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Super Duplex Tube Fittings

Super Duplex Steel s32750 Tube Fittings Manufacturer in India

Super Duplex Steel S32750 Tube Fittings are produced using high-performance alloy, which has an excellent combination of high strength, better corrosion resistance, and long-term thermal stability. These fittings are designed specifically to work in harsh conditions like chemical processing units, offshore oil and gas platforms, seawater handling systems and desalination plants. Super Duplex instrumentation tube fittings are characterised by excellent chloride stress corrosion cracking, crevice corrosion and pitting resistance since they contain high levels of chromium, molybdenum and nitrogen. They are leak-free, have a high degree of mechanical integrity in high-pressure and -temperature operating conditions and provide a reliable service life in the critical industrial piping systems where safety and longevity matter.

UNS S32760 45 Degree Tee, Super Duplex Steel S32750 Tube Fittings, Super Duplex Steel S32760 Tube Fittings, UNS S32750 45 Degree Elbow, UNS S32760 Union Tee and DIN 1.4410 Female Branch Tee are commonly used parts in assemblies of precision piping and instrumentation that require a strong and corrosion-free connection.

Kalpataru Piping Solution is a reputable supplier, manufacturer and exporter of Super Duplex Steel UNS S32750 and UNS S32760 instrumentation tube fittings that are used to secure connections to straight tubes, pipes and hydraulic lines. These are the Super Duplex compression fittings which find wide applications in oil refineries, petrochemical plants, chemical processing industries, marine, and power generating industries. Our UNS S32750 union elbow fittings are designed to be used in high-pressure systems and have good fatigue strength, and Super Duplex Steel S32760 bulkhead elbow fittings are easy to install either by panels or equipment walls so that system partitioning can be easily done during maintenance, inspection or repair. Let us go ahead and add to this that Super Duplex Steel S32750 union tee fittings enable sure connection between pipe sizes and have precision-machined threads and ferrule geometry to provide tight sealing and resistance to vibration. These tube fittings are corrosion resistant and enhance efficiency in operations as well as maintenance costs under hard service environments.

Grade S32760 Super Duplex Steel Union Cross, Super Duplex Steel S32750 Tube Fittings, Super Duplex Steel S32760 Tube Fittings, Super Duplex Steel Hydraulic Tube Fittings are produced as per international standards like ASTM A182 F53/F55 and are offered in a variety of sizes, pressure levels and types to suit various industrial needs.

Super Duplex Steel S32750 Union Cross Fittings are regularly employed as threaded connections with the two ends created to be firmly clamped to instrumentation and procedure control lines. UNS S32750 male connectors are appropriate in connecting pipelines to valves, pumps and other devices like heat exchangers or water treatment systems. Such bulkhead male connector fittings are suggested in the management of corrosive liquids, seawater, and process fluids and are very resistant to scaling and erosion but are not usually used with highly compressible media, e.g., air, nitrogen, or steam, in dynamic service.

What are Super Duplex Steel S32750 tube fittings?

Super Duplex Steel S32750 tube fittings are high-performance products which are supposed to be of the highest corrosion and strength in the extreme conditions of chloride, marine, and chemical conditions. With a 50/50 austenitic-ferritic microstructure provided, they have an excellent pitting (PREN > 40) and crevice corrosion performance and are commonly used in subsea pipelines and chemical processing.

Specification of Super Duplex Steel S32750 tube fittings

Super duplex tube fittings are produced to exacting chemical, mechanical, and dimensional standards to deliver superior performance under harsh conditions.
Specifications ASTM A182, A276, A479 / ASME SA182, SA276, SA479
Size 1/16” 1/2” & 1.5MM to 38.1MM
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

