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ASME B16.5 Flanges

For essential pipe-to-pipe connectivity across diverse industrial systems, ASME B16.5 Flanges from Fortis Forge are highly regarded for their exceptional strength, precision fit, and resistance to pressure, corrosion, and mechanical stress. These flanges are engineered in compliance with ASME B16.5, ASTM A105, and applicable DIN specifications to meet global standards for quality, safety, and performance.

Manufactured using carbon steel or mild steel, Fortis Forge flanges deliver outstanding mechanical properties and dimensional accuracy—making them ideal for use in a wide range of pressure classes and piping configurations. Whether for low-pressure or moderate-pressure applications, our flanges ensure consistent alignment and secure connections.

Through advanced CNC machining, controlled forging, and rigorous inspection protocols, Fortis Forge produces ASME B16.5 flanges with excellent sealing integrity and structural reliability. These flanges are suitable for indoor and outdoor systems and are designed to handle challenging conditions in industries such as oil & gas, power generation, petrochemicals, refineries, chemical plants, and water treatment facilities.

Available in multiple types including Slip On (SO), Weld Neck (WN), Blind (BL), Socket Weld (SW), Threaded/Socket Weld (TH), and Lap Joint (LJ), and in various facing styles such as Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ), our ASME B16.5 Flanges offer a comprehensive and cost-effective solution for maintaining fluid handling system integrity in critical operations.

ASME B16.5 Flanges – Carbon Steel & Mild Steel Flange Manufacturer in India, Class 150 to Class 2500

Size
½” to 24” (DN15–DN600)
Standard
ASME B16.5
Material
Carbon Steel (ASTM A105) / Mild Steel (IS 2062) / Alloy Steel / Stainless Steel
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What is an ASME B16.5 Flange?

ASME B16.5 Flanges are standardized pipe flanges and flanged fittings that cover sizes from ½” to 24”, designed according to the American Society of Mechanical Engineers (ASME) B16.5 specification.
This standard defines dimensions, pressure ratings, tolerances, and materials for flanges used in piping systems across various industries.

They are available in multiple types and pressure classes to suit diverse applications, ensuring interchangeability and reliable sealing in high-pressure and high-temperature environments.

Types of ASME B16.5 Flanges

Weld Neck Flanges (WN) → High-strength, hubbed flanges for critical service.
Slip-On Flanges (SO) → Easy to install and align; cost-effective.
Blind Flanges (BL) → Used to seal the end of a piping system.
Socket Weld Flanges (SW) → Ideal for small-diameter, high-pressure lines.
Threaded Flanges (TH) → No welding required, suitable for low-pressure systems.
Lap Joint Flanges (LJ) → Used with stub ends for easy disassembly.
Reducing Flanges → For connecting pipes of different sizes.
Orifice Flanges → Designed for flow measurement devices.

Material Grades We Use

At Fortis Forge, we manufacture ASME B16.5 flanges in a wide range of materials to meet your project’s requirements:

Carbon Steel (ASTM A105 / A350 LF2)
→ High strength, excellent mechanical properties, suitable for high-pressure services.
Mild Steel (IS 2062)
→ Economical, easy to machine, suited for general applications.
Stainless Steel (ASTM A182 F304 / F316)
→ Excellent corrosion resistance for chemical, marine, and food-grade applications.
Alloy Steel (ASTM A182 F11 / F22)
→ Superior performance in high-temperature and high-pressure systems.

Manufacturing Standards at Fortis Forge

Hot Forging & CNC Machining for precision and durability
Heat Treatment to enhance strength and toughness
Non-Destructive Testing (NDT) to detect internal or surface defects
Hydrostatic Testing for pressure performance validation
Surface Finishes as per MSS-SP-6 & ASME B46.1
Mill Test Certificates (MTCs) ensuring full traceability

Applications Across Industries

Fortis Forge ASME B16.5 Flanges are widely used in:

Oil & Gas Processing
Power Generation (Thermal, Nuclear, Renewable)
Petrochemical & Chemical Plants
Marine & Offshore Engineering
Water Treatment & Desalination Plants
HVAC & Firefighting Systems

Why Choose Fortis Forge?

