ASTM A403 WP316L Stainless Steel Reducing Tee Butt Weld ASME B16.9 1/2" to 24" SCH40S Low Carbon Seamless
ASTM A403 WP316L Low Carbon Stainless Steel Reducing Tee
TOBO supplies ASTM A403 WP316L low carbon stainless steel reducing tees, the welding-optimized variant of 316. With maximum carbon content of 0.03%, WP316L eliminates the risk of intergranular corrosion after welding without requiring post-weld heat treatment, making it the ideal choice for field-fabricated piping systems in corrosive service.
Product Description
- Product: Stainless Steel Reducing Tee - Low Carbon Grade
- Material Grade: ASTM A403 WP316L (UNS S31603 / 1.4404)
- Size Range: 1/2" - 24" (DN15 - DN600) Seamless
- Wall Thickness: SCH10S, SCH40S, SCH80S, SCH160, STD, XS, XXS
- Type: Reducing Tee, Seamless Butt Weld
- Standards: ASME B16.9, ASME B16.11, ASME B16.28, MSS SP-43
WP316L Chemical Composition
| Element | C | Mn | Si | Cr | Ni | Mo | P | S |
|---|---|---|---|---|---|---|---|---|
| WP316L (%) | ≤0.035 | ≤2.00 | ≤1.00 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | ≤0.045 | ≤0.030 |
Why Choose WP316L Over WP316?
| Feature | WP316L | WP316 |
|---|---|---|
| Carbon Content | ≤0.035% (Low Carbon) | ≤0.08% |
| Post-Weld Sensitization | Not Susceptible | Possible in heavy sections |
| Post-Weld Heat Treatment | Not Required | Recommended for thick sections |
| Intergranular Corrosion Test | Passes as-welded (ASTM A262) | Requires annealed condition |
| Field Welding | Ideal | Good with precautions |
Key Advantages
- Weld Without Worry: Low carbon eliminates chromium carbide precipitation risk during welding, no post-weld heat treatment needed
- As-Welded Corrosion Resistance: Maintains full intergranular corrosion resistance in the as-welded condition per ASTM A262 Practice E
- Field Fabrication Friendly: Ideal for construction projects where post-weld annealing is impractical or impossible
- Full Molybdenum Benefits: Retains all the pitting and crevice corrosion resistance advantages of WP316 with added weldability
- Dual Certified Availability: Can be supplied as WP316/316L dual certified for maximum flexibility
Applications
Field-fabricated chemical piping, offshore platform process piping, pharmaceutical clean systems, semiconductor gas distribution, food and beverage processing lines, brewery and dairy piping, water injection systems, fire water ring mains
Reducing Tee Dimensions Reference
| Run x Branch | DN | Run OD (inch) | Branch OD (inch) | Center to End (inch) |
|---|---|---|---|---|
| 2" x 1" | 50 x 25 | 2.375 | 1.315 | 2.50 |
| 3" x 2" | 80 x 50 | 3.500 | 2.375 | 3.38 |
| 4" x 2" | 100 x 50 | 4.500 | 2.375 | 4.13 |
| 4" x 3" | 100 x 80 | 4.500 | 3.500 | 4.13 |
| 6" x 4" | 150 x 100 | 6.625 | 4.500 | 5.63 |
| 8" x 6" | 200 x 150 | 8.625 | 6.625 | 7.00 |
| 10" x 8" | 250 x 200 | 10.750 | 8.625 | 8.50 |
| 12" x 10" | 300 x 250 | 12.750 | 10.750 | 10.00 |
Packing: Standard Shipping Package | H.S Code: 73072300
Contact TOBO for SS316L reducing tee quotations and factory lead times.
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