Reputable Houston, USA-based manufacturer and supplier Vipul Pipes and Tubes provides a large selection of premium stainless steel 321 pipe fittings for demanding industrial applications. Austenitic stainless steel stabilised with titanium, SS 321 is designed to offer superior resistance to intergranular corrosion following welding. It is perfect for high-temperature and high-pressure applications because it retains its strength and resistance to oxidation at high temperatures. As per ASTM A403, Vipul Pipes and Tubes produces elbows, reducers, tees, caps, and crosses, guaranteeing dimensional accuracy, mechanical soundness, and long-lasting performance in corrosive and heated environments.
| Specifications | ASTM A403 / ASME SA403 |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Size Range | 15 NB UP TO 1200 NB ; 1/8″ NB TO 48″ NB |
| Schedule | SCH 5S , 10S ,10, 20 , 40S , 40 , STD , 60 , 80S , 80 , XS , 100 , 120 , 140 , 160 & XXS. |
| Type | Seamless & 100% X-Ray Welded, Fabricated |
Vipul Pipes and Tubes’ stainless steel 321 pipe fittings are stabilised with titanium (≥5x C content) to stop carbide precipitation and are made of chromium (17–19%) and nickel (9–12%). Excellent resistance to intergranular corrosion is offered by these fittings, especially following welding or extended exposure to high temperatures. Tensile strength ≥515 MPa, yield strength ≥205 MPa, and elongation ≥30% are examples of mechanical properties. SS 321 is perfect for long-term use in high-temperature service because it functions well up to 870°C (1600°F), retaining structural stability and resistance to corrosion.
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Harry Fittings one of the largest suppliers of Stainless Steel 321 Pipe Fittings in Houston, USA. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Stainless Steel 321 is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Stainless Steel 321 Pipe Fittings in the USA.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 321 Pipe Fittings from Harry Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| Grade | Specific Heat 0-100°C (J/kg.K) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Elastic Modulus (GPa) | Thermal Conductivity (W/m.K) | Density (kg/m3) | Elec Resistivity (nΩ.m) | |||
| 0-315°C | 0-100°C | 0-538°C | At 500°C | At 100°C | |||||
| Stainless Steel 321 | 500 | 17.2 | 16.6 | 18.6 | 193 | 22.2 | 16.1 | 8027 | 720 |
Stainless steel 321 pipe fittings offer many advantages, including excellent resistance to high temperature oxidation and corrosion, making them ideal for use in hot environments and chemically reactive Titanium inclusions prevents carbide precipitation, enhances weldability and maintains high thermal properties. These fittings provide superior mechanical properties such as high tensile strength, rigidity and durability. They are highly resistant to intergranular corrosion, making them suitable for pressure molds, heat exchangers, and chemical applications Overall, stainless steel 321 ensures durability and mechanical reliability in the circumstances.
Yes, custom sizes are available for Stainless Steel 321 Pipe Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@harryfittings.us.
| Nominal Pipe Size | Inch | 3/4 | 1 1/4 | 2 | 3 | 4 | 6 | 10 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|
| OD. | Inch | 1.05 | 1.66 | 2.375 | 3.5 | 4.5 | 6.625 | 10.75 | 12.75 | |
| Millimeter | 26.7 | 42.2 | 60.3 | 88.9 | 114.3 | 168.3 | 273.1 | 323.9 | ||
| Straight Crosses | Center to End | Inch | 1 7/8 | 2 1/2 | 3 3/8 | 4 1/8 | 5 5/8 | 8 1/2 | 10 | |
| Caps | L. | Inch | 1 | 1 1/2 | 1 1/2 | 2 | 2 1/2 | 3 1/2 | 5 | 6 |
| Stub Ends | Long L. | Inch | 3 | 4 | 6 | 6 | 6 | 8 | 10 | 10 |
| Lap Diameter | Inch | 1 11/16 | 2 1/2 | 3 5/8 | 5 | 6 3/16 | 8 1/2 | 12 3/4 | 15 | |
| Short L. | Inch | 2 | 2 | 2 1/2 | 2 1/2 | 3 | 3 1/2 | 5 | 6 | |
| Straight Tees | Center to End | Inch | 1 1/8 | 1 7/8 | 2 1/2 | 3 3/8 | 4 1/8 | 5 5/8 | 8 1/2 | 10 |
| Nominal Pipe Size | Outside Diameter | 90° Elbows | 45° Elbows | 180° Returns | ||||
|---|---|---|---|---|---|---|---|---|
(inches) | Long Radius | Short Radius | Long Radius | Long Radius | ||||
(mm) | (inches) | Center to Face (inches) | Center to Face (inches) | Center to Face (inches) | Radius (inches) | Center to Center (inches) | Back to face (inches) | |
1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
The stainless steel 321 pipe fittings from Vipul Pipes and Tubes are extensively utilised in boiler equipment, chemical plants, refineries, heat exchangers, and aircraft exhaust systems. These fittings work especially well with welded pipe systems that are exposed to high temperatures and oxidising conditions. For applications where resistance to sensitisation and thermal stability are crucial, SS 321 is the material of choice. Superheater tubes, jet engine parts and flue gas systems are among the common applications. Its superior creep strength and weldability guarantee dependable operation in corrosive and extremely hot industrial environments.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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