Your Source for Industrial Flanges - Nationwide Delivery
Flanges.AI is your trusted source for pipe flanges across the United States and internationally. We deliver stock and custom flanges in ANSI, API & AWWA standards - with over 50 material grades and pressure classes from 150 to 20K. Request a quote or explore our product catalog today.
Most Popular Flange Styles
A Flange is a key component in piping systems and pressure vessels, providing a secure way to connect pipes, valves, or equipment. A Flange, by defination, secures, stregnthens, or attaches. For us, Flanges create strong, leak-proof joints.
About
About Us
Shipped to every continent in the world 2005
Flanges.AI has served the petrochemical, process, and waterworks industries for over 3 decades.
We provide ANSI, API, and AWWA pipe flanges in carbon steel, stainless steel, alloys, and chrome steel. Styles we offer include weld neck, slip on, blind, threaded, socket weld, lap joint, orifice flanges, ring, and custom flanges in sizes from 1/2" to 203".
Pressure classes we offer include 75, 125, 150, 175, 250, 300, 350, 400, 600, 900, 1500, 2500, 5K, 10K, 15K, 20K. High Yield, Low Temp.
Industries We Serve
Contact UsAs a trusted ANSI flange supplier for petrochemical facilities, we provide Flanges that resist aggressive chemicals and process conditions. Whether for high-temperature reactors, pressure vessels, or chemical transport systems, our products ensure safety and performance in critical applications.
Oilfield flange supplier providing API-rated flanges for upstream, midstream, and downstream operations across Texas and the Gulf Coast.
AWWA flange supplier for municipal water treatment and distribution systems
Resources
Our Resources and Drawings
Frequently Asked Questions
A flange is essential for connecting pipes, valves, pumps, and other equipment in piping systems. It ensures a secure, leak-proof joint and facilitates assembly, disassembly, and maintenance of the system.
A flanged fitting is a connection with an extended rim (flange) designed for bolting two components together. This ensures a robust, sealed, and easy-to-maintain connection in high-pressure and high-temperature environments.
The most commonly used flange types are: Weld Neck Flanges - Ideal for high-pressure applications with a tapered hub for structural integrity. Slip-On Flanges - Easy to install and cost-effective for low-pressure systems. Blind Flanges - Used to seal the end of pipelines or pressure vessels.
The weld neck flange, including its variation, the long weld neck, is the most widely used due to its strength, durability, and suitability for high-pressure and high-temperature applications.
