Duplex Steel Flanges Manufacturer in Istanbul, Turkey

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Hakan Nickel Alloys, located in Istanbul, Turkey, is a reputable manufacturer and supplier of Duplex Steel Flanges, providing robust, corrosion-resistant solutions for essential piping systems. With a commitment to quality, precise dimensions, and top-notch material performance, the company caters to various industries, including oil and gas, petrochemicals, marine, and water treatment. The Duplex Steel Flanges from Hakan Nickel Alloys are designed to ensure strong, leak-proof connections even under high pressure and challenging environmental conditions. By utilizing cutting-edge manufacturing methods and strict quality control, the company produces flanges that comply with international standards, guaranteeing reliable performance in the toughest industrial settings.

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Duplex Steel Flanges are typically crafted from grades like Duplex 2205, which consists of about 22% chromium, 5–6% nickel, 3% molybdenum, and nitrogen. This well-balanced austenitic-ferritic structure provides the flanges with impressive tensile strength (620–880 MPa) and excellent yield strength, along with remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. Duplex flanges excel in environments rich in chlorides, acids, and high temperatures. They also boast superior fatigue strength compared to standard stainless steels. The material is weldable, non-magnetic, and thermally stable, making these flanges perfect for critical applications that demand both mechanical strength and long-lasting corrosion resistance.

Duplex Steel 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 Flanges Chemical Composition

GradeDuplex Steel Flanges
C0.030 max
Mn2.00 max
Si1.00 max
P0.030 max
S0.020 max
Cr22.0 – 23.0
Mo3.0 – 3.5
Ni4.50 – 6.50
N0.14 – 0.20
Fe63.72 min

Duplex Steel Flanges Mechanical Properties

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

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Largest Manufacturer and Supplier of Duplex Steel Flanges in Istanbul, Turkey

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

Duplex Steel Slip-On Flanges
Duplex Steel Threaded Flanges
Duplex Steel Weld Neck Flanges
Duplex Steel Socket Weld Flanges
Duplex Steel Blind Flanges
Duplex Steel Lap Joint Flanges

Contact us to get a quick quote for your requirement.

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

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Duplex Steel Flanges Uses

Duplex Steel Flanges find extensive use in high-performance piping systems across oil and gas platforms, offshore rigs, and refineries where high pressure and corrosion resistance are paramount. In marine settings, they are well-suited for seawater handling, ballast systems, and firewater lines. The chemical and petrochemical industries depend on them for processing applications, ensuring safety and efficiency in their operations.

Aerospace Industry

Defense Industy

Food Processing Industry

Construction Industry

Oil and Gas Industry

Petro Chemical Industry