Nascent Fittings Inc.·Duplex Steel
Duplex Steel COUPLING
Socket weld & threaded forged fittings to ASME B16.11 in SS, CS, alloy & nickel. Elbows, tees, unions, couplings with MTCs and global shipping.
- Material
- Duplex Steel
- Size
- 1/4" NB
- Standard
- ASME B16.11
- Corrosion
- Excellent
About
Duplex Steel Forged Fittings
Product overview combined with Duplex Steel material context for project selection.
Manufacturing note
Couplings are a forged steel fitting used to connect two lengths of pipe, and Half-coupling is screwed onto the pipe, while the other end is made to be tightly inserted, or welded, onto the other end to pipe or vessel. A coupling is a mechanical device that connects similar or dissimilar shafts in machines to transmit power and movement. It is usually a temporary connection (but can be permanent in some cases) and capable of removal for service or replacement. Nascent Fittings is a globally recognized Manufacturer and Exporter of Forged Couplings. These couplings are manufactured under the close supervision of experienced professionals. Nascent employs sophisticated technology and cutting-edge tools to ensure the highest possible level of product quality. They also have a highly skilled and well-trained team of experts who use their experience to guide workers at all stages of the manufacturing process, ensuring that only the highest quality, most accurate products are developed in the industry.
Typical applications
- Oil & Gas
- Petrochemical
- Chemical Processing
- Power Generation
- Marine
- Desalination
Configurations
Duplex Steel Forged Fittings types
Open a type for drawings-aligned specifications.
Material scope
Duplex Steel specification
Dimensional and grade range typically supplied for COUPLING in this material.
- Grade
- Duplex Steel: ASTM A 182 F -51, F 53, F 55
- Grade
- Copper Nickel: C70600(90:10), C71500(70:30), C71640
- Grade
- Hastelloy: UNS N10276, N06022, N10665, N06455,
- Grade
- Aluminium: ASTM B247, B361 – 2024, 6061, 6063, 6101, 7075.
- Grade
- Titanium: ASTM B381 – Grade 1, Grade 2, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 19, Grade 23
- Services
- Hot Dip Galvanizing, Sand Blasting, Special Threading.
Duplex Steel grades
Available grades for Forged Fittings
Drawn from the Duplex Steel catalog and this product’s material specification.
F44
UNS S31254
High alloy duplex stainless steel.
F45
UNS S31803
Duplex stainless steel with excellent corrosion resistance.
F51
UNS S31803
Most common duplex grade.
F60
UNS S32205
High strength duplex steel.
F61
UNS S32550
Premium duplex steel for aggressive service.
UNS S31803
UNS S31803
Standard duplex stainless (22Cr) commonly supplied to ASTM A815 / A182 F51.
Best for · General duplex piping
UNS S32205
UNS S32205
Modern dual-certified duplex chemistry aligned with F60 / 2205 practice.
Best for · High-strength duplex service
UNS S32750
UNS S32750
Super duplex 25Cr grade for severe chloride and high-strength applications.
Best for · Super duplex chloride resistance
UNS S32760
UNS S32760
Super duplex with tungsten additions for aggressive seawater and process media.
Best for · Aggressive seawater and process fluids
Also available in
Other materials for this product
View Forged Fittings in another material grade family.
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Low Temperature Carbon Steel
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Nickel Alloy
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Material
Monel
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Material
Hastelloy
Forged Fittings
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Material
Stainless Steel
SMO 254
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Material
Alloy Steel
Forged Fittings
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Material
Carbon Steel
Forged Fittings
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Material
Copper Alloy
UNS C70600 (Cu-Ni 90/10) · UNS C71500 (Cu-Ni 70/30)
ViewCompliance
Standards & certificates
Specifications and documentation typically referenced for this product line — details from our shared compliance catalog.
Standards
4ASME B16.11
ASMEForged fittings — socket-welding and threaded.
- Scope
- Ratings, dimensions, tolerances, marking and material requirements for forged fittings.
- Applies To
- Socket-weld and threaded elbows, tees, couplings, unions, plugs and bushings
- Class Range
- Class 2000, 3000, 6000 (and related pressure classes)
MSS SP-95
MSSSwage(d) nipples and bull plugs.
- Scope
- Dimensions and marking for swage nipples and bull plugs.
- Applies To
- Concentric and eccentric swage nipples, bull plugs
ASTM A182
ASTMForged or rolled alloy and stainless steel pipe flanges, fittings, valves and parts.
- Scope
- Forged and rolled stainless, alloy and duplex steel components for high-temperature service.
- Applies To
- Flanges, fittings, valves and pressure parts
- Typical Grades
- F304/L, F316/L, F11, F22, F91, F51/F60 and related
ASME SA182
ASMEASME equivalent of ASTM A182 for forged stainless and alloy components.
- Scope
- Boiler and pressure vessel code adoption of ASTM A182 material requirements.
- Related
- ASTM A182
Certificates
5EN 10204 3.1
Mill test certificate with inspection by the manufacturer’s authorized inspection representative, independent of manufacturing.
- Type
- Inspection document (MTC)
- Scope
- States chemical analysis, mechanical test results and heat / lot identification for the supplied material.
- Documentation
- EN 10204 Type 3.1
- Benefit
- Provides traceable material evidence required on most industrial RFQs.
NACE MR0175
Materials for use in H₂S-containing environments in oil and gas production.
- Type
- Service / sour-service requirement
- Scope
- Limits hardness, microstructure and material selection for sulfide stress cracking resistance.
- Applies To
- Carbon, alloy and CRA piping products ordered for sour service
- Benefit
- Supports upstream oil & gas projects specifying sour-service compliance.
ISO 9001
Quality Management System certification.
- Type
- Quality Management System
- Scope
- Demonstrates a documented QMS covering process control, traceability and continual improvement across manufacturing and supply.
- Benefit
- Assures buyers of consistent product quality and controlled production practices.
- Issued As
- Third-party accredited certificate
PED
Pressure Equipment Directive compliance for equipment placed on the EU market.
- Type
- Regulatory conformity
- Scope
- Design and conformity assessment requirements for pressure equipment and assemblies in the European Union.
- Benefit
- Enables supply of pressure-rated components into EU projects when PED conformity is required.
- Related
- CE marking / Notified Body routes as applicable
IBR
Indian Boiler Regulations approval for boiler-quality piping materials and components.
- Type
- Regulatory approval
- Scope
- Materials and components intended for use under Indian boiler installations.
- Benefit
- Required for many power and process projects under IBR jurisdiction in India.
Manufacturing
Crafted with care
Workshop and production views for Duplex Steel COUPLING — the same craftsmanship photos from our plant archives, shown in webp.
3 photos
People also ask
Questions about Forged Fittings
Nascent Fittings Inc. answers common buyer questions for this line.
Does Nascent Fittings Inc. manufacture Forged Fittings?+
Yes. Nascent Fittings Inc. manufactures and supplies Forged Fittings for industrial piping projects, with material grades and sizes aligned to project specifications.
Can Nascent Fittings Inc. export Forged Fittings worldwide?+
Yes. We export Forged Fittings globally with standard export packaging, material test certificates, and documentation support for international shipments.
What materials are available for Forged Fittings?+
Forged Fittings is available in carbon steel, alloy steel, stainless steel, duplex, nickel alloys, copper alloys, aluminium, titanium and other project-specific materials as required.
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