Flanges
Flat Face (FF) Flange
Flat face flanges for full-face gaskets and mating with cast iron equipment, 1/2″ to 48″, with BS 10 mild steel tables.

Specification
At a glance
- Dimensional standard
- ASME B16.5 · ASME B16.47 · ASME B16.36 · ASME B16.48 · BS 4504 · EN 1092 · DIN · JIS
- Size range
- 1/2″ – 64″ (15 – 1600 NB)
- Pressure classes
- Class 150 · Class 300 · Class 600 · Class 900 · Class 1500 · Class 2500
- Types & ends
- Slip-on · Weld neck · Blind · Socket weld · Lap joint · Threaded · Reducing · Spectacle
- Facings
- Flat face (FF)
- Grade
- IS 2062 Gr. A
- Also offered in
- Stainless steel 304/304L, 316/316L, 904L
- Alloy 20, Nickel 200, Monel, Inconel, Hastelloy C22
- Duplex 2205
- Titanium, Copper-nickel, SMO 254, Aluminium, Galvanized, MS
Dimension tables
2 classes · dimensions, weights, Excel
As published by Fortune Fittings Private Limited. Grade and availability are confirmed with each enquiry; confirm the governing standard, size and grade when ordering. Spotted a mistake? Please contact us.
Overview
Product overview
Flat Face Flanges are crucial components in various piping and plumbing systems.
What is a Flat Face Flange?
A Flat Face Flange features a flat surface on the face of the flange, which makes contact with the mating flange face, also flat, to create a seal between the two flanges. These flanges are typically used in applications where there is no need to align or center the pipes or equipment being connected. Flat Face Flanges are ideal for situations where pressure and temperature requirements are moderate.
Types of Flat Face Flanges
At Fortune Fittings Private Limited, we offer a comprehensive range of flat face flanges designed to meet various industrial needs:
- Slip-On Flanges: Easy to install and suitable for low-pressure applications.
- Weld Neck Flanges: Ideal for high-pressure applications, providing added strength with a long tapered hub.
- Blind Flanges: Used to close the end of a piping system, preventing flow.
- Threaded Flanges: Suitable for small-diameter pipes in low-pressure applications, allowing easy connection with threading.
Installation and Gaskets
Flat Face Flanges require the use of a gasket to create a seal between the flanges. The gasket is placed between the flat faces of the flanges and compressed when the bolts are tightened, forming a tight seal. The type of gasket used depends on the specific application and the materials of the flanges.
Ready Inventory and Custom Solutions
We maintain a ready inventory of flat face flanges in various sizes, including 10-inch and 3-inch FF flanges. Additionally, we offer custom solutions to meet specific requirements, ensuring our clients receive the best products and services.
Material Comparison and Applications
We offer flat face flanges in a variety of materials to suit different industrial applications:
These materials ensure durability and performance in corrosive environments, moderate pressures, and temperatures. Flat Face Flanges are commonly used in industries such as petrochemical, oil and gas, and water treatment.
- Stainless Steel: 304/304L, 316/316L, 904L
- Alloy Steel: Alloy 20, Nickel 200, Monel, Inconel, Hastelloy C22
- Duplex Steel: 2205
- Others: Titanium, Copper Nickel, SMO 254, Aluminum, Galvanized, MS Flat Face Flange
Conclusion
With our dedication to quality, precision, and customer satisfaction, we are poised to meet the demanding needs of various industries.
Related
Specified alongside this
Components that commonly appear with it on the same run, and the rest of the flanges range.
Same rangeWeld Neck FlangeWeld neck flanges to ASME B16.5, ASME B16.47 and EN 1092, including long weld neck, with tables for MS, carbon, stainless and Cr-Mo grades.View specifications
Same rangeSlip-On FlangeSlip-on flanges to ASME B16.5 and EN 1092-1, flat or raised face, with dimension tables for mild, carbon and stainless steel.View specifications
Same rangeBlind FlangeBlind flanges to ASME B16.5, ASME B16.47, BS 4504 and EN 1092-1, 1/2″ to 48″, with tables for MS, carbon, stainless and Cr-Mo grades.View specifications
Same rangeSocket Weld FlangeSocket weld flanges to ASME B16.5 and BS 4504 for small-bore, high-pressure lines, in stainless and carbon steel, with Class 150 tables.View specifications
Same rangeThreaded FlangeThreaded flanges to ASME B16.5 with NPT or BSP threads for low-pressure lines where welding is not wanted, with Class 150 tables.View specifications
Same rangeLap Joint FlangeLap joint flanges to ASME B16.5, EN 1092-1 and DIN 2642, used with a stub end, Class 150 to 600, with Class 150 dimension tables.View specifications
Where it is specified
Industries using this component
Sectors that commonly specify the Flat Face Flange, and what else they take from us.
- RefineriesButtweld fittings, flanges and fabricated spools in carbon and alloy steel for crude, product and utility service.View sector
- Petrochemical PlantsDuplex, super duplex and stainless fittings and flanges for corrosive and high-pressure process service.View sector
- Power PlantsAlloy steel buttweld and forged fittings for high-temperature steam, feedwater and condensate circuits.View sector
Enquiries
Need a quotation for the Flat Face Flange?
Send sizes, grades, quantities and the standard the component is specified to, and a sales engineer will come back with availability and pricing. Dimensions and schedules are in the Technical Catalog.
