Specification

Flanges Specifications

MRB Forge manufactures industrial flanges in accordance with globally recognized standards and customer-specific requirements.

Specification Details
Product Industrial Flanges
Size Range ½" NB to 60" NB
Pressure Class 150#, 300#, 600#, 900#, 1500#, 2500#
Standards ASME, ANSI, DIN, EN, JIS
Face Types Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Manufacturing Process Forged & Machined
Inspection Third-Party Inspection Available
Testing PMI, Hydro, UT, RT, Hardness Testing
Origin India
Types

Types of Flanges

MRB Forge manufactures a wide range of industrial flanges suitable for diverse piping and process applications.

Weld Neck Flanges

Weld neck flanges are designed for high-pressure and high-temperature applications. Their long tapered hubs provide excellent stress distribution, making them ideal for critical piping systems in refineries, power plants, and chemical industries.

Weld Neck Flanges
Slip-On Flanges

Slip-on flanges are easy to install and offer a cost-effective solution for low to medium-pressure systems. These flanges are widely used in water treatment plants and industrial piping networks.

Slip-On Flanges
Blind Flanges

Blind flanges are used to seal the ends of pipelines, valves, and pressure vessel openings. They provide easy access for maintenance and future system expansion.

Blind Flanges
Socket Weld Flanges

Socket weld flanges are commonly used in smaller diameter high pressure piping systems, often used alongside socket weld fittings in compact piping networks.

Socket Weld Flanges
Threaded Flanges

Threaded flanges are suitable for low pressure applications where welding is not practical, commonly paired with threaded fittings for easy installation.

Threaded Flanges
Lap Joint Flanges

Lap joint flanges are designed for systems requiring frequent dismantling and inspection. They are commonly used with stub ends for easy alignment and maintenance.

Lap Joint Flanges
Spectacle Blind Flanges

Spectacle blinds are used to isolate sections of pipelines during maintenance and inspection operations. They offer a practical solution for process safety.

Spectacle Blind Flanges
Orifice Flanges

Orifice flanges are specifically designed for flow measurement applications and accommodate orifice plates within piping systems.

Orifice Flanges

The opportunity to work abroad is a popular prospect, oneMRB Forge manufactures flanges in a wide variety of materials to meet the performance requirements of different industries and operating environments.

Stainless Steel Flanges

Stainless steel flanges offer excellent corrosion resistance, durability, and strength. Common grades include SS 304, 304L, 316, 316L, 321, and 347.

Carbon Steel Flanges

Carbon steel flanges provide exceptional strength and cost-effectiveness for industrial piping systems. Popular grades include ASTM A105, A350 LF2, and A694.

Alloy Steel Flanges

Alloy steel flanges are engineered for high-temperature and high-pressure applications where enhanced mechanical properties are required.

Duplex Steel Flanges

Duplex steel flanges combine high strength with excellent corrosion resistance, making them suitable for offshore and marine applications.

Super Duplex Steel Flanges

Super duplex steel flanges offer superior resistance to chloride corrosion, pitting, and stress corrosion cracking in aggressive environments.

Nickel Alloy Flanges

Nickel alloy flanges are ideal for highly corrosive applications involving acids, chemicals, and elevated temperatures.

Dimensions, Sizes & Pressure Classes

MRB Forge supplies flanges in a broad range of dimensions and pressure ratings to accommodate diverse piping requirements.
Available pressure classes include:

  • Class 150
  • Class 300
  • Class 600
  • Class 900
  • Class 2500
  • Class 1500

Our flanges are manufactured with precise dimensional tolerances to ensure compatibility with global piping standards and easy installation. Customized dimensions and special requirements can also be accommodated based on project specifications.

Testing & Quality Assurance

Quality is a core part of every manufacturing process at MRB Forge. Our flanges undergo stringent inspection and testing procedures to ensure compliance with international standards and customer requirements.
Testing capabilities include:

  • Positive Material Identification (PMI)
  • Hydrostatic Testing
  • Ultrasonic Testing (UT)
  • Radiographic Testing (RT)
  • Hardness Testing
  • Visual Inspection
  • Dimensional Inspection
  • Third-Party Inspection

These quality control measures ensure that every flange delivered meets the highest standards of safety, reliability, and performance.

MRB Forge manufactures flanges in accordance with internationally recognized standards to ensure quality, interchangeability, and reliable performance.

Process

Flange Manufacturing Process

Our flange manufacturing process is designed to ensure dimensional accuracy, structural integrity and compliance with international standards on every order.

  • Raw Material Procurement & Mill Certificate Verification
  • Chemical Composition & Mechanical Property Testing
  • Forging & Hot Working to Required Shape
  • Heat Treatment & Normalising
  • Machining, Facing & Boring Operations
  • Bolt Hole Drilling & Tapping
  • Dimensional Inspection & Verification
  • Surface Finishing & Marking
  • Final Quality Approval & Dispatch

Each stage is carefully monitored to ensure full compliance with ASME B16.5, B16.47 and customer specific project requirements.

Industrial flanges play a critical role in piping systems across multiple industries.

Oil & Gas Industry

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Used in upstream, midstream, and downstream operations requiring reliable and leak-proof piping connections.

Petrochemical Industry

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Suitable for handling aggressive chemicals, high temperatures, and pressure-intensive processes.

Power Generation

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Used in thermal, nuclear, and renewable energy facilities for fluid transportation systems.

Chemical Processing Plants

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Provide secure and durable connections in highly corrosive environments.

Water Treatment Facilities

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Essential for water distribution, filtration, and wastewater management systems.

Marine & Offshore Industry

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Designed to withstand harsh marine environments and offshore operating conditions.

Construction & Infrastructure

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Used in industrial construction projects requiring durable piping connections.

EPC & Heavy Engineering Projects

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Widely specified by EPC contractors for large scale certified piping procurement.