Duplex Steel S31803 Tube Fittings Manufacturer in Jakarta, Indonesia

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Fajar Metals, located in Jakarta, Indonesia, stands out as a top manufacturer and supplier of high-quality Duplex Steel S31803 Tube Fittings. These fittings are crafted for tough applications across various industries, including oil & gas, petrochemical, marine, and power generation. The Duplex Steel S31803 is known for its remarkable blend of strength, corrosion resistance, and toughness, making it perfect for high-pressure and high-temperature settings. Manufactured to meet international standards, these tube fittings guarantee secure, leak-proof connections in critical piping systems. Fajar Metals offers both customized and standard fittings, ensuring they meet the strict demands of clients while providing reliability and durability in harsh conditions.

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Duplex Steel S31803 Tube Fittings are made up of 21–23% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, nitrogen, and the rest being iron. The unique dual-phase austenitic-ferritic structure of S31803 gives it outstanding resistance to stress corrosion cracking, pitting, and crevice corrosion. These fittings boast a tensile strength between 620 to 880 MPa, a yield strength of around 450 MPa, and an elongation of 25%. Their impressive mechanical strength and ability to withstand harsh environments, including high-pressure and chloride-rich conditions, make them perfect for demanding applications that require long-lasting performance and reliability in both chemical and marine sectors.

Duplex Steel S31803 Tube Fittings Specifications

ASTM A815 WPS S31803 Pipe Fittings Standard Dimensions ASME/ ANSI B16.9, ASME B16.28, MSS-SP-43, BS1560, BS4504, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Specifications ASTM A815 / ASME SA815
Duplex Steel S31803 Elbow Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D. Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO
A815 WPS S31803 Pipe Fittings Thickness SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
ASTM A815 WPS 31803 Pipe fittings Thread NPT, BSPT, BSPP
Duplex Steel S31803 Forged Fittings Types Seamless / Welded / ERW / Fabricated UNS S31803 DSS Pipe Fittings

Duplex Steel S31803 Tube Fittings Chemical Composition

C N P Si Mn Mo Fe Cr S Ni
1.0 0.03 0.02 2.0 3.0 – 3.5 22.0 – 23.0 0.03 4.5 – 6.5 0.14 – 0.2 Bal

Duplex Steel S31803 Tube Fittings Mechanical Properties

Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
7.8 g/cm3 1350 °C (2460 °F) Psi – 80000 , MPa – 550 Psi – 116000 , MPa – 800 15 %

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Largest Manufacturer and Supplier of Duplex Steel S31803 Tube Fittings in Jakarta, Indonesia

At Fajar Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803Tube Fittings in Jakarta, Indonesia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Indonesia, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.

Types of Duplex Steel S31803 Tube Fittings

Duplex Tube S31803 Fittings
Duplex S31803 Welded Tube Fittings
Duplex Steel S31803 Compression Tube Fittings
Duplex S31803 Concentric Reducer Fittings
Duplex S31803 Buttweld Tube Fittings
Duplex S31803 Instrumentation Fittings

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We offer These Products as per DIN, ISO, JIS or ANSI Standard.

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Duplex Steel S31803 Tube Fittings Uses

Duplex Steel S31803 Tube Fittings find extensive use in industries that need robust, corrosion-resistant connections in high-pressure systems. In the oil and gas sector, these fittings are crucial for wellhead and pipeline connections, where high strength and resistance to stress corrosion cracking are vital. In petrochemical and chemical plants, they are essential for high-pressure reactor systems and fluid handling equipment.


Aerospace Industry

Defense Industy

Food Processing Industry

Construction Industry

Oil and Gas Industry

Petro Chemical Industry