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Paul Tube Fittings is a reliable manufacturer and supplier of high-quality Stainless Steel 321 Instrumentation Tube Fittings in Houston, USA. Being renowned for the provision of precision-engineered fittings, Paul Tube Fittings serves multiple industrial demands with efficient performance, corrosion resistance, and durable service life. Their SS 321 fittings are well known for their high-temperature and pressure endurance, which makes them a suitable option for critical applications. Dedicated to quality, the company provides a wide variety of fittings in varied sizes and specifications to suit diverse customer needs for the petrochemical, oil & gas, and power generation sectors.
Instrumentation Tube Fittings made of Stainless Steel 321 are titanium-stabilized austenitic stainless steels consisting mostly of iron, 17–19% chromium, 9–12% nickel, and with the introduction of titanium (minimum 5x carbon content) for enhancing intergranular corrosion resistance. Typical mechanical characteristics are a tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of 40%. SS 321 retains excellent strength at high temperatures, has good resistance to creep, and is non-magnetic in the annealed state. These characteristics qualify it for chemical and aerospace use at high temperatures.
| Specifications | ASTM A182, A276, A479 / ASME SA182, SA276, SA479 |
| Size | 2mm~25mm and 1/16″~1″ |
| Thread | NPT, PT, BST, NPS, PS, BSP |
| Pressure | 6000PSI for Stainless Steel 300/1000/3000PSI for Brass |
| Types | Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
| 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 |
|
Density |
Melting Point |
Tensile Strength |
Yield Strength 0.2% Proof |
Elongation (%) |
|
8.0 g/cm3 |
1457 °C (2650 °F) |
Psi – 75000 , MPa – 515 |
Psi – 30000 , MPa – 205 |
35 % |
At Paul Tube Fittings, we are the largest supplier, manufacturer, and exporter of Stainless Steel 321 Instrumentation Tube Fittings in Houston, USA. Our advanced manufacturing facilities, strategically positioned in the USA, enable us to deliver high-quality solutions to meet your specific requirements. With a robust inventory of over 16,000 tons of top-grade materials, we are well-equipped to fulfill your needs promptly. Our commitment to excellence and efficiency ensures we always have the available stock to support your demands.
| Fitting Types | Size Inch | Size OD | |
|---|---|---|---|
| Tube to | Female Fitting | 1/4″ to 1 1/2″ | 6mm to 38mm |
| Pipe Fitting | |||
| Union | |||
| Male Fitting | |||
| Tube Fittings Accessories |
Grade | British | Euronorm | UNS No. | SS | JIS | |||
European Standards | British Standards | DIN No | Name | |||||
321 | 58B, 58C | 321S31 | 1.4541 | X6CrNiTi18-10 | S32100 | 2337 | SUS 321 | |
Contact us to get a quick quote for your requirement.
Paul Tube Fittings is a leading supplier and stockist of premium Stainless Steel 321 Instrumentation Tube Fittings in Houston, USA. Our products are widely utilized across various industries, and we are committed to delivering exceptional service and ensuring high customer satisfaction. Our distinctive finishing techniques set us apart in the metal industry. We are dedicated to consistently providing top-quality products while effectively addressing the needs of our customers.
Stainless Steel 321 Instrumentation Tube Fittings are extensively used in applications where heat and oxidation resistance is critical. Typical uses involve petrochemical processing, transportation of chemicals, food and beverage processing, and power generation equipment. They function best in high-temperature conditions like aircraft exhaust systems, furnace components, heat exchangers, and refinery hardware. These fittings are leak-proof and suited for use in control and instrumentation systems because they are dimensionally accurate and corrosion-resistant. Their dependability in hostile environments makes them a choice selection for engineers and technicians operating in challenging operational conditions.
Please feel free to contact us if you need any further information or for enquiry.
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