Flanges

Product Details:

Additional Information:

• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Export-quality bundles Plastic-wrapped or Hessian cloth Custom marking and tagging Wooden box/crate (for export orders) End-protected with caps or rubber rings

Product Details:

Flat Face Flanges (FF) are designed to provide a smooth, even mating surface for bolting to gaskets or flat-faced equipment. At Anita Steel & Metals, we supply Flat Face Flanges in Carbon Steel, Alloy Steel, and Stainless Steel grades as per international standards like ASME, ANSI, BS, DIN, EN, and IS. Each flange is precision-machined, tested, and supplied with complete certification.

Technical Specifications

• Size Range: ½” NB to 48” NB

• Pressure Ratings: Class 150 to 2500 / PN6 to PN100

• Type: Flat Face (FF), Forged or Plate Cut

• Standards: ANSI B16.5, ASME B16.47, BS 4504, EN 1092-1

• Finish: CNC machined, smooth surface, corrosion-protective coated

• Testing: Hydro Testing, UT, PMI, DP, Hardness, TPI on request

Product Range

• Flat Face Flanges in:

  • Carbon Steel – ASTM A105, A350 LF2

  • Alloy Steel – ASTM A182 F11, F22, F5, F9

  • Stainless Steel – ASTM A182 F304, F304L, F316, F316L, F321

  • Duplex / Super Duplex – UNS S31803, S32750

  • Exotic Alloys – Inconel, Monel, Hastelloy, Nickel Alloys

• IBR Certified and Non-IBR Flanges

• Special Custom Sizes and Drilling Templates Available

Applications

• Oil & Gas Pipelines

• Chemical & Petrochemical Plants

• Marine & Offshore Engineering

• Water Distribution Systems

• Heat Exchangers & Pressure Vessels

• Power Generation & Refineries

• Pulp & Paper Industry

• HVAC & Fire Fighting Systems

Key Features

• Flat mating surface for gasket compatibility

• Excellent resistance to corrosion and scaling

• Dimensional accuracy and leak-proof fit

• Suitable for low to moderate pressure piping

• Compatible with all international piping standards

• Third Party Inspection (TPI) approved (BV, SGS, TUV, etc.)

Making Process

• Forging Process: Ring Rolling / Die Forging

• Heat Treatment: Normalized, Quenched & Tempered

• Machining: Precision CNC turning, drilling & facing

• Quality Control: Spectro Analysis, UT, MPT, Hydro Testing

• Certifications: As per EN 10204 3.1 / 3.2

Equivalent Grades Make Available

• Brand: ASM (Anita Steel & Metals)

• Certifications:

• • IBR Form IIIC

  • MTC – EN 10204 3.1 / 3.2

  • NACE MR0103 / MR0175

  • TPI Approval – BV, TUV, DNV, SGS, Lloyd’s, etc.

Documentation Provided

• MTC (Mill Test Certificate)

• IBR Form IIIC (For IBR Flanges)

• NACE Compliance Certificate

• Dimensional Inspection Report

• Heat Treatment Chart

• TPI Certificate (if applicable)

 

Additional Information:

• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Packaging Details Export Worthy Packaging Bundle with Steel Straps Anti-corrosion wrapping (oil-coated) End-cap protection (on request) HDPE/LDPE Bags, Plastic Wrapping for Protection, Wooden Crates, or Palletized Export Packing Each Flange Marked with Size, Material, Grade, Heat No., Pressure Class

Product Details:

We are engaged in offering Quality Products to our clients. Our range of all products is widely appreciated by our clients.

Additional Information:

• Item Code: Flanges
• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: As Per Standard Packaging

Product Details:

A flange is a forged or cast ring of steel designed to connect sections of pipe or join pipe to a pressure Vessel, pump or any other integral flanges assembly.

Flanges are joined to each other by bolting and joined to the piping system by welding or threading.

 

The basic types of flanges are; Slip on, Blind, Weld Neck, Threaded, Socket Weld, Lap Joint and Orifice.

 

Flanges are designed to the following pressure ratings; 150lb, 300lb, 400lb, 600lb, 900lb, 1500lb and 2500lb.

 

The most common facings machined on flanges are: 

(a) Raised face, 1/16 inch for 150lb and 300lb, ¼ inch for 400lb and heavier.

(b) Flat face, for 150lb and 300lb only, other may be flat face on request. 

(c) Ring type joint, may be applied to all pressure ratings.

