Duplex Tube & Pipe Fittings
Duplex steel pipe & tube fittings are essential components in piping systems where superior strength, corrosion resistance & durability are needed. They are made from duplex stainless steel, a unique alloy that combines the properties of both austenitic & ferritic stainless steel materials. They offer excellent resistance to stress corrosion cracking & pitting. Available in various forms such as elbows, tees, reducers, unions, couplings & crosses.
Duplex steel tube fittings provide leak-proof & secure connections in fluid handling systems. These fittings are manufactured in sizes ranging from 1/4 inch to 3/4 inch. Duplex steel compression fittings have a robust design with a two-ferrule configuration, providing a vibration-resistant & gas-tight seal. Their precise geometry, hardened ferrules ensure strong tube grip & longevity under extreme operating conditions. Whether in hydraulic systems, chemical processing, or seawater applications, duplex steel fittings deliver reliable performance, extended service life & reduced maintenance.
Duplex Tube & Pipe Fittings Manufacturer & Supplier
Kalpataru Piping Solutions is a leading manufacturer & supplier of duplex stainless steel products like pipe & tube fittings to deliver strength, durability & excellent resistance to corrosion in aggressive environments. Engineered with a dual phase microstructure of ferritic & austenitic materials. Duplex steel fittings offer superior mechanical performance compared to standard stainless steels. With a unique dual phase microstructure, our duplex stainless steel pipe fittings are designed to withstand aggressive chemicals, high pressure & fluctuating temperatures.
Our product range includes a full selection of duplex steel compression fittings, tube fittings & pipe fittings designed for industrial applications. These fittings ensure leak-proof, vibration-resistant connections even under high pressure & temperature applications. Available in standard grades like UNS S31803 & UNS S32205 to use for instrumentation lines, hydraulic systems, & marine piping. With robust two-ferrule technology, duplex compression fittings provide tight, gas-sealed connections with easy installation & reusability.
We also offer a wide variety of duplex steel pipe fittings including elbows, tees, reducers, crosses & couplings in multiple sizes & specifications. These fittings provide outstanding resistance to pitting, crevice corrosion & stress corrosion cracking. We ensure precision manufacturing, quality testing & global supply of duplex fittings that meet international standards such as ASTM A815, ASME B16.11 & DIN EN specifications. Contact us today for pricing, custom sizes, and technical support on Duplex Steel Compression, Tube, and Pipe Fittings designed for high-performance industries.
Grades of Duplex Steel Tube & Pipe Fittings
We offer duplex tube fittings which are designed by using many other grades like UNS S32205 & UNS S31803. Explore these grades & connect with us for your special requirements.
Duplex Steel UNS S32205 Compression Tube Fittings
These fittings offer reliable, high strength, exceptional corrosion resistant & leak-free performance in industrial applications.
Duplex Steel UNS S31803 Compression Tube Fittings
These Fittings are used for high-pressure systems to combine excellent mechanical strength with resistance to pitting & stress corrosion.
Duplex Steel Pipe & Tube Fittings Specification
Duplex Compression Fittings are designed for secure, high-pressure connections with excellent corrosion resistance, vibration tolerance, and leak-proof sealing in critical fluid and gas systems. Ideal for instrumentation and hydraulic applications.
| Specification |
ASTM A276, ASTM A182 ASME SA479, ASME SA182 |
| Tube Size | 1/16 OD to 2 OD, Od to 50mm OD |
| Type | Seamless/ Welded/Fabricated |
| Equivalent | PARKER, SWAGELOK, HOKE, DK-LOK |
| Thread | BSPT, UNF, SAE, BSP, NPT, ISO, etc. |
| Material Grades | Duplex 2205 Duplex S31803 Duplex S32205 |
| PTFE Standard | ASTM D1710 and D3294 |
| Pressure Rating | 1000/300/6000/3000/10000 PSI for Duplex Steel |
| Temperature | 150-400°C |
Duplex Stainless Steel Compression Tube Fittings Chemical Composition
Duplex Stainless Steel Compression Tube Fittings are composed of chromium, nickel, molybdenum, and nitrogen, providing superior strength, corrosion resistance, and durability in harsh environments.
