OneWest Manufacturing Partners

Our Products

Vertically integrated. Forged to spec.

From raw forging through heat treatment and finished machining, the OneWest family delivers a complete range of forged flanges, fittings, wellhead and power products, custom forgings, and engineered components — all under one roof.

Federal Flange

Federal Flange

A leading manufacturer of flanges since 1975.

Federal Flange supplies a comprehensive range of forged flanges and fittings for the oil & gas, petrochemical, and pipeline industries — backed by one of the largest stocking inventories in North America.

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ANSI Flanges

  • Weld neck
  • Slip-on
  • Blind
  • Socket weld
  • Threaded
  • Lap joint

API Flanges

  • API 6A flanges in stock
  • Type 6B & 6BX
  • Studded outlets
  • Adapter flanges
Forged Components (FCI)

Forged Components (FCI)

Precision forgings & ASME pressure vessel connections.

FCI manufactures high-integrity forgings and pressure vessel connections in-house — serving energy, power generation, subsea, and pressure vessel fabricators worldwide.

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ASME Pressure Vessel Connections

  • Long weld necks
  • Flat barrel nozzles
  • Contoured barrel nozzles
  • Q-Lip nozzles
  • Stub end nozzles
  • Studding outlets
  • Large diameter flanges

Custom Forgings

  • Rings
  • Discs
  • Blocks
  • Cylinders
  • Tubesheets
  • Valve bodies
  • Miscellaneous shapes

Wellhead Products

  • Casing heads
  • Tubing heads
  • Goat heads
  • Miscellaneous wellhead components

Subsea Products

  • Subsea forgings
  • Topside components
  • Raw & finished forgings for offshore
Westbrook MFG

Westbrook MFG

The industry standard for pipe nipples since 1966.

Westbrook is the trusted source for pipe nipples, forged steel fittings, and oilfield hookups — keeping the upstream and downstream connections that critical operations depend on.

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Nipples

  • Industry-standard pipe nipples
  • Carbon, stainless & alloy
  • All schedules & lengths

Oilfield Products

  • Oilfield hookups
  • Production tree components
  • When-you-need-them inventory

API Flanges

  • Full line of API 6A flanges in stock
  • Type 6B & 6BX
Engineered Products Group

Engineered Products Group

High-integrity forged components in a full spectrum of alloys.

EPG produces precision open-die forgings, heat-treated components, and machined parts — from standard grades to specialty exotic alloys, all manufactured in the USA.

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Custom Forgings

5 to 50,000 lb capacity with near-net shapes in a wide array of sizes and configurations.

  • Rings
  • Cylinders
  • Blocks
  • Discs
  • Round bars
  • Step shafts
  • Valve bodies

Heat Treated Components

Among the largest in-house heat-treating facilities in Texas — AMS 2759 and AMS 6875 compliant.

  • Normalizing
  • Quenching
  • Tempering
  • Annealing

Machined Parts

Turnkey machining with manual and automated CNC technology — rough through finished.

  • CNC turning & milling
  • Rough machining
  • Finished machining
  • Precision tolerances

Need something custom?

Our four operating companies bring decades of forging and machining expertise to every project. Tell us what you need — we'll engineer the solution.

Talk to our team