Reliable SS 321H compression tee manufacturer in India
We are a trusted manufacturer and supplier of Stainless Steel 321 Instrumentation Fittings, providing precision engineered connection solutions for industries. Our SS 321 fittings offer excellent resistance to corrosion and oxidation, which makes them suitable choice for high temperature and demanding process environments. Our range covers different connection requirements, including UNS S32100 tube fittings for secure and leak resistant tubing connections, as well as SS 321 Bulkhead Union fittings for applications where tubing needs to pass safely through panels or equipment walls.
We supply Alloy 321 NPT Male Adapters to oil and gas, petroleum and offshore industries in different sizes and connections. Every fitting is manufactured with close attention to material quality, dimensions, surface finish, and thread accuracy to ensure consistent installation and dependable service.
Stainless Steel 321 instrumentation tube fittings are built for applications where sustained high temperatures and vibration would compromise standard austenitic grades. These fittings can withstand temperature working range of -196°C to +900°C. That is why these fittings are specified when a system must resist sensitization and intergranular corrosion at sustained high temperatures.
Table of content
- Stainless Steel 321 Instrumentation Tube Fittings Specification
- Types of UNS S32100 compression fittings
- SS 321 Bulkhead Union chemical composition
- AISI 321 Compression Tube Fittings mechanical composition
- DIN 1.4541 Female Elbow equivalent grade
- Stainless Steel 321 Instrumentation Tube Fittings Price list
- Size chart of Alloy 321 NPT Male Adapters
- Stainless Steel 321 JIC Fittings Heat Treatment
- Are SS 321 Flare Fittings suitable for corrosive environments like sulfuric acid?
- UNS S32100 Female Run Tee Dimensions
- Testing of AISI 321 Compression fittings
| Standards | ASTM A182 / ASME SA182 |
|---|---|
| Sizes | 1/8″ to 2″ |
| Connection Types |
|
| Tube Size Range | 1/16″ to 2″ OD |
| Temperature Range | -196°C to +900°C |
| Surface Finish |
|
| Threads |
|
| Tensile Strength | ≥ 515 MPa |
| Test & Certification |
|
| Hardness | ≤ 95 HRB |
| Thread Standards | ISO 228/1 (BSPP) / ASME B1.20.1 (NPT) / ISO 7/1 (BSPT) |
| Pressure Rating |
|
| Ends |
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Refer chemical and mechnical properties of UNS S32100 compression fittings and SS 321 Bulkhead Union
SS 321 Bulkhead Union
AISI 321 Compression Tube Fittings
DIN 1.4541 Female Elbow
Alloy 321 NPT Male Adapters
Stainless Steel 321 BSPP Plugs
UNS S32100 Front Ferrule
| 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 |
| 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 |
Our extensive range includes AISI 321 Compression Tube Fittings and DIN 1.4541 Female Elbow designed for both instrumentation and industrial applications.
| 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 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
|---|---|---|---|---|
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Precise dimensions and sizes for your Alloy 321 NPT Male Adapters and Stainless Steel 321 BSPP Plugs needs
| Product | Price in USD (Pcs) |
Price in Dirham (Pcs) |
Price in Euro (Pcs) |
|---|---|---|---|
| 1/4 in. Tube O.D. x 1/4 in. FNPT SS 321 Female Connector | US $7.82 | 28.72 AED | € 6.77 |
| 3/8 in. Tube O.D. x 1/8 in. FNPT AISI 321 Female Connector | US $10.25 | 37.64 AED | € 8.87 |
| Nominal Size (NPT / BSP) | Tube OD / Pipe OD ) | Hex Size ) | Overall Length ) |
|---|---|---|---|
| 1/8 | 6 | 14 | 28 |
| 1/4 | 8 | 17 | 30 |
| 3/8 | 10 | 19 | 32 |
| 1/2 | 12 | 22 | 36 |
| 5/8 | 16 | 27 | 38 |
| 3/4 | 19 | 32 | 45 |
| 1 | 25 | 41 | 50 |
| 1-1/4 | 32 | 50 | 58 |
| 1-1/2 | 40 | 60 | 65 |
| 2 | 50 | 75 | 75 |
Efficient exporter of UNS S32100 Front Ferrule and 321 SS instrument fitting with easy installation and cost savings
| Heat Treatment | 950-1120 °C |
|---|
No, SS 321 flare fittings are not suitable for corrosive environments like concentrated sulfuric acid.
| TUBE OD IN | PIPE SIZE NPT | A | F | D | E | H | G | K | J |
|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 1/8 | 27.0 | 14 | 15.2 | 5 | 19.6 | 14 | 46.0 | 38.6 |
| 3/8 | 1/8 | 30.5 | 17 | 16.8 | 7 | 23.1 | 17 | 50.3 | 42.9 |
| 1/2 | 1/8 | 36.0 | 22 | 22.8 | 10 | 25.9 | 22 | 58.4 | 48.3 |
| 3/4 | 1/2 | 39.9 | 27 | 24.4 | 15 | 29.7 | 30 | 68.3 | 51.8 |
| 1 | 3/4 | 50.5 | 34 | 31.3 | 21 | 38.2 | 38 | 87.9 | 75.6 |
FAQs
Can you supply mill test certificates with every order?
Yes, every batch ships with EN 10204 3.1 or 3.2 certification
What’s the difference between SS 321 and SS 321H?
321H has a higher minimum carbon content (0.04–0.10%) and slightly different titanium stabilization ratio
Which payment and shipping terms do you support?
We work with standard international trade terms and ship via both sea and air freight, with full export documentation.