Duplex Steel Pipe Fittings

Duplex steel pipe fittings are two-phase alloy connectors produced from a balanced combination of austenite and ferrite microstructures. These fittings are available in several grades, such as UNS S31803, S32205, S32750, and S32760. Duplex stainless steel pipe fittings provide high tensile strength, strong resistance to chloride corrosion, and excellent protection against stress corrosion cracking. Their composition consists of 21-26% chromium, 2.5-4% molybdenum, and additional nitrogen, which provides performance that standard austenitic grades cannot meet on their own. Due to these properties, duplex stainless steel pipe fittings are commonly used in oil and gas, chemical processing, desalination, and marine engineering, where piping systems perform under corrosive conditions and high pressure.

Duplex Steel Pipe Fittings Prices

Duplex steel pipe fitting prices depend on grade, size, wall schedule, and order quantity. Below are the 2 primary pricing factors to consider before sourcing.

Approximate Price Range

Standard duplex pipe fittings are priced between Rs. 540 and Rs. 810 per piece for common grades and sizes. Super Duplex grades (S32750, S32760) and heavy-schedule fittings will cost more based on raw material content and machining complexity.

Factors Affecting Price

• Grade selection: Higher-alloyed grades, such as S32750 and S32760, cost more as they contain more chromium, molybdenum, and nitrogen.

• Size and schedule: Fittings in larger NPS or thicker wall schedules (SCH 80S, SCH 160, SCH XXS) require additional material and machining, which increases per-unit costs.

• Order quantity: Bulk and repeat project orders attract volume pricing. Request a project-specific duplex pipe fitting price quote for accurate figures.

Duplex Steel Pipe Fittings Grades

Duplex steel pipe fittings grades are available in 3 primary grades to meet the standard and high-corrosion service conditions.

• Duplex Steel S32205 Pipe Fittings
• Duplex Steel S31803 Pipe Fittings
• Duplex Steel 2205 Pipe Fittings

Types Of Duplex Steel Pipe Fittings

Duplex pipe fittings are available in 8 standard forms to handle direction changes, flow reduction, and pipe termination across all connection types.

• Elbows (45°, 90°, 180°)
• Tees (Equal/Reducing)
• Reducers (Concentric/Eccentric)
• Caps & End Caps
• Stub Ends (Long/Short)
• Crosses
• Couplings & Unions
• Forged/Olet Fittings

Duplex Steel Pipe Fittings Specifications

Each duplex stainless steel pipe fitting we supply conforms to applicable ASTM and ASME standards. Refer to the table below for full technical details.

Duplex Steel Pipe Fittings Size Chart

The size chart below covers NPS 1/8" to 12" with outside diameter values in both millimetres and inches.

Schedule Chart Of Duplex Steel Pipe Fittings

Select the right wall schedule based on operating pressure. Higher schedule numbers indicate greater wall thickness and higher pressure capacity.

Key Features Of Duplex Steel Pipe Fittings

Duplex pipe fittings deliver 13 performance advantages that make them the preferred choice for corrosive, high-pressure, and structurally demanding piping systems.

• High Strength
• Excellent Corrosion Resistance
• Stress Corrosion Cracking Resistance
• Enhanced Fatigue Resistance
• High Impact Toughness
• Thermal Resistance
• Versatility
• Reduced Maintenance
• Weldability
• Cost-Effectiveness
• Lower Thermal Expansion
• Erosion-Corrosion Resistance
• Good Surface Finish

Applications Of Duplex Steel Pipe Fittings

Duplex stainless steel pipe fittings are used across 13 industries where piping systems handle aggressive chemicals, saltwater, high pressure, or strict hygiene requirements.

• Chemical Processing
• Marine Engineering
• Oil and Gas Industry
• Power Generation
• Pulp and Paper Industry
• Desalination Plants
• Aerospace
• Water Treatment
• Food and Beverage Processing
• Mining and Mineral Processing
• Renewable Energy
• Architecture and Infrastructure
• Pharmaceutical Industry

How To Choose The Right Duplex Stainless Steel Pipe Fittings Supplier And Manufacturer?

Choosing the right duplex pipe fitting supplier determines material quality, delivery reliability, and project compliance. Evaluate 4 key areas before placing an order.

Selecting the right supplier and manufacturer:

Shortlist duplex pipe fitting suppliers who hold documented mill certifications and maintain full material traceability from heat to fitting. A supplier with an established export record and a broad grade portfolio reduces sourcing risk on large or long-term projects.

Technical considerations:

Confirm that the duplex stainless steel pipe fittings supplier you select can provide the exact grade, like S31803, S32205, or S32750, along with the size, wall schedule, and end connection your system requires. Request Material Test Reports (MTRs) and verify that the pressure ratings align with your system design.

Evaluating supplier credibility:

Check ISO certifications, third-party audit reports, and available customer references. A reliable duplex steel pipe fittings manufacturer and supplier provides EN 10204 3.1 or 3.2 Mill Test Certificates without hesitation.

Procurement strategy:

For large-volume projects, negotiate staggered delivery schedules and locked pricing to control cost. Always request a duplex pipe fitting price quote that separately breaks down material cost, surface finish, testing charges, and packaging.