TYPES & APPLICATIONS

 Slip-On Flange

The flange is slipped over the pipe and then welded both inside and outside to provide sufficient Strength and prevent leakage. This flange is used in preference to weld necks by many users because of its lower cost and the fact that less accuracy is required when cutting pipe to length.

Blind Flanges

This is a flange without a bore and is used to shut off a piping system or vessel opening. It also permits Easy access to vessels or piping systems for inspection purposes. Blind flange can be supplied with or without hubs at the manufacturers option.

Weld-Neck flange

This is designed to be joined to a piping system by buttwelding. It is relatively expensive because of Its long neck, but is preferred for high stress applications. The neck, or hub transmits stresses to the the base of the hub to the wall thickness at the butt weld, provide important reinforcement of the flange. The bore of the flange matches the bore of the pipe, reducing turbulence and erosion.

Threaded Flange

This is similar to a slip-on flange in outline, but the bore is threaded, thus enabling assembly without welding. This obviously limits its application to relatively low pressure piping systems. The flange may be welded around the joint after assembly, but this is not considered a satisfactory method of increasing its applications.

Socket Weld Flanges

This is similar to a slip-on flange in outline, but the bore is counter-bored to accept pipe. The diameter of the remaining bore is the same as the inside diameter of the pipe. The flange is attached to the pipe by a fillet weld around the hub of the flange. An optional interval weld may be applied in high stress applications. It’s biggest use is in high pressure systems such as hydraulic and steam lines.

Spectacle Flanges

This is a pressure retaining plate with one solid end and one open end connected with a web or tie-bar. In normal operation, the open end forms the seal between two flanges and permits normal flow of fluid through pipe work. If the solid end is swung into position it effectively blanks of the pipe and halts the flow.

Lap-Joint Flanges

This is again similar to a slip-on flange, but it has a radius at the intersection of the bore and the flange face to accommodate a lap stub end. The face on the stub end forms the gasket face on the flange. This type of flange is used in applications where section of piping systems need to be dismantle quickly and easily for inspection or replacement.

Additional Information:

• Production Capacity: 10000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Standard Packing

Product Details:

Additional Information:

• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Standard Packaging

Product Details:

The Raised Face (RF) type is the most applied flange face, and is easily to identify. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face.

Additional Information:

• Production Capacity: 10000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Packaging Details Export Worthy Packaging Bundle with Steel Straps Anti-corrosion wrapping (oil-coated) End-cap protection (on request) HDPE/LDPE Bags, Plastic Wrapping for Protection, Wooden Crates, or Palletized Export Packing Each Flange Marked with Size, Material, Grade, Heat No., Pressure Class

Product Details:

This is similar to a slip-on flange in outline, but the bore is threaded, thus enabling assembly without welding. This obviously limits its application to relatively low pressure piping systems. The flange may be welded around the joint after assembly, but this is not considered a satisfactory method of increasing its applications.

Additional Information:

• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: As Per Standard Packaging

Product Details:

Our range of forged steel flanges correspond to both national as well as international standards. These flanges are used to connect two pipes mechanically. Every flange is accurately drilled for easy assembly. We can manufacture forged steel flanges in different material and dimensional specifications based upon the requirements of the client. 

Grades Available

• F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L.

Product Details:

Anita Steel & Metals is a trusted supplier of ASTM A105 Spectacle Blind Flanges, offering both IBR and Non-IBR variants. These flanges are used to temporarily or permanently isolate pipe sections during maintenance or testing. Available in a wide size and pressure range, with full traceability and Mill Test Certificates (EN 10204 3.1).

📐 Product Specifications:

• Material: Carbon Steel ASTM A105

• Type: Spectacle Blind, Spacer, Spade (Paddle Blank)

• Standard: ASTM A105 / ASME SA105

• Size Range: ½” to 48” (DN15 to DN1200)

• Pressure Class: 150#, 300#, 600#, 900#, 1500#, 2500#

• Face Type: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

• Dimensions: ASME B16.5 / B16.47 Series A & B

• Approval: IBR & NON-IBR

• Finish: Black Painted / Rust Preventive Coated / Galvanized (Optional)

⚙️ Technical Details:

• Melting Process: Electric Furnace / Basic Oxygen Process

• Heat Treatment: Normalized, Annealed, Quenched & Tempered (if required)

• Testing: Hydrostatic, Ultrasonic, Radiographic, PMI Testing (on request)

• Certifications: ISO 9001:2015, IBR Certified, EN 10204 3.1, PED (Optional)

