Nickel alloy fittings

High-quality nickel alloy fittings for oil & gas and petrochemical piping systems. Built for corrosive media, offshore seawater exposure and demanding service conditions.

Available from single items to complete packages with matching pipes, fittings and flanges: supplied from stock or sourced to meet your lead time.

About Maass Special Alloys

We specialize in nickel alloy products for oil, gas and petrochemical projects. Fast response, clear communication and a delivery plan that matches your lead time.

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

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Why choose Maass as your Nickel Alloy Fittings supplier?

Designed for critical oil & gas piping

Corrosion resistance

Engineered for environments where standard materials fall short.

Leak-tight connections

Correct fit-up and specification control for reliable, long-life joints

High pressure options

Forged socket-weld and threaded fittings available in higher pressure classes.

Acid performance

Strong choice for corrosive process streams and chemical duties.

Chloride environments

Options for chloride environments where SCC risk is a concern.

Seamless buttweld fittings from stock

We have seamless buttweld fittings from stock in common project grades. Typical items include elbows, tees, reducers and caps. Welded buttweld fittings are available on request.

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

Types of buttweld fittings from our stock program

Below is a quick overview of common buttweld items we supply in the grades above (availability is size/schedule dependent).

Elbow 90°
ASTM/ASME (S)B 423 UNS N08825
½” – 8”
Sch10S – SchXXS
Elbow 45°
ASTM/ASME (S)B 444 UNS N06625
½” – 6”
Sch10S – SchXXS
Equal Tee
ASTM/ASME (S)B 729 UNS N08020
½” – 8”
Sch10S – Sch160
Reducing Tee
ASTM/ASME (S)B 622 UNS N10276
½” –6”
Sch10S – Sch80S
Concentric Reducer
ASTM/ASME (S)B 622 UNS N06022
½” – 3”
Sch10S – Sch80S
Eccentric Reducer
ASTM/ASME (S)B 165 UNS N04400
½” – 6”
Sch10S – Sch80S

Forged fittings on request (socket-weld & threaded)

We supply a full range of forged nickel alloy fittings, including socket-weld and threaded types, in common pressure classes for instrument and high-pressure piping applications.

  • Pressure classes: 3000 / 6000 / 9000 lbs
  • End connections: Socket-weld (SW) / Threaded (NPT)

Share your spec and we’ll confirm the most suitable supply route and documentation set.

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 Nickel Alloy fitting supply for your industry

For nickel alloy fittings, documentation is an important part of the requirement. We supply fittings with standard certification and can add inspection/testing on request.

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 of fittings: 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 for your project.

  • List item
  • List item
  • List item

Request a quote for Nickel Alloy Fittings

Please fill in the contactform or send your inquiry. We’ll confirm availability 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