a liquid into the tube blank equal to the tee diameter,

(2) Squeeze the tube blank by synchronous centering of the two horizontal side cylinders of the hydraulic machine,the volume of the tube blank becomes smaller after being squeezed,and the liquid in the tube blank becomes smaller as the volume of the tube blank becomes smaller,and the pressure rises.

(3) When the pressure required for the tee branch pipe is reached, the metal material flows along the cavity of the mold under the double action of the liquid pressure in the side cylinder and the tube blank to swell out of the branch pipe.

Tee’s hydraulic bulging process can be formed at one time,with high production efficiency;tee’s main pipe and shoulder wall thickness are increased.

The hot press forming process of pipe tee:

(1) a tube blank larger than the tee diameter is flattened to a size of a tee diameter,and a hole is opened at a portion of the tension branch pipe;

(2) the tube blank is heated, placed in a forming mold,and a die of the tensile branch pipe is loaded into the tube blank;

(3) The tube blank is radially compressed under the action of pressure,and the metal flows toward the branch pipe during the radial compression and forms a branch pipe under the drawing of the die.

Hot pressing tee has wide adaptability to materials,and is suitable for low carbon steel,alloy steel,and stainless steel materials;especially tee with large diameter and thick wall,which is usually used.

Haihao Group supply pipe tees more than 30 years,our pipe tees contain equal tee,reducing tee,lateral tee,barred tee,straight tee.We manufacture the products in different standards such as ANSI/ASME B16.9,ANSI/ASME B16.28,ANSI/ASME B16.11,GOST 17376,EN 10253-2,DIN,JIS,etc.If you want to know more about piping products(steel pipes,butt welding pipe fittings,forged pipe fittings and flanges),please email us:sales@haihaogroup.com