🧪 Chemical Composition (%): 💪 Mechanical Properties: 🔁 Equivalent Grades:

• EN: C22.8

• DIN: 1.0460

• JIS: STPA 25

• BS: 1501-151 Gr.28A

• IS: IS 2062 (functional equivalent in some applications)

🛠️ Product Range:

• Spectacle Blind Flanges (Fixed & Swing Type)

• Spades (Paddle Blanks)

• Spacers (Line Blanks)

• Custom Cut to Drawing / Template

• CNC Machined and Finished Pieces

🏭 Applications:

• Oil & Gas Pipelines

• Petrochemical Plants

• Thermal & Nuclear Power Plants

• Offshore & Marine Engineering

• Chemical & Fertilizer Industries

• Refineries and Process Industries

• Boiler Lines & Isolation Services

🌟 Key Features:

• IBR & NON-IBR Options

• Precision Machined & Dimensionally Accurate

• Corrosion and Pressure Resistant

• Heat Number & Batch Traceability

• Fast Delivery from Ready Stock

• ISO 9001:2015 Certified Supplier

• Custom Sizing and Fabrication Available

Additional Information:

• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock : Fast Delivery for Standard Sizes
• Packaging Details: Packaging Details Export Worthy Packaging Bundle with Steel Straps Anti-corrosion wrapping (oil-coated) End-cap protection (on request) HDPE/LDPE Bags, Plastic Wrapping for Protection, Wooden Crates, or Palletized Export Packing Each Flange Marked with Size, Material, Grade, Heat No., Pressure Class

Product Details:

We offer a comprehensive range of stainless steel flanges for application in diverse industries. These flanges are have inherent corrosion resistance, which is enhanced by the superior grain structure. Our stainless steel flanges can be customized to match various specifications of clients such as pressure ratings, dimensions, standards, etc.

Standards

• ASTM / ASME A/SA 182

Grades Available

• F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L.

Product Details:

Product Details:

Product Details:

The function of an orifice flange is to provide access to a line for metering of gases or liquids. An orifice plate is clamped between a pair of flanges when installed in a line and the whole assembly is refer to as an orifice flange union. Jack-screws within the assembly facilitate removal of the orifice plate. The orifice plate, the metering device, consists of a thin plate with a concentric, square edge, circular hole in the centre. Two pressure tap-holes are drilled in each flange to measure pressure difference through the orifice.

Additional Information:

• Production Capacity: 100 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Standard Packaging

Product Details:

ASTM SPECIFICATIONS

ASTM specifications regulate approved raw materials for which flanges can be made and specifications .

For stainless flanges are:

ASTM A.182 - Forged or Rolled Alloy Steel Pipe Flanges & Fittings for high temperature service.

ANSI AND MSS SPECIFICATIONS

The standards govern the dimensions and tolerances to which fitting are manufactured:

ANSI B. 16.5 - Steel Pipe Flanges and Flanged Fittings (½ inch to 24 inch nominal diameter)
MSS SP.6 - Flange Facings
MSS SP.25 - Marking of flanges
MSS SP.39 - Bolts and Nuts for Flanges
MSS SP.44 - Large Diameter Pipeline Flanges. (Over 24 inch dia)
API-605 - Large Diameter Flanges for petroleum Usage. (Over 24 inch dia)

The ASME Code is not a standard as such but section VIII provides the procedure for calculating dimensions

For all pressurised vessels flanges.

The following are not flange specifications but they influence the manufacture of forged steel flange

ANSI B. 31.10 - Code for Pressure Piping
ANSI B. 31.3 - Petroleum Refinery Piping
ANSI B. 31.4 - Oil Transportation Piping
ANSI B. 31.5 - Refrigeration Piping Systems
ANSI B. 31.7 - Nuclear Power Piping
ANSI B. 31.8 - Gas Transmission and Distribution Piping systems
ANSI B. 36.10 - Standard for Wrought Steel pipe
ANSI B. 36.19 - Standard for Stainless Steel Pipe
ANSI B. 16.10 - Valve Dimensions Face & End
ANSI B. 16.11 - Forged Fittings Socket Weld & Threaded

Product Details:

 

Product Details:

Anita Steel & Metals offers a complete range of ASTM A182 F11 Class 2 Alloy Steel Flanges, precisely engineered for high-temperature and high-pressure applications. These flanges are supplied in multiple face types and pressure ratings with full traceability, IBR & NACE certification, and Mill Test Certificates (EN 10204 3.1).

