Khuliso Fittings is a reputable manufacturer and supplier located in Cape Town, South Africa, specializing in top-notch Stainless Steel 321 Pipe Fittings. These fittings are celebrated for their precision, durability, and compliance with international quality standards, making them ideal for high-temperature and corrosive environments. The Stainless Steel 321, which is stabilized with titanium, offers remarkable resistance to intergranular corrosion and oxidation. Khuliso Fittings serves a variety of industries, including chemical processing, petrochemical, power generation, and marine applications, ensuring that each fitting provides outstanding strength, reliability, and a long service life even in the toughest operating conditions.
| 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 |
The composition of Stainless Steel 321 Pipe Fittings includes 17–19% chromium, 9–12% nickel, and titanium for stabilization, with a carbon content of up to 0.08%. This specific makeup enhances their resistance to carbide precipitation during welding and high-temperature use. These fittings boast a tensile strength of around 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. They also demonstrate excellent mechanical stability and oxidation resistance up to 870°C, making them perfect for extended exposure to heat and corrosive environments.
| 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 % |
Khuliso Fittings one of the largest suppliers of Stainless Steel 321 Pipe Fittings in Cape Town, South Africa. 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 South Africa.
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 Khuliso 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@khulisofittings.co.za.
| 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 |
Stainless Steel 321 Pipe Fittings are widely used in applications that demand exceptional resistance to heat and corrosion. You’ll often find them in exhaust manifolds, expansion joints, furnace components, chemical processing equipment, and heat exchangers. These fittings excel in settings where thermal cycling is common, such as in aerospace, power generation, and refinery operations. Their ability to resist scaling and maintain strength at high temperatures makes them a go-to choice for high-pressure and high-temperature systems, ensuring safe and efficient performance across various industrial sectors.
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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