Flanges
High-Quality Solutions for Every Application
DNOW offers an extensive inventory of flanges designed to join pipe segments or connect valves to piping systems. Our selection includes carbon steel flanges, stainless steel and specialty alloy flanges, and fiberglass flanges to meet a variety of industrial requirements. All products are sourced from manufacturers approved through our ISO 9001-certified quality program, ensuring premium quality and reliability.
Carbon Steel Flanges
Durable and Reliable
Our carbon steel flanges are crafted to withstand rigorous industrial applications, offering durability and performance.
Key Types of Carbon Steel Flanges:
- Standard Flanges
- High Yield Carbon Steel Flanges
- API Flanges
- Carbon Steel Weld Neck
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
Stainless Steel and Specialty Alloy Flanges
Our stainless steel flanges are ideal for corrosive environments and extreme temperatures, while our specialty alloy options provide superior resistance in demanding conditions.
Key Types of Flanges:
- Threaded Flanges
- Lap Joint Flanges
- Welding Neck
- Blind Flanges
- Slip-On Flanges
- Socket Weld Flanges
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
Fiberglass Flanges
Corrosion-Resistant Solutions
DNOW’s fiberglass flanges are engineered for highly corrosive gas and water applications, including CO₂ and H₂S service, tank battery piping, and industrial wastewater systems.
Key Applications:
- Flow/Emulsion Lines
- Injection/Disposal 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
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 - Canada |  |
|---|---|
| TS&M Fiberglass Piping Systems Flyer - U.S. | |
A Selection of Supplier and Manufacturer Partnerships
Why Choose DNOW Flanges?
DNOW combines a wide product range with top-tier supplier partnerships, ISO-certified quality assurance, and industry expertise to deliver flanges for any project, including carbon steel, API flanges, stainless steel, and fiberglass solutions.
