Seamless Pipe Tee – Integrated High‑Strength Solution for High‑Pressure & High‑Temperature Piping
Definition & Manufacturing Process
A seamless pipe tee is a one‑piece fitting manufactured from a seamless tubular billet via hot extrusion or cold drawing, used for 90° or 45° equal/reducing branch connections in piping systems.
Process Flow:
Billet preparation – Continuous cast or rolled round billet matching parent pipe material.
Piercing – Formed into a thick‑wall hollow shell at 1100–1250℃.
Tee forming –
Hot extrusion: Hydraulic press with dedicated tooling.
Cold drawing: Multiple passes for tight tolerances.
Heat treatment – Normalizing, annealing, or solution annealing (for stainless steels).
Finishing & NDT – Straightening, beveling, 100% non‑destructive testing.
Size Range
NPS: 1/2″ – 24″
Schedule: SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH120, SCH160, XXS
Type: equal, reducing
Performance Comparison – Seamless Tee vs. Welded Tee
| Feature | Seamless Tee | Welded Tee |
|---|---|---|
| Structural integrity | No weld seam | Longitudinal or girth weld |
| Pressure capacity | High (up to Class 2500) | Medium‑low |
| Fatigue life | >10⁶ cycles | <10⁵ cycles (crack initiation) |
| Corrosion resistance | Uniform material | Weld zone preferential attack |
| Internal roughness | Ra ≤ 6.3 μm | Ra ≥ 12.5 μm (with weld reinforcement) |
| Temperature range | -196℃ ~ 600℃ | Limited by weld metal & PWHT |
Technical Advantages in Detail
Continuous grain flow – Metal fibers follow the tee contour, improving burst pressure by 15–20% compared to welded tees of the same wall thickness.
No heat‑affected zone (HAZ) – Uniform microstructure across the entire fitting, eliminating local embrittlement or softening.
Optimized crotch thickness – FEA‑based design ensures extra safety at the branch‑run intersection while minimizing weight.
Company Commitment
200+ standard sizes in stock; 48‑hour lead time for NPS 14″ and below.
Custom non‑standard wall thickness & dual certification (ASME + PED) available.
Full life‑cycle traceability dossier (digital + hard copy).
Choose seamless tees – eliminate the weakest link from your piping system.
Our address
Rm1406, 14th/F Legu Business Center, Xihu Ave,Hongqi Rd, Nankai Dist, Tianjin City, China
whatsapp Number
0086 18233409873
lucky@tjshenzhoutong.com
Hot Tags: seamless pipe tee, China seamless pipe tee manufacturers, suppliers, factory, gate valve for pipe fittings, industrial pipe fittings, Pipe Elbow, pipe fitting generators, pipe fitting purifiers, union pipe fittings
