421 Stainless Steel Flange
As premium martensitic stainless steel components, our 421 flanges deliver exceptional performance for piping systems. Engineered with strict dimensional precision and robust material properties, they ensure secure, leak-proof connections for demanding industrial applications.
Core Specifications
| Attribute | Specification |
|---|---|
| Material Grade | 421 Martensitic Stainless Steel |
| Type | Slip-On, Weld Neck, Blind (Customizable) |
| Size Range | DN15-DN300 (1/2" - 12") |
| Pressure Class | PN10-PN40, Class 150-Class 300 |
| Surface Finish | Polished (Ra ≤ 0.8μm), Pickled & Passivated |
| Standards | Compliant with ASTM A182, GB/T 9112-2010 |
Key Performance Advantages
Superior Strength: Tensile strength ≥ 700MPa and high hardness (HRB ≥ 200) for heavy-load piping systems.
Reliable Corrosion Resistance: Resists atmospheric moisture, mild acids, and alkalis, suitable for indoor/outdoor use.
Leak-Proof Sealing: Precision-machined sealing faces ensure tight connections, minimizing fluid leakage risks.
Easy Installation: Compatible with standard piping components, simplifying assembly and maintenance.
Application Fields
Ideal for piping systems in:
Industrial manufacturing (chemical, petrochemical, power plants)
Mechanical engineering (hydraulic/pneumatic systems)
Automotive industry (engine cooling, exhaust systems)
Water treatment and HVAC systems
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