WP321 / WP321H Technical Specifications
| Parameter | Specification Detail |
|---|---|
| Material Grade | UNS S32100 (WP321) / UNS S32109 (WP321H) |
| Design Standard | ASME B16.9, B16.11, B16.5, EN 1092-1, GB/T, SH, HG |
| Pressure Class | ASME Class 150 - 2500; European PN6 - PN320 |
| Size Range | DN15 - DN1500 (1/2" - 60"), larger for bespoke designs |
| Sensitizing Temperature Range | 427°C - 816°C (800°F - 1500°F) |
| Certification | PED, AD2000, DNV, ABS, BV, ISO |
Specification Range
Comprehensive Sizing, Customized Solutions: Meeting International Standards and Bespoke Demands Backed by 35 years of specialized forging and precision machining expertise, Jiangyin Gaoxin Pipe Fittings Co., Ltd has established an extremely extensive product specification system for WP321/321H. Our manufacturing capability is designed to meet the full spectrum of demands for large-scale engineering projects worldwide. We produce a complete series of forged fittings, flanges, and non-standard components ranging from (Nominal Diameter) DN15 to DN1500 (1/2" - 60"). Our product pressure ratings cover ASME Class 150 to Class 2500, European Standards PN6 to PN320, and various high-pressure, bespoke designs. With our advanced in-house equipment, including CNC ring rolling machines, heavy-duty hydraulic presses, and precision (CNC machine tools), we can supply finished products certified to rigorous standards such as ASME B16.9, B16.11, B16.5, EN 1092-1, as well as Chinese standards GB/T, SH, and HG. For custom products with special dimensions, tighter tolerances, or complex geometry, our mature engineering team can provide near-net shape forging and precise finish-machining according to customer-supplied drawings. This minimizes material waste while ensuring the highest level of dimensional accuracy and grain structure integrity across our entire specification range.
High-Temperature Safety Barrier: Five Core Commitments of Jiangyin Gaoxin WP321/321H
Choosing Jiangyin Gaoxin's WP321/321H fittings is an investment in a robust high-temperature safety barrier, ensuring the long-term, stable operation of critical pressure equipment. Our products offer five core commitments.
- Intergranular Corrosion Resistance: they deliver exceptional resistance to intergranular corrosion, maintaining structural integrity even under sensitizing conditions, thus eliminating the risk of stress-corrosion cracking.
- Enhanced Creep & Rupture Strength: the enhanced WP321H high-carbon version provides outstanding creep and rupture strength, crucial for maintaining mechanical stability above 600°C.
- Structural Stability Under Thermal Cycling: through our rigorous stabilization annealing process, we guarantee excellent structural stability, allowing the fittings to withstand repeated thermal cycling and complex stress states without degrading.
- Oxidation & Carburization Resistance: superior resistance to oxidation and carburization allows our products to perform reliably in severe carburizing environments, such as those found in the refining and metallurgical industries.
- Full Traceability & NDT Assurance: through our comprehensive traceability mechanism, stringent chemical analysis—especially the precise control of the Titanium-to-Carbon ratio—and robust Non-Destructive Testing (NDT), we ensure unwavering quality consistency for every single WP321/321H fitting. This high level of high-temperature security minimizes the risk of unplanned shutdowns and upholds our brand commitment of "Extreme Heat security."
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