Duplex Steel Flanges

Duplex 2205 (UNS S31803/S32205) available
Super Duplex 2507 (UNS S32750) available
Twice the strength of standard stainless steel
Excellent SCC & pitting resistance
Perfect for offshore oil & gas platforms

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Product Overview

MicroTech manufactures premium Duplex Steel Flanges that combine the benefits of austenitic and ferritic stainless steels. These flanges offer superior strength, excellent corrosion resistance, and cost-effectiveness for demanding applications.

Duplex Steel Flanges are ideal for applications requiring high strength and resistance to stress corrosion cracking, making them perfect for offshore oil & gas, chemical processing, and marine applications.

Available in grades 2205, 2507, S31803, and S32750, our duplex steel flanges are manufactured to ASME B16.5, ASME B16.47, and other international standards.

Specifications

Material Grades

ASTM A182 F51 (2205)
ASTM A182 F53 (2507)
ASTM A182 F55 (S32750)
UNS S31803
UNS S32205
UNS S32750

Standards

ASME B16.5
ASME B16.47 Series A & B
DIN 2527, 2566
EN 1092-1
BS 4504
ANSI B16.5

Types Available

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

Size Range

Size: 1/2" to 48"
Pressure Class: 150# to 2500#
Thickness: SCH 10 to SCH XXS

Key Features

Twice the strength of austenitic stainless steel

Excellent resistance to stress corrosion cracking

Superior resistance to chloride pitting and crevice corrosion

Good weldability and fabricability

Cost-effective alternative to high nickel alloys

100% PMI tested for material verification

Applications

Offshore Oil & Gas

Subsea systems and offshore platforms

Chemical Processing

Corrosive chemical handling

Marine Applications

Seawater systems and marine equipment

Petrochemical

Refineries and processing plants

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