Stainless Steel Flanges

Our company provides Stainless Steel Flanges in various materials.

We stock hundreds of high-quality stainless steel flanges to meet your needs and piping specifications. We have an extensive inventory of multiple stainless steel flanges. Most of our high quality, flanges are ready to ship upon request.

  • Blind Plate Flanges
  • Weld Neck Flanges
  • Slip-On Flanges
  • Lap Joint Flanges
  • Socket Weld Flanges
  • Threaded Flanges

lewis Liu

sales Manager

Stainless Steel Flanges

Stainless steel flanges provide easy access for cleaning, inspection, and modification. Stainless steel flanges connect with pipe and fittings to form a piping system that delivers air, water, natural gas, oil, and steam in plumbing applications and food and dairy processing.

Flanges are more important parts of pipelines. Some more important pipelines put forward higher requirements on flange materials during construction, such as higher strength, high-temperature resistance, high-pressure resistance, low-temperature resistance, corrosion resistance, wear resistance, etc. Carbon steel flanges cannot fully meet the requirements of special physical and chemical properties, so stainless steel flanges appear.
Stainless steel Flanges are durable, resist corrosion from caustic chemicals, corrosive fluids, oils, and gases, and withstand pressure and high temperatures.

Stainless steel Flanges are made from closed die forged, solution heat treated, pre-machined, sandblasted, CNC machined, turned, milled, drilled, threaded, etc.

Here is a detailed feature and performance table for stainless steel flanges in English, including data ranges for specifications, common standards, types, flange faces and connection methods, and the manufacturing process:

Feature/PerformanceDescription
Corrosion ResistanceStainless steel flanges are renowned for their exceptional corrosion resistance, making them ideal for applications in corrosive environments, such as chemical processing and marine industries.
High StrengthStainless steel flanges exhibit high strength, allowing them to withstand elevated pressures and mechanical stress.
Temperature ResistanceThese flanges maintain their strength and integrity at both high and low temperatures, suitable for extreme temperature applications.
Hygienic PropertiesStainless steel is known for its hygienic properties, making stainless steel flanges suitable for food processing, pharmaceuticals, and cleanroom applications.
Material GradesStainless steel flanges come in various material grades, with some common grades being:
– ASTM A182 F304A commonly used austenitic stainless steel for general-purpose applications.
– ASTM A182 F316An austenitic stainless steel with enhanced corrosion resistance, suitable for aggressive environments.
– ASTM A182 F321Stainless steel with added titanium for improved resistance to intergranular corrosion.
– ASTM A182 F51 (Duplex)Duplex stainless steel with a balanced combination of corrosion resistance and strength, ideal for offshore and marine applications.
Specification SizesStainless steel flange specifications and sizes vary depending on standards (such as ANSI B16.5, ASME B16.47, etc.) and specific application requirements. Here are typical data ranges:
– Flange DiameterFrom 1/2″ (15mm) to 48″ (1200mm)
– Flange ThicknessFrom 1/4″ (6mm) to 6″ (150mm)
– Number and Spacing of Bolt HolesVaries with specifications and pressure ratings, typically 4, 8, 12, or more, with different spacing.
Common StandardsStainless steel flanges often adhere to the following standards:
– ANSI B16.5A flange standard established by the American National Standards Institute, widely used in various engineering projects.
– ASME B16.47A flange standard developed by the American Society of Mechanical Engineers for large and high-pressure flanges.
TypesStainless steel flanges come in various types, including:
– Weld Neck FlangeUsed in high-pressure applications, featuring a neck that is welded to the pipe for added strength and stress distribution.
– Slip-On FlangeCommonly used in pipeline systems, allowing the flange to slide over the pipe and be welded in place.
Flange Faces and Connection MethodsStainless steel flanges typically have two types of flange faces and connection methods:
– Flat FaceForging the blanks into the desired flange shape, enhances their mechanical properties.
– Raised FaceThe Flange face is slightly raised, often used in high-pressure or high-temperature applications, and sealed with gaskets.
Manufacturing ProcessThe general manufacturing process for stainless steel flanges includes:
– CuttingCutting the required flange blanks from raw stainless steel materials.
– ForgingForging the blanks into the desired flange shape, enhancing their mechanical properties.
– MachiningProcessing the forged flanges, including hole drilling, thread machining, and surface finishing.
– InspectionConducting various quality inspections to ensure compliance with standards and specifications.
– Packaging and DeliveryPackaging the final stainless steel flange products and delivering them to customers or project sites.

This comprehensive table provides detailed information about the features, performance, common material grades, specification sizes, standards, types, flange faces and connection methods, and the manufacturing process of stainless steel flanges. It will help you gain a comprehensive understanding of stainless steel flanges’ characteristics, enabling you to make informed decisions regarding material and specification choices to meet specific engineering requirements. Please note that selecting the right specifications, sizes, and flange types is crucial to ensuring the effectiveness and reliability of flanges in a system.

We carry a large inventory of 304 and 316 stainless steel flanges in many types and sizes. We stock hundreds of high-quality stainless steel flanges to meet your needs and piping specifications. We have an extensive inventory of multiple stainless steel flanges. Most of our high-quality, flanges are ready to ship upon request.

Stainless steel Flange types including blind, butt weld, lap joint, slip-on, socket weld, and threaded, are available in a variety of sizes and shapes.
Select from stainless pipe flanges such as stainless steel blind plate flanges, stainless raised face blind flanges, stainless lap joint flanges, stainless steel slip-on plate flanges, raised face socket weld flanges, raised face threaded flanges, raised face weld neck flanges, raised face slip-on flanges.

We also carry a line of iron flanges and gasket kits in a variety of materials including rubber, non-asbestos, and Teflon.

Speak to one of our specialists and find out which flange products are available to meet your flange and piping specifications. View an overview of our stainless steel product offerings.

They help in avoiding leaks in pipelines under high pressure. These flanges provide access to a line of metering liquids or gases. They are installed together with orifice plates or flow nozzles. Blind flanges don’t have a bore and are used to seal piping systems or vessels.

The most commonly used flanges are weld neck flange, slip-on flange, blind flange, socket weld flange, threaded flange, and lap joint flange (RTJ Flange). This type of connection in a pipe flange allows for ease of disassembly and separation for repair and regular maintenance.

Select from stainless pipe flanges such as stainless steel blind plate flanges, stainless raised face blind flanges, stainless lap joint flanges, stainless steel slip-on plate flanges, raised face socket weld flanges, raised face threaded flanges, raised face weld neck flanges, raised face slip-on flanges.

Stainless steel flange simplified as SS flange, refers to flanges that are made of stainless steel. Common material standards and Grades are ASTM A182 Grade F304/L and F316/L, with pressure ratings from Class 150, 300, 600, etc to 2500.

316L Flange is an improved version of 304 due to the addition of molybdenum and a slightly higher nickel content. The resultant composition of 316 gives the steel improved corrosion resistance in many aggressive environments.

As you may have noticed, the grades of stainless steel are divided into three categories: Austenitic, Ferritic, and Martensitic. This classification depends on their structure and composition. The three types will have differing levels of the elements carbon, chromium, and nickel.