About Flanges.IO
Your trusted partner for industrial pipe flanges since 1986.
Who We Are
Flanges.IO has served the petrochemical, process, and waterworks industries for over three decades. We specialize in providing high-quality pipe flanges for critical applications across the United States and internationally.
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, and 20K. High Yield and Low Temp available.
See What We Do
Take a closer look at our operations and the quality standards behind every flange we deliver.
Products & Materials
Flange Products We Carry
- ANSI/ASME B16.5 Forged Steel Flanges
- MSS-SP-44 / ANSI B16.47 Series A & B
- API 6A Flanges
- API-605 Flanges
- Orifice Unions (B16.36)
- Boiler Code Flanges
- Class 125 Lightweight Cast Iron
- Plate Flanges
- Long Weld Neck Flanges
- Studding Outlets
- Spectacle Blinds
- DIN Standard Flanges
- JIS Standard Flanges
- Ring Flanges
Materials Available
- Carbon Steel (A105, A350 LF2, A694 F52/F60/F65/F70)
- Chrome Alloys (F5, F9, F11, F22, F91)
- Stainless Steel (304/L, 316/L, 321, 347, 904L)
- Aluminum (6061, 5083)
- Hastelloy (C-276, C-22, B-2)
- Inconel (600, 625, 718)
- Incoloy (800, 825)
- Monel (400, K-500)
- Copper & Copper Nickel (70/30, 90/10)
- Duplex & Super Duplex (2205, 2507)
- Titanium (Grade 2, Grade 5)
Import Flanges vs. Domestic Flanges
Import Flanges
We source import flanges from qualified international mills that meet or exceed ASTM, ASME, and API material requirements. Import flanges offer a cost-effective solution for standard applications while maintaining full compliance with industry standards. Each shipment includes mill test reports (MTRs) verifying chemical composition and mechanical properties.
Domestic Flanges
For projects requiring Buy American, ARRA compliance, or where domestic origin is specified, we carry a full line of USA-manufactured flanges. Domestic flanges are forged and machined in American facilities with full traceability. We stock domestic product in the most common sizes and classes, with quick-turn capability on specialty items.
Not sure which option is right for your project? Our team can help you evaluate the best fit based on your specifications, timeline, and budget. Contact us to discuss your requirements.
Our Journey
Founded
Established to serve the petrochemical and oilfield industries with quality pipe flanges and fittings from our base in the Houston, Texas area.
Digital Pioneers
One of the first flange suppliers to launch a website and online catalog, making it easier for customers worldwide to find the right products.
Global Reach
Shipped flanges to every continent in the world, serving international petrochemical, energy, and waterworks projects of all scales.
Industry Leaders
Providing the widest range of ANSI, API, and AWWA flanges with fast delivery and competitive pricing. Sizes from 1/2" to 203", pressure classes from 75 to 20K.
Why Choose Flanges.IO
Extensive Inventory
Over 50 material grades, all major flange styles, and sizes from 1/2" to 203" in stock and ready to ship.
Fast Delivery
We understand that downtime costs money. Our logistics network ensures your flanges arrive when you need them.
Expert Support
Our team brings decades of industry knowledge to help you select the right flanges for your application.