Product Specifications:

• Standard: ASTM A182 / ASME SA182

• Grade: F11 Class 2 (1.25% Cr - 0.5% Mo Alloy Steel)

• Type:

  • Weld Neck (WNRF / WNRTJ)

  • Socket Weld (SWRF / SWRTJ)

  • Slip-On (SORF)

  • Blind (BLRF / BLRTJ)

  • Lap Joint (LJRF)

• Size Range: ½” to 48” (DN15 to DN1200)

• Pressure Class: 150#, 300#, 600#, 900#, 1500#, 2500#

• Face Type: RF / RTJ / FF

• Dimensions: ASME B16.5 / B16.47 Series A & B

Chemical Composition (%): Mechanical Properties (Cl.2): Technical Details:

• Melting Process: Electric Furnace / Basic Oxygen Process

• Heat Treatment: Normalized & Tempered

• Testing: PMI, Ultrasonic, Hydrostatic, NACE, Radiography (on request)

• Certificates:

  • MTC as per EN 10204 3.1

  • IBR Form IIIC

  • NACE MR0175 / ISO 15156 Compliance

Equivalent Grades:

• EN: 13CrMo4-5

• DIN: 1.7335

• BS: 3604 Gr.621B

• JIS: SCMV 4

Applications:

• Power Generation (Thermal, Nuclear)

• Refinery & Petrochemical Units

• Boiler Piping Systems (IBR Approved)

• Oil & Gas Transmission Lines

• Fertilizer Plants

• High-Pressure Steam Lines

• Offshore Drilling & Heat Exchangers

Product Range Includes:

• WNRF / WNRTJ – Weld Neck Raised Face / RTJ

• SWRF / SWRTJ – Socket Weld RF / RTJ

• BLRF / BLRTJ – Blind RF / RTJ

• SORF – Slip-On Raised Face

• LJRF – Lap Joint Raised Face

• Custom Machining and Drawing-based Fabrication

Key Features:

• Designed for High Temp & Pressure

• NACE & IBR Approved

• Precision Machining and Durable Finish

• Mill Test Certificate & Full Traceability

• Quick Delivery from Ready Stock

• Export-Grade Packaging

Packaging Details:

• Bubble-Wrapped & Plastic-Coated

• Packed in Wooden Boxes or Pallets

• Each Flange Stamped with Heat Number, Grade, Size & Spec

• Export-Ready Packaging with Fumigation (If Required)

Additional Information:

• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock : Standard Size Immediate Delivery
• Packaging Details: Bubble-Wrapped & Plastic-Coated Packed in Wooden Boxes or Pallets Each Flange Stamped with Heat Number, Grade, Size & Spec Export-Ready Packaging with Fumigation (If Required)

Product Details:

We supply a full range of ASTM A182 F22 Class 3 Flanges, engineered for high-pressure, high-temperature environments, commonly used in power plants, refineries, and petrochemical installations. All flanges are available with IBR Form III, NACE MR0175, and EN 10204 3.1 MTC.

📊 Specifications:

• Material: ASTM A182 Grade F22 Class 3 (2.25% Cr - 1% Mo)

• Type:

  • Weld Neck: WNRF / WNRTJ

  • Socket Weld: SWRF / SWRTJ

  • Slip-On: SORF

  • Blind: BLRF / BLRTJ

  • Lap Joint: LJRF

• Size Range: ½” to 48” (DN15–DN1200)

• Pressure Class: 150# to 2500#

• Face Type: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF)

• Dimensions: ASME B16.5 / B16.47 A/B

🧪 Chemical Composition (%): 💪 Mechanical Properties (Class 3): ⚙️ Technical Details:

• Melting Process: Electric Furnace / Vacuum Arc Remelting (if required)

• Heat Treatment: Normalized, Tempered

• Testing: Hydro, PMI, Ultrasonic, NACE, IGC (if required)

• Standards Followed: ASTM A182, ASME B16.5/B16.47, NACE MR0175

🔁 Equivalent Grades:

• EN: 10CrMo9-10

• DIN: 1.7380

• BS: 621B / 622B

• JIS: SCMV4 / SFVC2B

🏗️ Applications:

• Superheated Steam Lines

• Petrochemical and Chemical Plants

• High-Pressure Boiler Systems

• Offshore Platforms

• Heat Exchangers & Pressure Vessels

• Oil & Gas Industry – Sour Service (NACE Certified)

