Duplex Steel S31803 Flanges Manufacturer in Cairo, Egypt

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Tanvir Nickel Alloys, based in Cairo, Egypt, stands out as a leading manufacturer and supplier of top-notch Duplex Steel S31803 Flanges. These flanges are celebrated for their remarkable strength, durability, and resistance to corrosion. With a focus on duplex stainless steels, Tanvir ensures that their flanges meet rigorous industrial standards, guaranteeing dependable performance even in the toughest conditions. Designed to endure harsh chemical, marine, and high-pressure environments, Duplex Steel S31803 Flanges are crafted using cutting-edge manufacturing techniques and stringent quality control measures. This commitment results in flanges that create secure, long-lasting connections, making them perfect for critical piping, structural, and industrial systems across sectors like chemical processing, oil and gas, and marine applications.

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The composition of Duplex Steel S31803 Flanges includes around 22% chromium, 5–6% nickel, 3% molybdenum, and the remainder being iron, with small amounts of nitrogen added to boost mechanical strength and corrosion resistance. On a mechanical level, these flanges showcase impressive tensile and yield strength, outstanding toughness, and exceptional resistance to stress corrosion cracking, pitting, and crevice corrosion. Their unique duplex microstructure combines both ferritic and austenitic properties, ensuring durability, stability, and reliable performance under high pressure, temperature fluctuations, and aggressive chemical conditions, making them ideal for demanding industrial piping applications.

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 Cairo, Egypt

At Tanvir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Flanges in Cairo, Egypt, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Egypt, 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 Flanges

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

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Duplex Steel S31803 Flanges Uses

You’ll find Duplex Steel S31803 Flanges widely utilized in industries such as chemical processing, petrochemical, oil and gas, marine, and power generation, thanks to their excellent corrosion resistance and mechanical attributes. They are perfect for connecting pipelines, valves, pumps, pressure vessels, and other components that come into contact with chloride-laden or corrosive fluids. These flanges help lower maintenance costs, boost operational safety, and guarantee long-term reliability in challenging environments. Their strength, durability, and ability to withstand harsh conditions make them indispensable for high-performance applications.

Duplex Steel S31803 Flanges Manufacturer in Cairo, Egypt

Table of Contents

Duplex Steel S31803 Flanges Specifications

Duplex Steel S31803 Flanges Chemical Composition