Super Duplex Steel Flanges Manufacturer
Super Duplex Stainless Steel Flanges are tough, corrosion-resistant connectors for critical piping systems. Midland Alloys is a reliable Super Duplex Flanges supplier, providing high-quality products that meet ASTM A182 / ASME SA182 standards. We manufacture and export Super Duplex UNS S32750 and S32760 Flanges in sizes ranging from 1/8″NB to 48″NB. These flanges are forged, heat-treated, and machined, then hot worked between 954°C and 1149°C, offering a high melting point of 1350°C.
We offer different types of super duplex forged flanges like slip-on, socket weld, blind, lapped, screwed, weld neck, and reducing flanges. Each serves a different need, depending on pressure, pipe structure, and accessibility. Our super duplex steel flanges dimensions, shapes, and thicknesses can be customized to suit any project needs.
Benefits of ASTM A182 Super Duplex Flanges
Super Duplex Flanges offer a combination of strength and corrosion resistance, making them ideal for harsh environments.
- Handle extreme chloride exposure like seawater and brine systems.
- Lightweight flanges with high strength due to nitrogen-enriched structure.
- Better fatigue resistance for systems with vibration and movement.
- Better for cold service due to excellent low-temperature toughness.
- Reduced wear and longer service life in harsh industrial systems.
- Help maintain flow integrity in chemical plants and power stations.
- Excellent compatibility with dissimilar metals in complex piping setups.
ASTM A182 Super Duplex Flanges Specification
1/2" (15 NB) to 48" (1200NB)
ASTM A182 / A240 & ASME SA182 / SA240
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Threaded / Screwed / Forged / Plate
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Forging, Rolling, Casting
FNPT, NPT, BSPT, MNPT, BSPP
Contact us today to discuss how Super Duplex Flanges can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Super Duplex Flanges Grades We Offer
Duplex vs Super Duplex Stainless Steel Flanges
Super duplex stainless steel flanges offer higher corrosion resistance and strength than duplex steel flanges. Super duplex has more chromium, molybdenum, and nitrogen, giving it better durability in seawater, chemical plants, and offshore use. Super duplex forged flanges are ideal for high-pressure systems, while duplex flanges are suitable for general industrial pipelines where cost is a bigger factor.
Plate
Shear
Press
Inspection
Lathe
Drilling
Cleaning
Flange
Inspection
Analytic
Marking
Packing & Shipping
ANSI B16.5 Super Duplex Flanges Uses
Super duplex stainless steel flanges are used in oil and gas, petrochemicals, paper, and water treatment industries. In the oil and gas industry, they connect underwater pipelines to high-pressure topside systems. Petrochemical plants handle acidic and chloride-containing process fluids. In the paper industry, they are used in bleaching machines that are exposed to harsh chemicals. These flanges are used in flue gas scrubber and reactor systems to control pollution. Desalination plants use them for seawater filtration lines. They are also utilized to construct chemical tanks, pressure vessels and heat exchangers.
Why Choose Midland Alloys Inc. for BS 4504 Super Duplex Flanges
We are ISO 9001:2015, PED 2014/68/EU certified, and can provide EN 10204 3.1/3.2 Mill Test Certificates. We conduct third-party inspections by TÜV, BV, SGS, and DNV to ensure compliance and transparency.
We work with EPC contractors, marine operators, engineering firms, and chemical companies to meet complex specifications. Our testing covers hydrostatic, ultrasonic, radiographic, and PMI checks, along with mechanical tests like tensile, hardness, flattening, and bend testing.
Our clients across the Middle East, Europe, and Southeast Asia choose us again and again for our product quality, proper documentation, and understanding of export rules. For accurate super duplex flanges price per kg, get in touch for the best deal without compromising standards.
FAQ
Super duplex 2507 flanges are stronger and more corrosion-resistant than duplex 2205 due to higher alloy content.
ASTM A182 and ASME SA182. These ensure high strength, heat resistance, and quality performance.
Yes. They ensure clean and strong welds when proper welding procedures are followed.
