ASTM A403 WP321/321H Stainless Steel Stub Ends Lap Joint Butt Weld 2 Inch to 60 Inch SCH40S SCH160S
Titanium-stabilized ASTM A403 WP321/321H stainless steel stub ends specifically engineered for elevated temperature service up to 900°C. The titanium addition prevents intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 425-850°C, making these stub ends the preferred choice for high-temperature piping systems.
- Titanium Stabilized: Prevents chromium carbide precipitation during welding and high-temperature exposure, eliminating intergranular corrosion risk
- High Temperature Performance: WP321H carbon-controlled grade optimized for service temperatures up to 900°C (1650°F)
- Large Diameter Range: Available up to 60 inch for major industrial piping installations
- Heavy Wall Capability: SCH160S for high-pressure elevated temperature applications
- Certified Quality: ISO, TUV, SGS certified with elevated temperature mechanical test reports
| Parameter | Specification |
|---|---|
| Material Standard | ASTM A403 |
| Material Grade | WP321, WP321H |
| Size Range | 2" - 60" (DN50 - DN1500) |
| Wall Thickness | SCH40S, SCH80S, SCH160S |
| Type | Lap Joint / Butt Weld |
| Standard | ASME B16.9, MSS SP-43 |
| Max Service Temp | 900°C (1650°F) |
Designed for high-temperature refinery piping, petrochemical furnace tubes, thermal oxidizers, exhaust systems, heat treatment furnaces, power generation boiler components, and any application where sustained elevated temperature exposure is expected.
Standard shipping package with protective end caps. Delivery within 15-30 workdays from order confirmation. Supply capacity: 10 tons per month. Custom fabrication available on request.
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