Labdhi Metals is a leading manufacturer, stockist, and exporter of premium-quality Stainless Steel 321 Flanges, engineered to provide excellent performance in high-temperature and corrosive environments. Stainless Steel 321 is a titanium-stabilized austenitic stainless steel designed to resist intergranular corrosion after exposure to high heat, making it ideal for applications involving repeated thermal cycles. Labdhi Metals produces a full range of SS 321 flanges in standard and custom dimensions, suitable for critical industrial systems worldwide.
The titanium content in SS 321 prevents chromium carbide precipitation during welding, which protects the material from corrosion in the heat-affected zones. This property makes SS 321 flanges highly suitable for heat exchangers, boilers, furnace parts, exhaust systems, and chemical processing pipelines. Labdhi Metals fabricates flanges such as Weld Neck (WNRF), Slip-On (SORF), Blind (BLRF), Socket Weld, Threaded, and Lap Joint flanges, all manufactured under stringent quality norms.
Labdhi Metals ensures that its flanges are produced using the finest raw materials and advanced CNC machining processes, ensuring perfect dimensions, smooth finishes, and high mechanical strength. These flanges are available in a range of pressure classes—from Class 150 to Class 2500—and conform to international standards like ASME B16.5, ASME B16.47, DIN, EN, and BS. Whether for high-pressure pipelines or high-temperature exhaust systems, SS 321 flanges from Labdhi Metals provide reliable sealing and structural performance.
As a trusted stockist, Labdhi Metals maintains a large inventory of ready-to-dispatch Stainless Steel 321 flanges to meet urgent project requirements. The company exports to major global markets, including the USA, Germany, Saudi Arabia, UAE, South Africa, and Southeast Asia. All flanges are supplied with proper documentation, including Mill Test Certificates (MTCs), third-party inspection reports, and compliance with ASTM and ASME specifications.
Standard | ASTM A182 / ASME SA182 |
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Grade | Stainless Steel 321 |
Size Range | ½" NB to 48" NB |
Pressure Class | Class 150 to 2500 |
Types | WNRF, SORF, BLRF, SWRF, Threaded, Lap Joint |
Dimensions | ASME B16.5, B16.47, DIN, EN, BS |
With ISO-certified production facilities and a strong emphasis on quality assurance, Labdhi Metals has built a reputation for providing high-performance, corrosion-resistant flange solutions. Their customer-centric approach, global logistics network, and technical expertise make them a preferred supplier of Stainless Steel 321 flanges for industries such as petrochemical, aerospace, oil & gas, power generation, and marine engineering.
Element | SS 321 (%) |
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Carbon (C) | ≤ 0.08 |
Manganese (Mn) | ≤ 2.00 |
Silicon (Si) | ≤ 1.00 |
Phosphorus (P) | ≤ 0.045 |
Sulfur (S) | ≤ 0.030 |
Chromium (Cr) | 17.0 – 19.0 |
Nickel (Ni) | 9.0 – 12.0 |
Titanium (Ti) | ≥ 5xC, ≤ 0.70 |
Property | SS 321 |
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Tensile Strength (MPa) | ≥ 515 |
Yield Strength (MPa) | ≥ 205 |
Elongation (%) | ≥ 30 |
Hardness (HRB) | ≤ 95 |