Nickel Alloy Flanges

High-quality nickel alloy flanges for the oil & gas industry and chemical processing. Built for corrosive media, offshore exposure and demanding pressure classes.

From single pipe flanges to complete packages with pipes, fittings and flanges: delivered from stock or sourced to meet your lead time.

About Maass Special Alloys

We are part of the GMI Global Group. That means stock supply plus flange manufacturing access. What you can expect:

Please send your inquiry and we’ll confirm availability and lead time

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Your Nickel Alloy Flange Manufacturer & Supplier

Designed for critical oil & gas piping

Corrosion resistance

Built for demanding environments where standard materials fail.

Pressure class coverage

Common pressure classes available from stock and on request.

Material grade flexibility

Special Nickel and other grades available (spec-driven).

Project supply

Flanges supplied as standalone or as part of a package with pipes and fittings.

Certified supply

Project-ready documentation with optional inspection routes.

Nickel alloy flanges available from stock

Current program includes the flange types and ranges below (availability is size/class dependent).

Alloy 825
ASTM/ASME (S)B 423 UNS N08825
½” – 8”
Sch10S – SchXXS
Alloy 625
ASTM/ASME (S)B 444 UNS N06625
½” – 6”
Sch10S – SchXXS
Alloy 20
ASTM/ASME (S)B 729 UNS N08020
½” – 8”
Sch10S – Sch160
Alloy C276
ASTM/ASME (S)B 622 UNS N10276
½” –6”
Sch10S – Sch80S
Alloy C22
ASTM/ASME (S)B 622 UNS N06022
½” – 3”
Sch10S – Sch80S
Alloy 400
ASTM/ASME (S)B 165 UNS N04400
½” – 6”
Sch10S – Sch80S

Maass Global Group

Production Sites
Stock / Offices

Maass Global Group is a network of different flange production locations and stock / sales offices, able to offer a complete line of production in Stainless, Duplex, Low Alloy and Special Nickels in both small and large diameter sizes combined with a full range of pressure classes.

Certified flange supply

Nickel alloy flanges are typically specified where failure risk is high and documentation is required. We deliver with standard certification and can add inspection/testing on request. All flanges are produced by Wilhelm Maass GmbH.

We offer as standard:

  • EN 10204 / 3.1 certified
  • Dual certified in accordance with ASTM / AMSE
  • Material in compliance to International specification
  • Random Lengths or Cut-to-length
  • Stock delivery times
  • Upon request:
Additional testing
Bevelling
Third Party inspection

Service conditions: which grade for which application?

Below is a quick guide to typical grade choices by service condition. Share your project spec and we’ll confirm the best-fit grade and supply route.

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Request a quote for Nickel Alloy Flanges

Please fill in the contactform or send your inquiry. We’ll confirmavailability from stock or the best supply route for your lead time.

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Mail us

sales@maass-special-alloys.com

Call us

+31 (0)30 8200 370