| MN | C | SI | S | FE | P | CR | N | MO | NI |
| 2.00 Max | .030 Max | 1.00 Max | .020 Max | Balance | .030 Max | 22.0-23.0 | 0.14-0.20 | 3.00-3.50 | 4.50-6.50 |
Mechanical Properties of Duplex Tube & Pipe Fittings
Duplex Tube & Pipe Fittings offer high yield strength, excellent tensile strength, and superior resistance to stress corrosion cracking ideal for high-pressure, high-temperature applications in aggressive industrial environments.
| MELTING POINT | DENSITY | TENSILE PROPERTIES | ELONGATIONAL | (0.2%OFFSET) YIELD PROPERTIES |
| (2460 °F) 1350 °C | 7.08 g/cm3 | MPa – 800, Psi – 116000 | 15 % | MPa – 550, Psi – 80000 |
Duplex Tube Fitting Sizes
Duplex Tube Fittings are available in sizes from 1/8” to 2” for seamless types and 24 to 94 (custom) for welded types, with pressure ratings from 3000 to 30,000 PSI. Thread types include NPT, BSPT, and BSPP for versatile industrial applications.
- Duplex SS Seamless Compression Fittings
Size: 1/8 to 2
Pressure Rating: 3000 psi to 10000 psi
Threads: NPT, BSPT, BSPP
- Duplex SS Welded Compression Fitting and Tube Adapters
Size: 24 to 94 and Custom
Pressure Rating: 30000 psi to 10000 psi
Threads: NPT, BSPT, BSPP
Dimension of Duplex Tube Fittings
Duplex Tube Fittings are offered in standard sizes ranging from 1/4″ to 2″ OD, ensuring precise fit, leak-proof performance, and compatibility with global piping systems.
| Threads Dimension of BSPP and BSPT | |||||||||
| SIZE | PITCH & SIZE | OD THREAD | OD THREAD | ID THREAD | ID Thread | ||||
| DASH | BSPP & BSPT | MALE BSPT | MALE BSPP | FEMALE BSPT | FEMALE BSPP | ||||
| Inch to TPI | mm | inch | mm | inch | mm | inch | mm | inch | |
| -4 | 1/4 to 19 | 12,8 | 0.5 | 13,0 | 0.51 | 11,2 | 0.44 | 11,9 | 0.47 |
| -2 | 1/8 to 28 | 9,5 | 0.37 | 9,6 | 0.38 | 8,4 | 0.33 | 8,6 | 0.34 |
| -6 | 3/8 to 19 | 16,3 | 0.64 | 16,5 | 0.65 | 14,7 | 0.59 | 15,2 | 0.6 |
| -10 | 5/8 to 14 | 22,5 | 0.89 | 22,8 | 0.9 | 20,6 | 0.81 | 20,8 | 0.82 |
| -8 | 1/2 to 14 | 20,4 | 0.8 | 20,8 | 0.82 | 18,3 | 0.72 | 19,1 | 0.75 |
| -12 | 3/4 to 14 | 25,9 | 1.02 | 26,3 | 1.04 | 23,9 | 0.94 | 24,6 | 0.97 |
| -20 | 1.1/4 to 11 | 41,1 | 1.62 | 41,8 | 1.64 | 38,6 | 1.52 | 39,4 | 1.55 |
| -16 | 1 to 11 | 32,6 | 1.28 | 33,1 | 1.3 | 29,7 | 1.17 | 30,7 | 1.21 |
| -24 | 1.1/2 to 11 | 47,0 | 1.85 | 47,7 | 1.88 | 44,5 | 1.75 | 45,5 | 1.79 |
| -40 | 2.1/2 to 11 | 74,1 | 2.92 | 75,1 | 2.95 | 71,9 | 2.83 | 72,6 | 2.86 |
| -32 | 2(11) | 58,6 | 2.31 | 59,5 | 2.34 | 56,4 | 2.22 | 57,4 | 2.26 |
| -48 | 3 to 11 | 86,6 | 3.41 | 87,9 | 3.46 | 84,6 | 3.33 | 85,4 | 3.36 |
Duplex Tube & Pipe Fittings Pressure Ratings
Duplex Tube & Pipe Fittings offer excellent pressure ratings, typically ranging from 3000 PSI to 6000 PSI, ensuring safe and reliable performance in high-pressure piping systems across industrial applications.
