ASTM A403 WP347H Niobium Stabilized High Carbon Stainless Steel Equal Tee Butt Weld Fitting
Price:
Negotiable
MOQ:
1PC
Delivery Time:
15-30 Workdays
Brand:
TOBO
Product Description
ASTM A403 WP347H Niobium Stabilized Stainless Steel Equal Tee High Carbon Butt Weld ASME B16.9 1" to 36" SCH40S
ASTM A403 WP347H Niobium Stabilized Stainless Steel Equal Tee - High Carbon Grade
TOBO supplies ASTM A403 WP347H niobium (columbium) stabilized stainless steel equal tees for elevated temperature applications. The higher carbon content combined with niobium stabilization provides superior creep strength and oxidation resistance at temperatures exceeding 540°C (1000°F), making it the preferred choice for high-temperature boiler and pressure vessel piping systems.
Product Specifications
- Product: Stainless Steel Equal Tee - WP347H High Carbon
- Material Grade: ASTM A403 WP347H (UNS S34709 / 1.4912)
- Size Range: 1" - 36" (DN25 - DN900)
- Wall Thickness: SCH10S, SCH40S, SCH80S, SCH160, STD, XS, XXS
- Type: Equal Tee, Seamless / Welded Butt Weld
- Standards: ASME B16.9, ASME B16.11, ASME B16.28, MSS SP-43
WP347H vs WP347 Chemical Comparison
| Grade | C (%) | Cr (%) | Ni (%) | Nb+Ta (%) | Key Feature |
|---|---|---|---|---|---|
| WP347 | ≤ 0.08 | 17.0-20.0 | 9.0-13.0 | 10*C min - 1.00 max | Standard niobium stabilized |
| WP347H | 0.04-0.10 | 17.0-20.0 | 9.0-13.0 | 8*C min - 1.00 max | Enhanced high-temperature creep strength |
Key Advantages
- Superior Creep Resistance: Higher carbon content than WP347 provides enhanced creep rupture strength at elevated temperatures above 540°C
- Niobium Stabilization: Prevents intergranular corrosion from chromium carbide precipitation during welding and service
- Extended Service Life: Ideal for continuous high-temperature operations where standard 304H and 316H grades reach their limits
- Full Documentation: EN 10204 3.1 / 3.2 material certification with full chemical and mechanical test reports available
- ASME Code Compliance: Suitable for ASME B31.1 and B31.3 pressure piping applications
Applications
Power plant superheater and reheater tubing, refinery heater tubes, high-temperature chemical reactors, ethylene cracking furnaces, steam headers, boiler pressure parts, catalytic reformer units, gas turbine exhaust systems
Equal Tee Dimension Table
| Nominal Size | DN | OD (inch) | SCH40S Wall | SCH80S Wall | Center to End (inch) |
|---|---|---|---|---|---|
| 1" | 25 | 1.315 | 0.133 | 0.179 | 1.50 |
| 2" | 50 | 2.375 | 0.154 | 0.218 | 2.50 |
| 3" | 80 | 3.500 | 0.216 | 0.300 | 3.38 |
| 4" | 100 | 4.500 | 0.237 | 0.337 | 4.13 |
| 6" | 150 | 6.625 | 0.280 | 0.432 | 5.63 |
| 8" | 200 | 8.625 | 0.322 | 0.500 | 7.00 |
| 10" | 250 | 10.750 | 0.365 | 0.500 | 8.50 |
| 12" | 300 | 12.750 | 0.375 | 0.500 | 10.00 |
| 14" | 350 | 14.000 | 0.375 | 0.500 | 11.00 |
| 16" | 400 | 16.000 | 0.375 | 0.500 | 12.00 |
| 18" | 450 | 18.000 | 0.375 | 0.500 | 13.50 |
| 20" | 500 | 20.000 | 0.375 | 0.500 | 15.00 |
| 24" | 600 | 24.000 | 0.375 | 0.500 | 17.00 |
| 30" | 750 | 30.000 | 0.375 | - | 20.00 |
| 36" | 900 | 36.000 | 0.375 | - | 24.00 |
Additional Information
- Packing: Plywood case or pallet
- H.S Code: 73072300
- NDT Available: UT, RT, PT, PMI
Contact TOBO for WP347H high-temperature stainless steel fitting inquiries and competitive pricing.
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Company
TOBO STEEL GROUP CHINA
Location
2F,Building7,Baolong Center,No.689,Xiwang Road,Jiading District,Shanghai,201800,China
Contact Person
Joy Wang