Industrial Flanges: High-Quality Pipe Connection Solutions
Flanges are essential components in piping systems, providing secure connections between pipes, valves, pumps and other equipment. Our flanges meet rigorous industry standards and are available in various materials and specifications to suit diverse applications.
Flange Product Specifications
Material Options:
- Carbon Steel (ASTM A105, A350 LF2)
- Stainless Steel (304, 316, 316L)
- Alloy Steel (ASTM A182 F11, F22)
- Duplex Steel (UNS S31803, S32205)
- Nickel Alloys (Inconel, Monel, Hastelloy)
Pressure Ratings:
| Flange Type | Pressure Class | Temperature Range |
|---|---|---|
| Weld Neck | 150# to 2500# | -20°F to 1000°F |
| Slip-On | 150# to 900# | -20°F to 800°F |
| Socket Weld | 150# to 600# | -20°F to 850°F |
| Blind | 150# to 2500# | -20°F to 1000°F |
Flange Types and Applications
Weld Neck Flanges
Ideal for high-pressure applications with butt-welded connections. Features a tapered hub for smooth stress distribution.
Slip-On Flanges
Economical choice for low-pressure systems with fillet welded connections inside and outside the flange.
Socket Weld Flanges
Designed for small-diameter, high-pressure piping with internal welds providing smooth bore and good flow characteristics.
Flange Dimensions and Standards
| Size Range | OD (inches) | Bolt Circle (inches) | Bolt Holes | Standards |
|---|---|---|---|---|
| 1/2" - 24" | 3.50 - 26.50 | 2.38 - 22.50 | 4 - 24 | ASME B16.5, B16.47 |
Flange FAQ Section
Flange Selection FAQ
Q: How do I choose the right flange for my piping system?
A: Selecting the proper flange requires considering several factors including: pressure rating (class), temperature requirements, material compatibility with the conveyed medium, connection type, and dimensional requirements. Always consult ASME/ANSI standards and consider corrosion factors when choosing flange materials.
Q: What's the difference between raised face and flat face flanges?
A: Raised face flanges (RF) have a small raised section around the bore that contacts the gasket, while flat face flanges (FF) have no raised section. RF flanges are standard for most applications, while FF flanges are typically used when mating with flat face cast iron equipment. The raised face allows for higher pressure capability with proper gasket compression.
Flange Installation FAQ
Q: What's the proper bolt tightening sequence for flange installation?
A: The recommended tightening sequence follows a star pattern to ensure even gasket compression. For a 4-bolt flange: tighten bolt 1 to 30% torque, then opposite bolt 3 to 30%, then bolt 2 to 30%, and finally bolt 4 to 30%. Repeat this pattern at 60% and 100% torque values. For flanges with more bolts, follow a similar crisscross pattern working outward from the center bolts.
Flange Maintenance and Inspection
Regular flange inspections should include checks for: visible corrosion, bolt tension, gasket condition, and leakage. Critical service flanges may require ultrasonic testing or other NDT methods. Always follow proper safety procedures when inspecting pressurized systems.
Flange Storage Best Practices
- Store in dry, covered areas to prevent corrosion
- Keep flange faces protected with wooden or plastic covers
- Organize by size and material type for easy identification
- Clean flange faces before installation to remove any debris
Our flanges are manufactured to exacting standards to ensure reliable performance in demanding industrial environments. Contact our engineering team for assistance with your specific flange requirements.