Super Duplex Steel S32750 tube fittings Types

Explore different fitting types available in super duplex tube fittings material designed to withstand demanding operating conditions.
UNS S32750 / S32760 Super Duplex Tube Fittings Manufacturing Standards
The manufacturing of UNS S32750 and S32760 super duplex tube fittings adheres to globally recognized standards to guarantee consistent quality and interoperability.
American standard Manufacturing form
ASTM A276 Super duplex tube adapters Straight fittings
ASTM A479
ASTM A276M, A479M
ASME SA 276/ SA 479
ASTM A182 Compression Cross
ASME SA 182 Compression Tee
ASTM A182M Compression Elbow
Alloy 2507 Compression Tube Fittings Sizes
Alloy 2507 compression fittings come in a variety of sizes to meet the needs of high-pressure hydraulic systems.
Tube Fittings Types Forms of Super Duplex 2507 Tube Fittings Size OD Size Inch
Tube To Union Union Tee, Bulkhead Union, Union Elbow, Reducing Elbow, Union Cross, Union Tee, Bulkhead Union, Union Elbow, Reducing Elbow, Union Cross. 6mm to 38mm 1/4″ to 1 1/2″
Tube to Male Fittings Male Connector, Male Bulkhead Connector, Male Elbow, Male Run Tee, Male Branch Tee, Male Connector, Male Bulkhead Connector, Male Elbow, Male Run Tee, Male Branch Tee.
Tube to Female Fittings Female Connector, Female Bulkhead Connector, Female Run Tee, Female Branch Tee, Female Connector, Female Bulkhead Connector, Female Run Tee, Female Branch Tee.
Tube to Pipe Fittings Female Elbow, Street Elbow, Allen Key, Bushing, Female Cap, Female Cross, Female Elbow, Female Tee, Hex Coupling, Hex Nipple, Male Elbow, Male Female Adapter, Male Female Branch Tee, Male Tee, Reducing Hex Coupling, Reducing Hex Nipple, Street Elbow, Street Tee, Union Joint Ball, Female Elbow, Street Elbow, Allen Key, Bushing, Female Cap, Female Cross, Female Elbow, Female Tee, Hex Coupling, Hex Nipple, Male Elbow, Male Female Adapter, Male Female Branch Tee, Male Tee, Reducing Hex Coupling, Reducing Hex Nipple, Street Elbow, Street Tee, Union Joint Ball.
Tube Fittings Accessories Blanking End, Blanking Plug, Tube Nut, Front Ferrule, Back Ferrule, Blanking End, Blanking Plug, Tube Nut, Front Ferrule, Back Ferrule.
Sizes of SDSS Tube Union
Super Duplex Stainless Steel tube unions are offered in sizes designed to provide leak-tight joins across piping systems.
Dash BSPT & BSPP
Size Size & Pitch
inch – TPI
-10 5/8 – 14
-20 1 1/4 – 11
-4 1/4 – 19
-48 3 – 11
-24 1 1/2 – 11
-8 1/2 – 14
-6 3/8 – 19
-40 2 1/2 – 11
-32 2(11)
-12 3/4 – 14
-16 1 – 11
-2 1/8 – 28
Super Duplex Blanking Plug Metric Sizes
Metric sizes (Inches) Size (mm)
1 25 mm
3/4 20 mm
3/8 12 mm
5/16 10 mm
3/16 6 mm
S32750 Female Elbow Thread I.D
Thread inner diameters of S32750 female elbows are precisely forged for secure and standardized connections.
BSPP Female Thread I.D
inch mm
0.75 19,1
2.26 57,4
2.86 72,6
0.6 15,2
3.36 85,4
0.97 24,6
1.21 30,7
1.55 39,4
0.82 20,8
1.79 45,5
0.34 8,6
0.47 11,9
S32760 Male Elbow Thread O.D
The outer diameters of S32760 male elbow threads conform to specifications for improved joint integrity.
BSPT Male Thread O.D
inch mm
0.37 9,5
0.5 12,8
0.64 16,3
0.8 20,4
0.89 22,5
1.02 25,9
1.28 32,6
1.62 41,1
1.85 47,0
2.31 58,6
2.92 74,1
3.41 86,6
UNS S32750 / S32760 Super Duplex Tube Fitting Connection Types
Super Duplex hydraulic fittings specify diverse end types to suit complex hydraulic and piping systems.
  • JIC
  • Butt weld
  • Socket weld
  • Threaded
  • Welding
Grades & Variants of SDSS Tube Fittings

Different grades and variants of Super Duplex Stainless Steel tube fittings ensure optimal selection for specific project requirements.

  • 6MO Alloy Tube Fittings
  • Super Duplex 2507 Grade Tube Fittings
  • UNS S32750 Tube Fittings
  • UNS S32760 Tube Fittings
  • 254 SMO Alloy Tube Fittings
Material Configurations of 25Cr SDSS Instrumentation Fittings

Instrument fittings made from 25Cr SDSS are engineered for durability and precision in instrumentation applications.

