| Products | 3 inch stainless steel tee |
| Standard |
ASTM A403 |
| Steel Grade | WP304,WP304L,WP316,WP316L,WP321 etc |
3 inch stainless steel tee production steps：
Preparation stage: Firstly, based on the user's order requirements and the company's production plan, prepare stainless steel pipe materials for cutting operations. Use a fully automatic laser cutting machine to cut off pipes and collect residual debris and scraps into containers.
Water swelling molding: Place the cut straight pipe on the mold of the water swelling machine and use water pressure to form a drum suitable for clamping.
Punching: Place the pipe material in the punching machine, and the drill bit will automatically open the hole.
High frequency heating: Use a high-frequency heating machine to continuously quench the punched hole and increase its toughness.
Pulling: Place the heated tube material in the drawing machine and use steel ball pressure to extend the hole.
Flat mouth: Put the pipe material into the flat mouth machine and remove the burrs on the port.
Argon arc welding: First perform spot welding, and then use an argon arc welding machine to perform ring welding on the pipe material.
Cleaning: Place the pipe fittings neatly into the ultrasonic cleaning machine for blind spot cleaning.
Bright solution annealing: Place thin-walled stainless steel tee fittings into an annealing device and add protective gas (hydrogen) to increase their toughness and prevent them from rebounding when clamped.
Polishing and Grinding: Place the thin-walled stainless steel tee fittings after solution annealing into a polishing machine, add ceramic steel balls, and perform fine polishing and grinding.
Install sealing rings: Use regular EPDM sealing rings and install them according to national standards.
Pipe fitting test: Conduct water pressure test, air tightness test, pressure resistance test, negative pressure test, drawing test, hot and cold water circulation test, water pressure vibration test, pressure impact test, etc.
Spray code labeling packaging: Pack the thin-walled stainless steel tee fittings that have been produced and inspected individually with plastic film, and then put them into large cardboard boxes for secondary packaging to avoid scratches and affect their appearance.
Due to the large equipment tonnage required for the hydraulic bulging process of 3 inch stainless steel tee production steps, it is mainly used in China for the manufacturing of standard wall thickness stainless steel tees smaller than DN600. Its applicable forming materials are low carbon steel, low alloy steel, stainless steel with relatively low cold work hardening tendency, including some non-ferrous metal materials such as copper, aluminum, titanium, etc.
According to manufacturing standards, it can be divided into national standards, electrical standards, water standards, American standards, German standards, Japanese standards, Russian standards, etc., as follows: GB/T12459, GB/T13401,ASME B16.9,SH3408, SH3409,HG/T21635,DL/T 695,SY/T 0510,DIN 2615.
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