🛠️ Product Range:

• Weld Neck (WNRF / WNRTJ)

• Socket Weld (SWRF / SWRTJ)

• Slip-On (SORF)

• Blind (BLRF / BLRTJ)

• Lap Joint (LJRF)

• Customized Flanges as per Drawing

🌟 Key Features:

• Suitable for High Temp & Pressure Applications

• IBR & NACE Approved with Full Traceability

• Mill Test Certificate (EN 10204 3.1) Provided

• CNC Machined & Ready-to-Install

• Immediate Delivery from Ready Stock

• ISO 9001:2015 Certified Quality System

🏷️ Make Available:

• Make: Anita Steel & Metals

• Origin: India (with Options for European or Japanese Mill on Request)

📦 Packaging Details:

• Rust-Proof Oil Coating

• Bubble-Wrapped or Poly-Coated

• Export-Grade Wooden Boxes or Pallets

• Heat Number & Spec Stamped on Each Flange

• Fumigated Boxes for International Shipping

Additional Information:

• Production Capacity: 1000 Pcs
• Delivery Time: Ready Stock : Immediate Delivery for Standard Size
• Packaging Details: Packaging Details Export Worthy Packaging Bundle with Steel Straps Anti-corrosion wrapping (oil-coated) End-cap protection (on request) HDPE/LDPE Bags, Plastic Wrapping for Protection, Wooden Crates, or Palletized Export Packing Each Flange Marked with Size, Material, Grade, Heat No., Pressure Class

Product Details:

This is designed to be joined to a piping system by buttwelding. It is relatively expensive because of Its long neck, but is preferred for high stress applications. The neck, or hub transmits stresses to the the base of the hub to the wall thickness at the butt weld, provide important reinforcement of the flange. The bore of the flange matches the bore of the pipe, reducing turbulence and erosion.

Additional Information:

• Production Capacity: 100
• Delivery Time: Ready Stock
• Packaging Details: Export-quality bundles Plastic-wrapped or Hessian cloth Custom marking and tagging Wooden box/crate (for export orders) End-protected with caps or rubber rings

Product Details:

The flange is slipped over the pipe and then welded both inside and outside to provide sufficient Strength and prevent leakage. This flange is used in preference to weld necks by many users because of its lower cost and the fact that less accuracy is required when cutting pipe to length.

Additional Information:

• Item Code: SORFFlange
• Production Capacity: 10000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: As Per Standard Packaging

Product Details:

This is similar to a slip-on flange in outline, but the bore is counter-bored to accept pipe. The diameter of the remaining bore is the same as the inside diameter of the pipe. The flange is attached to the pipe by a fillet weld around the hub of the flange. An optional interval weld may be applied in high stress applications. It’s biggest use is in high pressure systems such as hydraulic and steam lines.

Additional Information:

• Production Capacity: 10000 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Standard Packing

Product Details:

Our range of nickel alloy flanges are specially designed for high temperature and pressure applications. These flanges offer excellent resistance to a wide range of corrosive media. We can customize nickel alloy flanges for application in diverse industries based upon the customer''s requirements. 

Standards

• ASTM / ASME SB 564 / 160 / 472

Grades Available 

• UNS 2200 (NICKEL 200), UNS 4400 (MONEL 400), UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 2201 (NICKEL 201), (ALLOY 20 / 20 CB 3).

Additional Information:

• Production Capacity: 100 Pcs
• Delivery Time: Ready Stock
• Packaging Details: Standard Packaging

Product Details:

This is a flange without a bore and is used to shut off a piping system or vessel opening. It also permits Easy access to vessels or piping systems for inspection purposes. Blind flange can be supplied with or without hubs at the manufacturers option.

 

Product Details:

This is again similar to a slip-on flange, but it has a radius at the intersection of the bore and the flange face to accommodate a lap stub end. The face on the stub end forms the gasket face on the flange. This type of flange is used in applications where section of piping systems need to be dismantle quickly and easily for inspection or replacement.

Product Details:

We offer broadest range of carbon steel and alloy steel flanges in different standards and specifications. These flanges are perfect choice of high temperature and pressure applications. The close grain structure of the flanges provide resistance to a wide range of corrosive media. 

Standards

• ASTM / ASME A /SA 105 / SA 182 / 350 LF 2

Grades Available 

• UNS 2200 (NICKEL 200), UNS 4400 (MONEL 400), UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 2201 (NICKEL 201), (ALLOY 20 / 20 CB 3).