Flanges

DNOW has a large stock inventory of flanges that allow two segments of pipe to be joined together or for valves to be connected to piping systems. Our flanges are from manufacturers that are approved through our ISO 9001 certified quality program and may be cast, forged or cut from carbon steel, stainless steel, specialty alloy and fiberglass to cover almost any requirement.

Carbon Steel Flanges

We offer a full line of CS flanges from some of the best global manufacturers.

  • Standard Flanges
  • High Yield Flanges
  • API Flanges
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Flanges CS Weldneck

Specifications

Standards / Material Grades ASTM A/SA-106, A/SA-105
Sizes ¼ in. NPS – 24 in. NPS (larger sizes by request)
Types Slip On, Blind, Threaded, Weld Neck, Socket Weld, Lap Joint

A Selection of Supplier and Manufacturer Partnerships

AFGlobal
Bebitz India
Boltex
Coffer Flange
Flanges, Inc.
Flanschenwerk Bebitz GmbH
Forged Vessel Connections
Friedrich Geldbach
Galperti Group
Gulf Manufacturing
ULMA Forja
Weldbend

Stainless & Alloy Steel Flanges

Our forged austenitic stainless steel flanges are intended for low- or high-temperature general corrosive service.

  • Raised face and ring joint connections
  • Approved manufacturers
  • Extensive inventory
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Flanges SS Socketweld

Specifications

Standards / Material Grades ASTM A182/SA182, ASME B16.5, B16.47 Series A & B, B16.48, F304/L, F316/L, F51/60 Duplex
Sizes ½ in. NPS – 12 in. NPS
Pressure Ratings ANSI Class 150, 300, 600, 900, 1500
Types Slip On, Blind, Threaded, Weld Neck, Socket Weld, Lap Joint

A Selection of Supplier and Manufacturer Partnerships

Chandan Steel
Felix Technology
Flanschenwerk Bebitz GmbH
Maass Flange
Metalfar
ULMA Forja

Fiberglass & Composite Flanges

Our fiberglass flanges are ideal for highly corrosive gas and water applications:

  • Flow/Emulsion lines
  • Injection/Disposal lines
  • Group lines
  • Gas gathering & transport lines
  • De-watering lines
  • Water & frac water transfer lines
  • Tank battery & facility piping
  • Chemical process piping
  • CO₂ & H₂S service
  • Industrial wastewater
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Flanges Fiberglass

Specifications

Standards / Material Grades ANSI B16.5, aromatic amine cured epoxy resin, cycloalphatic cured epoxy resin
Compression molded, contact molded, centrifugal cast, fabricated or filament wound
Sizes Bonded: 2 in. – 42 in. (50 mm – 1066 mm)
Threaded: 2 in. – 14 in. (50 mm – 355 mm)
Pressure Rating ANSI Class 150, 300, 600, 900, 1500, depending on product
Temperature Rating Up to 225° F (106° C), depending on product
Types Stub flanges, blind flanges, orifice flanges, flange rings, depending on product

Downloads

TS&M Fiberglass Piping Systems Flyer - Canadafile download
TS&M Fiberglass Piping Systems Flyer - U.S.file download

A Selection of Supplier and Manufacturer Partnerships

NOV Fiber Glass Systems (Bondstrand™)
NOV Fiber Glass Systems (Centron®)
NOV Fiber Glass Systems (Red Thread™ HP)
NOV Fiber Glass Systems (STAR™)

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