Stainless Steel 321 / 321H Pipe Fittings
Arrow Piping Solutions is one of the top-rated manufacturers and suppliers of SS 321 / 321H Pipe Fittings in India. We offer a broad range of products like SS 321 Pipe Cap, Stainless Steel 321H Buttweld Fittings, ASTM A403 WP321 45° Elbow, 321 SS 90° Elbow, 321H SS Reducer, and more. Our fittings are widely supplied to industries such as power generation, petrochemical, oil and gas, and more.
Our SS 321 / 321H Pipe Fittings are known for their excellent mechanical properties, high-temperature strength, superior weldability, and exceptional corrosion resistance. These fittings are produced using high-quality raw materials and strict quality control methods.
Available Products:
- SS 321 Pipe Elbow
- SS 321 Seamless Pipe Fittings
- Stainless Steel 321 Pipe Bend
- SS 321H Welded Pipe Fittings
- 321H SS Buttweld Cross
Arrow Piping Solutions offers SS 321 / 321H fittings as per international standards such as ASME/ANSI B16.9, B16.25, MSS-SP-43, and B16.28. Our fittings are available in various sizes, wall thicknesses, and customized dimensions.
| Specification | ASTM A403 / ASME SA403 |
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| Dimension Standards | ASME B16.9, B16.28, MSS-SP-43 |
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| Size Range | ½" NB to 24" NB (DN6~DN600) |
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| Seamless Size | ½" to 10" |
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| Welded Size | ½" to 48" |
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| Thickness | Sch 5s, 10s, 40s, 80s, 160s, XXS |
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| Bending Radius | R=1D to 10D or Custom |
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| Types | Seamless / Welded / Fabricated |
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| Standard | Werkstoff Nr. | UNS | JIS | EN |
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| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
| NPS | O.D. at Bevel | I.D. at End | Wall Thickness | Elbows/Tees A/B/C/M | 180° Return Bends O | 180° Return Bends K | Ends Alignment U | Reducers H | Caps E |
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| ½ to 2½ | 0.06 -0.03 | 0.03 | ≥87.5% nominal | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 3 to 3½ | 0.06 | 0.06 | ≥87.5% nominal | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 4 | 0.06 | 0.06 | ≥87.5% nominal | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 5 to 8 | 0.09 -0.06 | 0.06 | ≥87.5% nominal | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.25 |
| 10 to 18 | 0.16 -0.12 | 0.12 | ≥87.5% nominal | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 20 to 24 | 0.25 -0.19 | 0.19 | ≥87.5% nominal | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 26 to 30 | 0.25 -0.19 | 0.19 | ≥87.5% nominal | 0.12 | – | – | – | 0.19 | 0.38 |
| 32 to 48 | 0.25 -0.19 | 0.19 | ≥87.5% nominal | 0.19 | – | – | – | 0.19 | 0.38 |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
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| 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 |
| SS 321H | 0.04–0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00–19.00 | 0.10 max | 9.00–12.00 | 4(C+N) – 0.70 max |
| Density | 8.0 g/cm³ |
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| Melting Point | 1457°C (2650°F) |
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| Tensile Strength | 75000 Psi / 515 MPa |
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| Yield Strength | 30000 Psi / 205 MPa |
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| Elongation | 35% |
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- Textile Machinery
- Oil and Gas Industry
- Pulp and Paper Industry
- Power Plants
- Pharmaceutical Processing
- Modern Architecture
- Heat Exchangers
- Dairy and Food Processing
- Boilers and Condensers
- Water Waste Projects
We ensure all products are tested for quality and durability. Arrow Piping Solutions offers custom packaging and fast, secure delivery across India and overseas. As a leading Stainless Steel 321 / 321H Pipe Fittings Manufacturer and Supplier in India, we’re committed to client satisfaction with top-notch service and premium products.