| Duplex 2507 | ||
| NPT/ISO Pipe Size In | Male | Female |
| PSIG (BAR) | PSIG (BAR) | |
| 1/16 | 15000 (1033) | 12900 (888) |
| 1/8 | 15000 (1033) | 12500 (861) |
| 1/4 | 15 000 (1 033) | 12 700 (875) |
| 3/8 | 15 000 (1 033) | 10 200 (702) |
| 1/2 | 14 800 (1 019) | 9 400 (647) |
| 3/4 | 10 000 (689) | 8 900 (613) |
| 1 | 10 000 (689) | 8 500 (585) |
| 1 1/4 | 10 000 (689) | 9 600 (661) |
| 1 1/2 | 9 600 (661) | 8 900 (613) |
| 2 | 7 500 (516) | 7 500 (516) |
Types of Duplex Steel Compressions Tube & Pipe Fittings
Explore a wide range of Duplex Steel Compression Tube & Pipe Fittings, including unions, elbows, tees, adapters, couplings & bulkheads designed for high-pressure, leak-proof & corrosion-resistant performance in demanding environments.
| Duplex Steel Tube Fittings | Duplex Steel 2205 Tube Fittings |
| Duplex Steel S31803 Seamless Tube Fittings | Duplex Steel S32205 Welded Tube Fittings |
| Duplex Steel UNS S31803 Tube Elbow | Duplex Steel Buttweld Tee |
| 2205 Duplex Buttweld Reducer Suppliers | ANSI Duplex Steel Tube Fittings |
| Duplex Stainless Steel Stubends Dealer | Ferritic / Austenitic Duplex Tube Fittings Exporter |
| Duplex Butt Weld Fittings Stockholder | 2205 Duplex Duplex Steel Pipe End Cap Distributors |
| Duplex Steel UNS S32205 45 deg Elbow | Duplex Steel 90deg.LR Elbow Manufacturer |
| Duplex Steel Din 1.4462 Tube Tee | Duplex Steel Short Radius Elbow |
| ANSI B16.9 Duplex Buttweld Fittings | 2205 Duplex End Tube Cap Stockist |
| ASTM A815 Duplex Steel Welded Tube Fittings | ASME SA815 Duplex Tube Fittings |
Related Products
- Duplex UNS S31803 Buttweld Fittings
- Duplex UNS S32205 Buttweld Fittings
- Duplex UNS S31803 Forged Fittings
- Duplex UNS S32205 Forged Fittings
- Duplex UNS S31803 Olets
- Duplex UNS S32205 Olets
- Duplex Steel UNS S31803 Fasteners
- Duplex Steel UNS S32205 Fasteners
- Duplex UNS S31803 Instrumentation Valves
- Duplex UNS S32205 Instrumentation Valves
- Duplex UNS S32205 Plates and Duplex UNS S32205 Sheets
- Duplex UNS S31803 Perforated Sheet
- Duplex UNS S32205 Perforated Sheet
- Duplex UNS S31803 Compression Tube Fittings
- Duplex UNS S32205 Compression Tube Fittings
- Duplex UNS S31803 Wiremesh
- Duplex UNS S32205 Wiremesh
- Duplex UNS S31803 Pipe Spools
- Duplex UNS S32205 Pipe Spools
- Duplex UNS S31803 Long Radius Bends
- Duplex UNS S32205 Long Radius Bends
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