Companion Flanges
Butt Weld
Companion Flanges
Companion flanges, also known as threaded flanges, are designed for easy connection to threaded pipe systems without the need for welding. These flanges screw directly onto NPT threaded pipe and are bolted to a mating flange using a gasket to create a secure, leak-resistant seal.
They are widely used in low to moderate pressure applications such as water distribution, fire protection systems, compressed air lines, and general industrial piping. Companion flanges offer fast installation, easy removal, and simplified maintenance.
Manufactured in accordance with industry standards including ASME B16.5 and ASTM International material specifications, our companion flanges ensure dimensional accuracy, pressure integrity, and long service life.
Key Features
Threaded (NPT) connection – no welding required
Available in Class 150 and Class 300 pressure ratings
Flat Face (FF) and Raised Face (RF) options
Precision-machined bolt holes for accurate alignment
Durable materials for corrosion resistance
Easy installation and maintenance
Material Used in Manufacturing
Steel
Carbon Steel
Alloy Steel
Duplex & Super Duplex Stainless Steel
Nickel Based Alloys
Applications
Companion flanges are ideal for:
Fire sprinkler systems
Mechanical rooms
Pump and valve connections
Compressed air systems
Industrial piping networks
Standards and Specification
| Parameter | Specification |
|---|---|
| Connection Type | Female NPT Thread |
| Size Range | ½” to 12” (larger sizes available upon request) |
| Pressure Ratings | Class 150 / Class 300 |
| Face Type | Flat Face (FF) / Raised Face (RF) |
| Material Options | Carbon Steel, Stainless Steel (304/316), Ductile Iron |
| Coating Options | Black, Galvanized, Epoxy Coated |
| Thread Standard | ASME B1.20.1 (NPT) |
| Applications | Water, Oil, Gas, Air, Fire Protection |
Why Choose Flangeman Steel Worldwide Pvt Ltd?
Compact and strong design for tight piping layouts.
High-performance materials for durability and corrosion resistance.
Rigorous quality control including hydrostatic and dimensional testing.
Long service life with minimal maintenance for critical piping systems.
Companion Flange from Flangeman Steel Worldwide Pvt Ltd provide reliable flow distribution, mechanical strength, and compliance with international standards, making them suitable for demanding industrial and process piping systems.
Lets Get in Touch!
Welcome to Flangeman Steel Worldwide Pvt. Ltd. – Shaping Strength with Precision Our journey, firmly grounded in a legacy of excellence, has evolved into a dynamic new phase of growth and innovation. With a renewed vision and global outlook, we continue to redefine standards in steel solutions, building a stronger and more sustainable future.