Duplex Steel S31803 Flanges Manufacturer in Dubai, UAE

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Al Vishwas Nickel Alloys, headquartered in Dubai, UAE, distinguishes itself as a leading manufacturer and supplier of premium-grade Duplex Steel S31803 Flanges, engineered for demanding industrial uses. The company applies advanced manufacturing methods and stringent quality control to produce flanges that perform exceptionally in corrosion resistance, mechanical strength, and durable dependability. Al Vishwas Nickel Alloys offers a wide selection of Duplex Steel S31803 Flanges across multiple sizes, pressure ratings, and specifications to meet varied project requirements. Concentrating on sectors such as oil and gas, petrochemicals, marine engineering, power generation, and chemical processing, the company has earned a reputation for supplying sturdy, dependable, and high-performing piping components.

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Duplex Steel S31803 Flanges feature a well-balanced ferritic–austenitic microstructure, generally composed of 21–23% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, and nitrogen to enhance strength and corrosion resistance. This distinctive composition provides outstanding protection against pitting, crevice corrosion, and stress corrosion cracking triggered by chlorides. From a mechanical standpoint, S31803 Flanges offer high tensile and yield strength, exceptional toughness, and notable fatigue resistance. Their reliable performance under high-pressure conditions, temperature fluctuations, and corrosive settings makes them ideal for critical piping and structural applications requiring dependability and lasting durability.

Duplex Steel S31803 Flanges Specifications

Specifications	ASTM A182 / ASME SA182
Size	1/8″ NB TO 48″ NB
Standards	ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure	150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standard	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Grades	S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61

Duplex Steel S31803 Flanges Chemical Composition

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

Duplex Steel S31803 Flanges Mechanical Properties

Grades	Density (g/cm 3)	Density (lb/in 3)	Melting Point (°C)	Melting Point (°F)
S31803	7.805	0.285	1420 – 1465	2588 – 2669

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Largest Manufacturer and Supplier of Duplex Steel S31803 Flanges in Dubai, UAE

At Al Vishwas Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Flanges in Dubai, UAE, delivering advanced solutions for every piping requirement you have. Our modern manufacturing facilities are strategically situated in the UAE, enabling us to keep an extensive stock of more than 16,000 tons of top-quality materials on hand and ready to ship. We are committed to supplying outstanding products and services, guaranteeing dependability and excellence for our worldwide customers.

Types of Duplex Steel S31803 Flanges

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

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Duplex Steel S31803 Flanges Uses

Duplex Steel S31803 Flanges are widely used across industries that demand exceptional corrosion resistance, strength, and durability. Within the oil and gas sector, they play a critical role in pipelines, valves, offshore platforms, and subsea systems that endure extreme conditions. Chemical and petrochemical plants employ them in reactors, heat exchangers, and process lines dealing with aggressive chemicals. The marine and shipbuilding sectors rely on S31803 Flanges for seawater applications, guaranteeing that their structures can endure the toughest environments while preserving performance and safety.

Duplex Steel S31803 Flanges Manufacturer in Dubai, UAE

Table of Contents

Duplex Steel S31803 Flanges Specifications

Duplex Steel S31803 Flanges Chemical Composition