Stainless Steel
Flanges
Stainless steel flanges for industrial piping connections, available in common configurations including weld neck, slip-on, blind, socket weld and threaded types. Supply can be arranged according to applicable standards, material grades and project requirements.
Common Stainless Steel Flange Types
Flange selection depends on piping connection method, pressure class, facing requirement and project specification.
Weld Neck Flange
Designed for butt-weld connection to piping and commonly used where a strong and continuous welded connection is required.
Slip-On Flange
Installed by sliding over the pipe and welding in place, offering a practical connection option for many piping systems.
Blind Flange
Used to close the end of a piping system, valve opening or pressure vessel connection.
Socket Weld Flange
Uses a socket connection for the pipe and is typically selected for applicable smaller-size piping systems.
Threaded Flange
Provides a threaded connection where welding is not required or suitable for the specified installation.
Custom / Project Flanges
Other flange configurations and customized requirements can be evaluated according to drawings or project specifications.
Flange Specifications & Standards
Stainless steel flanges can be supplied according to applicable dimensional standards, facing requirements, material specifications and project requirements.
Common weld neck, slip-on, blind, socket weld and threaded configurations.
Applicable standard depends on flange type, nominal size and project requirement.
Raised face, flat face and ring-type joint options can be evaluated according to specification.
Pressure class should be confirmed according to the applicable flange standard and RFQ.
Additional stainless steel and special alloy grades can be evaluated according to the RFQ.
Other applicable flange standards can be reviewed according to project requirements.
Common Flange Facing Configurations
Flange facing should be selected according to the gasket, piping class and applicable project specification.
Raised Face — RF
Raised face flanges use a raised sealing surface around the bore and are widely used in industrial piping systems.
Flat Face — FF
Flat face flanges provide a sealing surface across the full flange face for applicable piping connections.
Ring-Type Joint — RTJ
RTJ flanges use a machined groove for a metallic ring gasket where the specified piping design requires this sealing arrangement.
Available Materials
Stainless steel flanges can be supplied in common austenitic grades as well as higher-alloy materials for demanding piping environments.
- 304 / 304L Stainless Steel
- 316 / 316L Stainless Steel
- 321 Stainless Steel
- Duplex & Super Duplex Stainless Steel
- Selected Nickel Alloys and Special Materials
Documentation & Inspection
Inspection and documentation requirements can be arranged according to the purchase specification and project requirements.
- EN 10204 3.1 Material Certificate
- Positive Material Identification (PMI)
- Dimensional & Visual Inspection
- NDT Where Required
- Third-Party Inspection Support
Industrial Piping Connections
Stainless steel flanges are widely used to create bolted connections between piping sections, valves and process equipment.
Stainless Steel Flange FAQs
What types of stainless steel flanges can you supply?
Common flange types include weld neck, slip-on, blind, socket weld and threaded flanges. Other configurations can be evaluated according to project requirements.
Can you supply ASME B16.5 stainless steel flanges?
Yes. Stainless steel flanges can be supplied according to ASME B16.5 where applicable. Requirements under ASME B16.47 and other standards can also be evaluated according to the RFQ.
Are RF, FF and RTJ flange facings available?
Raised face, flat face and ring-type joint configurations can be supplied where applicable, according to the selected flange standard and project specification.
Can you supply 304L and 316L stainless steel flanges?
Yes. 304/304L and 316/316L are commonly supported. Duplex, super duplex and selected special alloys can also be evaluated according to the RFQ.
Can EN 10204 3.1 material certificates be provided?
EN 10204 3.1 material certificates can be provided where required. PMI, dimensional inspection, visual inspection, NDT and third-party inspection can also be arranged according to the purchase specification.
What information should I provide for a flange RFQ?
Please provide flange type, standard, material grade, nominal size, pressure class, facing, quantity and delivery destination. Drawings or project specifications can also be provided where relevant.
Need Stainless Steel Flanges?
Send us the flange type, standard, material grade, nominal size, pressure class, facing, quantity and destination. We will review the specification and provide suitable supply options.