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ASTM A403 WP347H Niobium Stabilized High Carbon Stainless Steel Equal Tee Butt Weld Fitting

  • ASTM A403 WP347H Niobium Stabilized High Carbon Stainless Steel Equal Tee Butt Weld Fitting
  • ASTM A403 WP347H Niobium Stabilized High Carbon Stainless Steel Equal Tee Butt Weld Fitting
  • ASTM A403 WP347H Niobium Stabilized High Carbon Stainless Steel Equal Tee Butt Weld Fitting
  • ASTM A403 WP347H Niobium Stabilized High Carbon Stainless Steel Equal Tee Butt Weld Fitting
  • ASTM A403 WP347H Niobium Stabilized High Carbon Stainless Steel Equal Tee Butt Weld Fitting
Place of Origin Shanghai,China
Brand Name TOBO
Certification ISO/TUV/SGS
Model Number Stainless Steel Tee
Minimum Order Quantity 1PC
Price Negotiable
Packaging Details Standard Shipping Package
Delivery Time 15-30 Workdays
Payment Terms T/T,Western Union
Supply Ability 10 Ton/Month
Product Details
Material ASTM A403 WP347H / UNS S34709 (Nb Stabilized High Carbon 347) Standard ASME B16.9, ASME B16.11, ASME B16.28, MSS SP-43
Size Range 1" - 36" (DN25 - DN900) Service Temperature Up To 870°C (1600°F) Continuous
Highlight

Niobium Stabilized WP347H Tee

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High Carbon Creep Resistant Fitting

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Elevated Temperature Equal Tee
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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"251.3150.1330.1791.50
2"502.3750.1540.2182.50
3"803.5000.2160.3003.38
4"1004.5000.2370.3374.13
6"1506.6250.2800.4325.63
8"2008.6250.3220.5007.00
10"25010.7500.3650.5008.50
12"30012.7500.3750.50010.00
14"35014.0000.3750.50011.00
16"40016.0000.3750.50012.00
18"45018.0000.3750.50013.50
20"50020.0000.3750.50015.00
24"60024.0000.3750.50017.00
30"75030.0000.375-20.00
36"90036.0000.375-24.00
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.
Tags:

steel pipe tee

butt weld tee

stainless steel pipe tee