Strict Compliance with ASME B16.5 standards
High-Quality Materials with international certifications
Custom Manufacturing for non-standard sizes and materials
Competitive Pricing & Timely Delivery
Global Export Capability with secure packaging

ASME B16.5 Flanges – Class 150/300/600, Carbon Steel & Mild Steel Flanges, ASTM A105 Forged Flanges, High Pressure CS/MS Flanges, RF/FF/RTJ Face Flange Manufacturer in India

As a leading manufacturer of ASME B16.5 Flanges, Fortis Forge is committed to delivering precision-engineered flanges that meet the most stringent international standards. Each flange is manufactured using advanced machining techniques, accurate drilling, and rigorous quality checks to ensure exceptional sealing performance, dimensional accuracy, and long-term reliability in critical piping systems. Our focus on quality and consistency sets us apart in India’s competitive flange manufacturing industry.

ASME B16.5 Flanges are available in various types including Weld Neck, Slip On, Blind, Threaded/Socket Weld, and Socket Weld, and are suitable for pressure ratings from Class 150 to Class 2500. These flanges are extensively used in oil & gas, petrochemicals, power generation, refineries, and water treatment projects due to their strength, precision, and versatility.

Manufactured from high-quality Carbon Steel (ASTM A105) or Mild Steel (IS 2062), Fortis Forge flanges are designed to withstand high pressure, corrosive environments, and mechanical stress. Our flanges comply with ASME B16.5 dimensional and tolerance requirements, ensuring full compatibility and easy integration into industrial piping systems across global markets.

Whether for standard or customized requirements, Fortis Forge offers robust and cost-effective ASME B16.5 Flange solutions tailored to your specific project needs.

ASME B16.5 Flanges, Carbon Steel ASME B16.5 Flange Fittings, Mild Steel ASME B16.5 Flanges, ASTM A105 ASME B16.5 Flange, Class 150 & Class 300 ASME B16.5 Flanges, Forged Steel Pipe Flanges, ASME B16.5 Flange Manufacturers in India

Standard ASME B16.5
Size Range ½” to 24” (DN15 to DN600)
Flange Types Slip On (SO), Weld Neck (WN), Blind (BL), Socket Weld (SW), Threaded/Socket Weld (TH), Lap Joint (LJ)
Pressure Class Class 150, 300, 600, 900, 1500, 2500
Material Grades Carbon Steel (ASTM A105), Mild Steel (IS 2062), Alloy Steel, Stainless Steel
Facing Type Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Applications Oil & Gas, Petrochemical, Power Plants, Refineries, Water Treatment, Industrial Pipelines

The ASME B16.5 Flange price depends on key factors such as size (½” to 24”), pressure class (150#, 300#, 600#, etc.), facing type (Raised Face, Flat Face, RTJ), material grade (ASTM A105, IS 2062), and order volume. Typically, the price for carbon steel or mild steel ASME B16.5 flanges ranges from ₹45 to ₹950 per piece, based on the flange type and specification. As a reliable ASME B16.5 flange manufacturer and supplier in India, Fortis Forge ensures precision-engineered flanges with competitive pricing, strict dimensional tolerances, and outstanding product integrity to meet the demands of high-performance industrial piping systems.

Quality Assurance

To preserve the high standards of our selection of Forged Fittings, Buttweld Fittings, Flanges and we have always adhered to a systematic quality management process.

Team of Experts

Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success.

ASME B16.5 MATERIAL	GRADE	UNS	WNR
Carbon Steel	ASTM A105	K03504	1.0432
Mild Steel	IS 2062	—	—
Stainless Steel 304	ASTM A182 F304	S30400	1.4301
Stainless Steel 316	ASTM A182 F316	S31600	1.4401

If you would like to inquire or place an order.
+91 83330 05894

Forged Fittings, Buttweld Fittings and Flanges Manufacturer in India

Manufactured from high-strength carbon steel grades
Available in forged, buttweld, and flange configurations
Precision-machined for leak-proof, high-pressure applications
Heat-treated and normalized to ensure durability and strength
Tested for dimensional accuracy and pressure resistance
Corrosion-resistant coatings available on request