Krygen Metalloys stands among the trusted manufacturers, suppliers, stockists, and exporters of premium-grade Duplex Steel S31803 Tubes. Known for their excellent corrosion resistance, high strength, and superior durability, these tubes are engineered to perform in some of the most demanding industrial environments. Our products meet international quality standards, ensuring reliability and consistency for clients worldwide. By combining advanced manufacturing techniques with stringent quality checks, we deliver tubing solutions that exceed expectations in both performance and lifespan.
The Duplex Steel S31803 alloy offers a balanced microstructure of austenite and ferrite, giving it remarkable resistance to stress corrosion cracking, pitting, and crevice corrosion. This makes it ideal for use in environments where conventional stainless steels may fail. Krygen Metalloys ensures every tube is precision-engineered with exact dimensional tolerances, smooth internal finishes, and exceptional mechanical properties. Whether in high-pressure systems or corrosive atmospheres, our tubes maintain structural integrity over extended service periods.
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Our Duplex Steel S31803 Tubes are widely used across industries such as Oil & Gas, Petrochemicals, Construction, Food Processing, and Pharmaceuticals. In the oil and gas sector, they are deployed in subsea pipelines, risers, and offshore platforms where both strength and corrosion resistance are critical. In food processing and pharmaceuticals, their hygienic properties and ease of cleaning make them a safe and reliable choice. The construction industry benefits from their ability to withstand extreme weather and chemical exposure without degradation.
As global stockists and exporters, we maintain an extensive inventory to ensure timely supply to clients across continents. Our logistics network enables fast, hassle-free delivery to projects in any location, from high-rise construction sites to remote offshore rigs. By partnering with Krygen Metalloys, customers gain access to both technical expertise and an unwavering commitment to meeting project timelines without compromising on quality.
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Compliance with international standards such as ASTM, ASME, and ISO is at the core of our manufacturing process. Each batch undergoes rigorous inspection and testing, including hydrostatic, ultrasonic, and chemical composition checks. This dedication to quality assurance not only safeguards performance but also instills confidence in end users who depend on our products for mission-critical operations. We understand that in industries like oil & gas or pharmaceuticals, product failure is simply not an option.
With a customer-focused approach, Krygen Metalloys combines innovation, technical knowledge, and market insight to offer Duplex Steel S31803 Tubes that set the benchmark for quality. Our team works closely with clients to understand their specific requirements, offering tailored solutions that align with project demands. By choosing us, you invest in products that deliver exceptional performance, backed by a company that values long-term partnerships over short-term gains.
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Duplex Steel S31803 Tubes Specification
Specifications : | ASTM A790, A789 / ASME SA790, SA789 |
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Seamless Size : | 1 / 8" NB - 24" NB |
ERW Size : | 1 / 8" NB - 36" NB |
EFW Size : | 6" NB - 100" NB |
Outer Diameter : | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB |
Length : | Single Random, Double Random & Required Length |
Schedule : | SCH20, SCH30, SCH20, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
Types : | Seamless / ERW / EFW / Welded / Fabricated / LSAW Pipes |
Form : | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
Mechanical Properties of Duplex Steel S31803 Tubes
Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
---|---|---|---|---|
S31803 | 7.8 | 0.281 | 1350 | 2460 |
Chemical Composition of Duplex Steel S31803 Tubes
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
---|---|---|---|---|---|---|---|---|---|---|
S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
Application of Duplex Steel S31803 Tubes
