High Quality Duplex/Super Duplex Buttweld Pipe Fittings

S31803/S32205 • S32750/S32760 • Strength • Sealing • Durability

Premium Duplex & Super Duplex Buttweld Pipe Fittings by Ratnadeep Steel & Engg. Co.

Ratnadeep Steel & Engg. Co. is a renowned manufacturer, exporter, and supplier of high-quality Duplex and Super Duplex Steel Buttweld Pipe Fittings, based in Mumbai, India. Engineered using superior duplex-grade raw materials and advanced forming techniques, our fittings undergo rigorous quality inspection to ensure exceptional strength, corrosion resistance, and long-term service performance in highly demanding environments. All fittings are manufactured in compliance with major international standards, ensuring reliability and global acceptance.

We specialize in supplying a complete range of Duplex Steel S31803 / S32205 and Super Duplex Steel S32750 / S32760 buttweld fittings, offering outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. Our duplex and super duplex fittings are available in all standard forms, including elbows, tees, concentric reducers, eccentric reducers, caps, crosses, long stub ends, short stub ends, and pipe bends, with customized dimensions also available on request.

Thanks to their excellent mechanical strength and superior corrosion resistance, our Duplex and Super Duplex Buttweld Fittings are widely used in industries such as offshore drilling, desalination plants, chemical processing, petrochemicals, oil & gas, marine engineering, power generation, and pulp & paper. These fittings are designed to perform reliably under high pressure, high temperature, and aggressive corrosive environments.

Guided by a highly skilled workforce and state-of-the-art manufacturing facilities, Ratnadeep Steel & Engg. Co. is committed to delivering precision-engineered Duplex and Super Duplex Buttweld Pipe Fittings that meet exact customer specifications. Our focus on quality, durability, and timely delivery has made us a trusted global supplier of high-performance duplex and super duplex fittings.

Our Duplex and Super Duplex Buttweld Fittings offer superior toughness, excellent corrosion resistance, high pressure ratings, and reliable leak-proof performance, making them ideal for critical and safety-sensitive applications.

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Explore Duplex Steel UNS S31803 & S32205 Buttweld Pipe Fittings

Duplex Steel UNS S31803 & S32205 Buttweld Pipe Fittings

Explore Super Duplex Steel UNS S32750 & S32760 Buttweld Pipe Fittings

Super Duplex Steel UNS S32750 & S32760 Buttweld Pipe Fittings

Super Duplex Steel S32750 Buttweld Fittings

High-performance super duplex with very high strength
PREN > 40 for exceptional pitting corrosion resistance
Excellent resistance to chloride stress SCC
Designed for extremely corrosive environments
Suitable for high-pressure, high-temperature applications
Widely used in offshore oil & gas and subsea equipment
Minimum tensile strength: ~795 MPa
Used for elbows, reducers, tees, stub ends, and bends
Long-term performance in seawater & acidic media

Super Duplex Steel S32760 Buttweld Fittings

Enhanced version with tungsten for extra corrosion resistance
High strength & excellent impact toughness
Outstanding performance in aggressive chloride settings
Excellent resistance to erosion–corrosion
Used in chemical tanks, heat exchangers & marine systems
Minimum tensile strength: ~800 MPa
Ideal for pipelines in offshore & subsea applications
Reliable for high-pressure flow lines & manifolds
Best choice for harsh & highly corrosive industries

Duplex Steel S31803 Buttweld Fittings

Balanced duplex (50% ferrite, 50% austenite) structure
Excellent resistance to pitting and crevice corrosion
Higher strength vs. 300-series stainless steels
Good weldability (requires controlled heat input)
Superior stress corrosion cracking resistance
Used in chemical processing, oil & gas, and refineries
Suitable for pipelines, bends, elbows, and tees
Minimum tensile strength: ~620 MPa
Ideal for chloride-rich and abrasive environments

Duplex Steel S32205 Buttweld Fittings

Improved version of S31803 with balanced chemistry
Higher PREN values for enhanced corrosion resistance
Superior resistance to chloride-induced SCC
Excellent toughness even at low temperatures
High mechanical strength and pressure handling
Used in offshore platforms and desalination plants
Minimum tensile strength: ~650 MPa
Widely used in pipe spools, manifolds, and headers
Long service life in harsh sea-water environments

Our Forged Pipe Fittings are manufactured using advanced forging processes and undergo stringent quality checks to ensure exceptional strength, durability, and long service life. Each fitting is meticulously inspected using key NDT techniques such as radiographic testing (RT), ultrasonic testing (UT), hydrostatic testing, and visual/dimensional examination. We also conduct detailed chemical composition analysis and mechanical property testing to ensure material compliance with strict industry standards.

During the forging and finishing stages, every fitting is closely monitored to eliminate defects such as misalignment, surface irregularities, and dimensional inconsistencies. This guarantees perfect joint integrity and high-performance reliability in pipelines carrying high pressures, extreme temperatures, and corrosive media. All our forged fittings fully comply with ASME, ASTM, MSS-SP, and relevant international specifications, making them a trusted choice for critical piping systems worldwide.

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Looking for high-quality Duplex Steel S31803/S32205 and Super Duplex S32750/S32760 Buttweld Pipe Fittings? Get in touch with us today.