  • Female Connectors
  • Adjustable Elbows and Tees
  • Tube-to-Male Connections
  • Tube-to-Tube Couplings
  • Tube Closures
  • Ferrule Assemblies, Weld Connectors, and Nuts
WNR 1.4501 Ferrule Fittings Chemical Composition
The chemical profile of WNR 1.4501 ferrule fittings ensures enhanced protection against corrosion and mechanical wear.
Element Name Composition
Ni Nickel 6.0% – 8.0% min.
Cr Chromium 24.0% – 26.0%
Cu Copper 0.50% max
Mo Molybdenum 3.0% – 5.0%
S Sulfur 0.020% min.
Mn Manganese 1.20%
P Phosphorus 0.035% max
C Carbon 0.030%
Equivalent Material Grades of Super Duplex Tube Fittings (2507 / S32750 / S32760)
Equivalent grades help identify compatible materials that match the chemical and mechanical properties of Super Duplex tube fittings.
STANDARD UNS WERKSTOFF NR.
Super Duplex 2507 S32750 1.4410
Mechanical Properties of Super Duplex Steel S32750 tube fittings
Super Duplex tube fittings exhibit high tensile strength, fatigue resistance, and excellent mechanical robustness.
Properties Values
Elongation 15%
Yield Strength 550 MPa
Tensile Strength 795 MPa
Hardness (HB) 310
Physical Properties of S32760 Stainless Adapter Fittings
These adapters feature physical characteristics tailored to maintain performance in corrosive and high-pressure environments.
Properties Values
Density g/cm³ 7.8
lb/in³ 0.28
Modulus of elasticity GPa 200 194 186 180
psi x 10-6 29
Poissons ratio 0.3
Linear expansion (RT ➞ T)°C x 10-6/°C 13 13.5 14
Thermal conductivity W/m°C 15 16 17 18
Btu/h ft°F 8.7
Thermal capacity J/kg°C 500 530 560 590
Electric resistivity µΩm 0.8 0.85 0.9 1
Density of Alloy 2507 Hydraulic Fittings
The density of Alloy 2507 hydraulic fittings directly influences their weight-to-strength ratio and application flexibility.
Density Values
lb/in 3 0.281
g/cm 3 7.8
Temperature Range of WNR 1.4410 Flare Fittings
Flare fittings made from WNR 1.4410 stainless steel support operations across a wide temperature spectrum without material degradation.
Properties Values Values
Temperature Range ° F C
-58° to 572 -50° to 300° C 
Pressure Limit of S32750 / S32760 Stainless Bushings
Stainless bushings in S32750 and S32760 alloys carry robust pressure limits suitable for high-stress applications.
Size Pressure
Over 9/16″ 10 000 psig / 690 bar
up to 9/16 20 000 psig / 1380 bar
up to 1/2″ 15 000 psig / 1040 bar
Over 1/2″ 3600 psig / 250 bar
Over 9/16″ 10 000 psig / 690 bar
up to 9/16″ 20 000 psig / 1380 bar
Super Duplex Female Run Tee Pressure Rating
The pressure rating of female run tees in Super Duplex materials ensures leak-proof performance under high pressure.
Non-positionable SAE / MSThread Size Designator
psig ( bar )
  • 5076
  • 349
5 / 16-24 2ST
3 / 8-24 3ST
7 / 16-20 4ST
1 / 2-20 5ST
9 / 16-18 6ST
  • 4568
  • 314
3 / 4-16 8ST
  • 3625
  • 249
7 / 8-14 10ST
Advantages of Super Duplex 2507 / S32750 Tube Fittings

These fittings offer superior corrosion resistance, strength, and longevity compared to conventional stainless steels.

