Steelveron

Duplex and Super Duplex Steel Flanges

Steelvron is a trusted Duplex Steel Flanges Supplier, Manufacturer, and Exporter, providing high-performance flange solutions designed to meet stringent international standards. Our Duplex and Super Duplex Steel Flanges are engineered to deliver superior mechanical strength, excellent durability, and outstanding resistance to chloride-induced stress corrosion, pitting, and crevice corrosion.

Overview

As a leading Duplex Steel Flanges Supplier, Steelvron offers a wide range of flanges including Duplex Steel Flanges (Grade 2205) and Super Duplex Steel Flanges (Grade 2507), suitable for critical applications in the oil & gas, petrochemical, chemical processing, marine, water treatment, and power generation industries.

Our Duplex & Super Duplex Steel Flanges combine the best properties of austenitic and ferritic stainless steels, ensuring high tensile strength, excellent fatigue resistance, and long-term reliability in harsh environments. All flanges are manufactured in compliance with ASTM, ASME, DIN, EN, and JIS standards.

We provide flanges in multiple types, such as Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, and Long Weld Neck Flanges. Each flange is precision-engineered, thoroughly tested, and customized to meet client specifications, making Steelvron a globally recognized Duplex Steel Flanges Supplier for industrial and marine applications.

Technical Specifications of Duplex and Super Duplex Steel Flanges

Standards:

ASTM A182 / A240, ASME SA182, DIN, EN, JIS, BS, ANSI

Flanges Available:

Duplex 2205 Flanges, Super Duplex 2507 Flanges

Size Range:

½” (15 NB) to 48” (1200 NB)

Pressure Ratings:

Class 150, 300, 600, 900, 1500, 2500

Face Type:

Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

Finish:

CNC Machined, Smooth Finish, Serrated Finish

Forms:

Weld Neck, Slip-On, Blind, Lap Joint, Threaded, Socket Weld, Long Weld Neck

Chemical Properties Of Duplex and Super Duplex Steel Flanges

Flange Name	C (max)	Mn (max)	Si (max)	P (max)	S (max)	Cr	Ni	Mo	N
Duplex 2205 Flanges	0.03	2.0	1.0	0.03	0.02	22–23	4.5–6.5	3–3.5	0.14–0.20
Super Duplex 2507 Flanges	0.03	1.2	0.8	0.035	0.02	24–26	6–8	3–5	0.3–0.35

Physical Properties of Duplex and Super Duplex Steel Flanges

Property

Duplex 2205 Flanges

Super Duplex 2507 Flanges

Density (g/cm³)

7.8

7.8

Melting Point (°C)

1350–1450

1350–1450

Tensile Strength (MPa)

620–880

750–1000

Yield Strength (0.2% Proof, MPa)

450

550

Elongation (%)

25

25

Hardness (Brinell HB)

290

310

Modulus of Elasticity (GPa)

200

200

Thermal Conductivity (W/m·K)

19.0

14.0

Electrical Resistivity (µΩ·m)

0.85

0.82

Mechanical Properties Of Duplex and Super Duplex Steel Flanges

Flange Name	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
Duplex 2205 Flanges	620–880	450	25
Super Duplex 2507 Flanges	750–1000	550	25

Types Of Duplex and Super Duplex Steel Flanges We Offer

Duplex and Super Duplex Steel Weld Neck Flanges

Duplex and Super Duplex Steel Slip On Flanges

Duplex and Super Duplex Steel Blind Flanges

Duplex and Super Duplex Steel Socket Weld Flanges

Duplex and Super Duplex Steel Threaded Flanges

Duplex and Super Duplex Steel Lap Joint Flanges

Duplex and Super Duplex Steel Spectacle Blind Flanges

Duplex and Super Duplex Steel Reducing Flanges

Duplex and Super Duplex Steel Orifice Flanges

Duplex and Super Duplex Steel Ring Type Joint Flanges

Duplex and Super Duplex Steel Square Flanges

Materials We Offer

Carbon Steel Flanges

Hastelloy Flanges

Hastelloy C22 / C276 Flanges

Monel Flanges

Monel 400/K500 Flanges

Inconel and Incoloy Flanges

Inconel 600/601/625/718 Flanges

Incoloy 800/800H/800HT/825 Flanges

Alloy 20 Flanges

FAQ

Your complete guide to understanding Steelvron’s products, materials, certifications, and industrial applications worldwide

Why choose Steelvron as a Duplex Steel Flanges Supplier?

Steelvron provides high-quality Duplex & Super Duplex Flanges, with superior corrosion resistance, high strength, and customized solutions for critical industrial applications.

Which flanges are suitable for chloride-rich environments?

Duplex 2205 Flanges and Super Duplex 2507 Flanges are highly resistant to chloride-induced stress corrosion and pitting.

What standards do your Duplex & Super Duplex Flanges comply with?

ASTM, ASME, ANSI, DIN, EN, and JIS standards.

Can you provide flanges for high-pressure systems?

Yes, our Duplex & Super Duplex Flanges are engineered for extreme pressure and high-temperature applications.

Do you offer customized flange sizes?

Absolutely. We manufacture flanges per client specifications, drawings, and international standards.

What is the maximum size of Duplex & Super Duplex Flanges you supply?

Steelvron supplies Duplex & Super Duplex Flanges up to 48” (1200 NB).

Are these flanges suitable for marine and chemical industries?

Yes, both Duplex 2205 and Super Duplex 2507 Flanges are ideal for seawater, chemical processing, and harsh industrial environments.

Why Choose Us?

Global Expertise

Trusted manufacturer, supplier, and exporter of Duplex and Super Duplex Steel Flanges worldwide.

Complete Range

Comprehensive portfolio covering all Duplex and Super Duplex Steel Flanges materials and types, ensuring broad compatibility.

Certified Quality

ISO-certified facilities ensure strict manufacturing and testing, delivering precision products consistently.

International Standards

Products meet ASME, ANSI, DIN, EN, BS, and JIS norms, ensuring acceptance.

Custom Solutions

Supplying standard and tailor-made Duplex and Super Duplex Steel Flanges, crafted to match exact specifications.

Worldwide Reach

Exporting to 50+ countries with a proven record of client satisfaction.

Property	Duplex 2205 Flanges	Super Duplex 2507 Flanges
Density (g/cm³)	7.8	7.8
Melting Point (°C)	1350–1450	1350–1450
Tensile Strength (MPa)	620–880	750–1000
Yield Strength (0.2% Proof, MPa)	450	550
Elongation (%)	25	25
Hardness (Brinell HB)	290	310
Modulus of Elasticity (GPa)	200	200
Thermal Conductivity (W/m·K)	19.0	14.0
Electrical Resistivity (µΩ·m)	0.85	0.82

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