Adopt high-quality stainless steel pipes that meet international pipeline fitting standards, including 304 and 316 stainless steel grades. Strictly inspect material composition, wall thickness uniformity, surface finish, corrosion resistance and internal metallographic structure to eliminate impurities, cracks and oxide defects. Qualified stainless steel raw materials are precisely cut into fixed-length standard blanks according to product specifications, ensuring consistent material performance and dimensional foundation for subsequent forming processing.
2.Hot Forging & Integral Forming:
Adopt precise constant-temperature hot forging technology to complete one-piece three-way integral forming of stainless steel blanks. Scientific heating and die forging ensure uniform metal fluidity, complete branch molding and compact internal structure. The seamless integral forming process eliminates welding seams and splicing gaps,greatly improving the overall pressure resistance, structural tightness and connection stability of the pipe fitting.
3.Trimming, Shaping & Press Groove Machining:
Thoroughly remove forging burrs, surface flashes and irregular edge residues.Conduct precise shaping and calibration to standardize tee geometric dimensions, flatness and verticality, ensuring smooth and flat inner and outer pipe walls. Precisely machine dedicated press-fit grooves at pipe ends according to industry specifications, with strictly controlled groove depth, radian and tolerance to achieve perfect matching with standard press tools and stainless steel pipes.
4.Precision Polishing & Surface Passivation:
Adopt multi-stage internal and external fine polishing process to remove machining traces, tiny scratches and oxide layers, forming a smooth and flawless pipe wall surface. The polished inner wall reduces fluid resistance, avoids medium residue and scale growth, and meets sanitary pipeline requirements. Professional acid washing and passivation treatment is carried out to reconstruct the dense protective film on the stainless steel surface,significantly enhancing long-term anti-corrosion and oxidation resistance.
5.Pressure Test & Strict Quality Inspection:
Conduct rigorous hydraulic pressure resistance test and air tightness leakage test to verify zero-leakage performance under rated working pressure. Implement full-range quality inspection including dimensional tolerance detection, groove precision test, wall thickness detection, surface defect inspection and material performance sampling test. All products are strictly screened to ensure stable pressure bearing capacity, reliable sealing performance and compliance with high-standard pipeline engineering requirements.
6.Marking, Packaging & Warehousing:
Mark qualified stainless steel press down tees with specification, material grade, execution standard and production batch information. Complete automatic sorting and counting, and adopt dust-proof, moisture-proof and anti-collision professional packaging to protect precision grooves and polished surfaces. Finished products are classified and stored in standardized warehouses and delivered after strict final inspection.