Flange

Flange Basics: High-Quality Pipe Flanges for Industrial Applications
Reliable Solutions for Your Piping System

Flanges are essential components for connecting piping systems, ensuring secure and leak-proof joints with valves, equipment, and other components. As the second most commonly used joining method after welding, pipe flanges provide flexibility, ease of maintenance, and efficient system modifications.

Why Choose Our Pipe Flanges?

Our high-quality stainless steel flanges and other specialized flange materials, including Monel, Inconel, and Chrome Moly, are designed to meet diverse industrial requirements. Whether for high-pressure, high-temperature applications or standard industrial piping systems, we offer reliable and durable solutions.

A standard flanged connection consists of three key components:

• Pipe Flanges
• Gasket
• Bolting

By selecting the right flange types, materials, and pressure ratings, you ensure long-lasting performance and optimal system efficiency.

Our Flange Types and Their Applications

We offer a complete range of flange types, each suited for specific operational needs:

• Threaded Flanges: Also known as screwed flanges, these allow for quick installation without welding by simply matching the threaded connection to the pipe.
• Socket-Weld Flanges (SW Flange): Best for low-pressure and low-temperature conditions, featuring a secure fillet weld connection.
• Slip-on Flanges (SO Flange): A widely used option for systems with higher flow rates, requiring fillet welds on both sides.
• Lap Joint Flanges (LJ Flange): These use a two-piece design, ideal for systems requiring frequent dismantling and limited-space installations.
• Weld Neck Flanges (WN Flange): Known for high strength and durability, these flanges are ideal for high-pressure, high-temperature applications.
• Blind Flange (BL Flange): Used for system isolation or termination, providing a strong, removable seal.
• Specialty Flanges: Custom solutions, including nipoflanges, weldoflanges, expanding flanges, orifice flanges, long weld neck flanges, and reducing flanges, designed for unique industry needs.

Flange Facing Types for a Secure Seal

Selecting the correct flange facing type is crucial for system efficiency and sealing performance. We provide multiple face types to match your application needs:

• Flat Face (FF): Ideal for full-face gaskets, offering an even sealing surface.
• Raised Face (RF): Features a small raised section to enhance gasket contact and sealing.
• Ring Joint Face (RTJ): Designed for high-pressure, high-temperature environments, using a metal gasket to maintain an optimal seal.
• Tongue and Groove (T&G): Self-aligning design that improves gasket placement and adhesion.
• Male & Female (M&F): Provides precise gasket retention, making it ideal for specialized sealing applications.

Additionally, smooth or serrated finishes are available based on gasket compatibility and sealing performance requirements.

Flange Dimensions & Standards

Choosing the right flange dimensions is vital for system compatibility and installation efficiency. Our flanges conform to ASME B16.5 and ASME B16.47 standards, ensuring global compliance and reliable performance.

Key dimensional factors include:

• Outside Diameter (OD): The total width of the flange face.
• Thickness: The outer rim thickness, affecting strength and durability.
• Bolt Circle Diameter (BCD): The distance between bolt holes, measured from center to center.
• Nominal Bore Size: The internal diameter, matching the connected pipe.
• Pipe Size Compatibility: Ensuring the flange fits the system requirements.

Flange Classification & Pressure Ratings

All flanges are classified by pressure ratings, ensuring suitability for different operational conditions. These classifications include:

• 150#
• 300#
• 600#
• 900#
• 1500#
• 2500#

As a rule, higher temperatures decrease pressure tolerances, making proper classification essential for safe operation.

Flange Markings for Easy Identification

Each flange includes standardized markings for traceability and compliance, including:

• Manufacturer Code
• ASTM Material Code
• Material Grade
• Pressure-Temperature Class
• Size & Schedule
• Heat Number
• Special Designations (if applicable)

Find the Right Flange for Your Needs

With a vast selection of stainless steel flanges and specialty flanges, we provide high-quality, durable solutions for a wide range of industrial piping applications.

Need expert guidance? Contact our Technical Sales Team today to find the best pipe flanges, gaskets, and bolting solutions for your next project!