  • Exceptional durability against fatigue and erosion.
  • Impressive structural strength.
  • Outstanding resistance to cracking.
  • Reduced thermal expansion rate.
  • Superior ability to conduct heat.
  • Strong protection against crevice corrosion.
Installation of Super Duplex Hex Nipple Fittings
Proper installation practices for Super Duplex hex nipple fittings guarantee secure and durable pipeline connections.
Installation Type
  • Single Ferrule
  • Sleeve Type
  • Metric thread
Bulkhead Union Elbow
  • Metric
  • JIC
  • Threaded
  • NPT
  • BSP
Super Duplex Male Street Tee
  • Double Ferrule
  • 3000-10000 PSI pressure
  • Port Size: 1/16″ to 1 1/2”
Super Duplex Stainless Steel Tube Nuts
  • UNF
  • Double Ferrule
  • NPT
  • 3000-6000 Psig pressure
  • BSPT
Branch Reducing Tee
  • Male To Female
  • Round head
  • Threaded
Street Elbow
  • Round head
  • Threaded
Super Duplex Female Thread Elbow
  • Double Ferrule
  • 3000-6000 Psig pressure
  • UNF
  • NPT
  • BSPT
SDSS Bulkhead Union
  • Single Ferrule
  • Sleeve Type
  • Metric thread
Cross
  • Round head
  • Threaded
Super Duplex Female Run Tee
HS Code of WNR 1.4410 / WNR 1.4501 Tube Fittings
HS coding facilitates efficient classification and trade of WNR 1.4410 and WNR 1.4501 tube fittings in international markets.
Property Value
HS Code 72192190
Other Available Stock of Super Duplex Steel Instrumentation Tube Fittings
  • Super Duplex Steel Swagelok instrumentation Fittings
  • ASTM A182 Super Duplex Steel S32760 Reducing Union Tee
  • Super Duplex 2507 45 Degree Positionable Male Elbow
  • ASTM A276 Super Duplex Steel S32750 Ferrule Nut
  • Super Duplex Steel S32760 Positionable Male Run Tee
  • Super Duplex Steel S32750 /S32760 Hex Plug
  • ASTM A182 Super Duplex S32750 Tube End Closure
  • ASME SA182 S32750 Super Duplex Steel Fitting End Closure
  • 2507 Super Duplex Steel Parker Compression Fittings
  • Super Duplex Steel A182 S32750 Bulkhead Reducing Union
  • Super Duplex Steel S32750 Hydraulic Fittings in India
  • Super Duplex Steel Single Ferrule Compression Fittin
  • Super Duplex Steel S32760 Ferrule Fitting Supplier
  • UNS S32750 Bulkhead Lock Nut
  • Super Duplex S32750 Positionable Male Elbow
  • Super Duplex Steel S32760 Hex Nipple
  • Super Duplex Steel S32750 / S32760 Hex Bushing
  • SA479 Super Duplex Steel S32750 Male Adapter
  • Super Duplex Steel DIN 1.4410 Female Adapter
  • Super Duplex Steel S32750 /S32760 Allen Key Plug
  • UNS S32750 /S32760 Instrumentation Pipe Fittings
  • Super Duplex Steel S32750/ S32760 Tube Cap Fittings
  • Super Duplex Steel Tylok Instrumentation Fittings
  • S32750 /S32760 Super Duplex Steel Union Joint Ball
  • Super Duplex S32760 Two Ferrule Compression Fitting
  • Super Duplex Steel S32750 Ferrule Tube Fittings
  • Super Duplex 2507 High Pressure Hydraulic Tube Fittings
  • DIN 1.4410 Front Ferrule
Suppliers and Exporters of Super Duplex Steel S32750 /S32760 Compression Tube Fittings in Countries Like
Sweden, Saudi Arabia, Romania, Belarus, South Korea, Libya, mexico, Spain, United States, Estonia, Venezuela, Afghanistan, China, brazil, Nepal, Chile, Iran, Mexico, Nigeria, Norway, Argentina, Belgium, Indonesia, Slovakia, Taiwan, Malaysia, Portugal, South Africa, malaysia, Italy, New Zealand, Ireland, Trinidad & Tobago, Singapore, France, Lebanon, Brazil, Germany, srilanka, Tunisia, Kenya, Chile, Ghana, Sri Lanka, Philippines, Bahrain, Gambia, Colombia, Canada, Azerbaijan, Tibet, Kazakhstan, Finland, Ecuador, Greece, Mexico, Lithuania, Algeria, Poland, Jordan, Peru, Hong Kong, thailand, Gabon, Oman, Croatia, Kuwait, Japan, Netherlands, Australia, cyprus, Bangladesh, Serbia, Poland, Russia, Zimbabwe, Puerto Rico, Yemen, Costa Rica, Switzerland, Namibia, Bhutan, Macau, Bolivia, Czech Republic, Iran, Qatar, Ukraine, United Arab Emirates, Denmark, Hungary, Morocco, Egypt, Bulgaria, India, Mongolia, Austria, Thailand, Nigeria, Israel, Turkey, Vietnam, United Kingdom.

FAQ’s About Super Duplex Steel S32750 tube fittings

Super Duplex refers to a high-performance stainless steel alloy typically S32750 / S32760 (also known as Super Duplex 2507) that combines both ferritic and austenitic microstructures. This gives it superior strength, toughness, and corrosion resistance compared to standard stainless-steel grades.
Always verify that the material grade is listed clearly (e.g., S32750 or S32760 / UNS 1.4410 or 1.4501), and that the supplier adheres to recognized standards (ASTM/ASME). Request material test certificates (MTC), and check dimensions and specifications match standard size/pressure ratings for compression or instrumentation fittings.
Yes. Super Duplex fittings are widely used for both instrumentation tubing (for process control, chemical feeds, instrumentation lines) and hydraulic lines, especially in environments requiring high strength, corrosion resistance, and leak-free connections.