Large Diameter Flanges – Manufacturer, Exporter, Supplier & Stockist in India

Vandan Alloys is a Mumbai, India based manufacturer, exporter, supplier and stockist of Large Diameter Flanges for heavy-duty piping, oil & gas, petrochemical, refinery, power, water infrastructure and industrial projects.

We supply large diameter flanges in different materials, flange types, sizes, pressure classes, facings and dimensional configurations according to applicable standards, project specifications and customer drawings.

Large Diameter Flange Types

Our large diameter flange range includes:

• Large Diameter Weld Neck Flanges

• Large Diameter Blind Flanges

• Large Diameter Slip-On Flanges

• Large Diameter Plate Flanges

• Large Diameter Lap Joint Flanges

• Large Diameter Orifice Flanges

• Large Diameter Long Weld Neck Flanges

• Large Diameter RTJ Flanges

• Custom Large Diameter Flanges

• Drawing Based Large Diameter Flanges

The suitable flange type depends on the piping design, connection method, pressure class, material, size and project requirements.

Large Diameter Flange Sizes

Vandan Alloys supplies large diameter flanges for piping systems where standard small and medium bore flange dimensions are not sufficient.

Depending on the applicable standard and manufacturing method, we can support requirements for large NPS sizes including 14", 16", 18", 20", 22", 24", 26", 28", 30", 32", 36", 40", 42", 48" and larger sizes against applicable specifications and drawings.

For very large diameter requirements, customers can provide the required outside diameter, bore, thickness, PCD, bolt-hole details and drawing for review.

Large Diameter Flange Materials

Large diameter flanges can be supplied in a wide range of materials, including:

• Carbon Steel

• Alloy Steel

• Stainless Steel

• Duplex Stainless Steel

• Super Duplex Stainless Steel

• Nickel Alloys

• Inconel

• Incoloy

• Monel

• Hastelloy

• Titanium

• Other specified materials

Material selection depends on operating temperature, pressure, fluid service, corrosion conditions and applicable engineering requirements.

Large Diameter Flange Standards

Depending on size and application, large diameter flanges can be supplied according to applicable standards such as:

ASME B16.47, ASME B16.5, EN 1092-1, DIN, JIS and BS, along with the applicable material specification.

For large diameter applications, the dimensional standard must be confirmed before manufacturing because flange dimensions and configurations can vary between standards.

ASME B16.47 Large Diameter Flanges

ASME B16.47 covers large diameter steel flanges for applicable nominal pipe sizes.

Where ASME B16.47 is specified, flange dimensions are selected according to the applicable series and size requirements.

Series A and Series B are not automatically interchangeable, so the required series should be confirmed with the customer or project specification before production.

Vandan Alloys can review the required Series A or Series B configuration based on the project requirement.

Large Diameter Flange Pressure Classes

Large diameter flanges can be supplied in applicable pressure classes including:

Class 150, Class 300, Class 400, Class 600 and other specified classes, depending on size, material and applicable standard.

Higher-pressure large diameter requirements can also be reviewed against the applicable standard and engineering specification.

Pressure-temperature ratings depend on the selected material, size, class and applicable standard.

Large Diameter Flange Facings

Available flange facing configurations may include:

• Raised Face (RF)

• Flat Face (FF)

• Ring Type Joint (RTJ)

• Other specified facing arrangements

Facing selection should correspond to the mating flange, gasket system and applicable piping specification.

Specifications

Large Diameter Flanges are supplied with dimensions according to the selected standard or approved customer drawing.

Important dimensional requirements can include outside diameter, inside diameter/bore, flange thickness, PCD, bolt-hole diameter, number of holes, facing details and overall flange configuration.

For custom requirements, dimensions can be manufactured according to an approved drawing rather than a standard flange dimension.

Applications of Large Diameter Flanges

Large diameter flanges are used in major piping and infrastructure systems, including:

• Oil & Gas Pipelines

• Refineries

• Petrochemical Plants

• Power Plants

• Water Treatment Projects

• Desalination Plants

• Chemical Industries

• Process Plants

• Offshore Projects

• Industrial Pipeline Systems

• Heavy Engineering

• Large Equipment Connections

They are commonly required for connecting large-diameter pipes, valves, vessels, equipment and pipeline components.

Custom Large Diameter Flanges

Vandan Alloys also supplies custom large diameter flanges manufactured according to customer drawings.

We can review requirements involving:

• Special outside diameter

• Special bore

• Increased or reduced thickness

• Customized PCD

• Special bolt-hole arrangement

• Special facing

• RTJ groove requirements

• Non-standard flange dimensions

• Equipment connection flanges

• Drawing-specific flange profiles

Customers can send their drawing, dimensional sketch or technical specification for manufacturing feasibility and quotation.

Manufacturing & Inspection

Large diameter flanges require careful control of dimensions and flange geometry. Vandan Alloys supplies products according to the specified material, standard and customer requirements.

Inspection can include chemical composition, mechanical properties, dimensional inspection, visual inspection, hardness testing, PMI and other specified tests.

Material Test Certificates can be supplied, including EN 10204 Type 3.1 documentation where required. Third-party inspection can also be arranged according to customer or project requirements.

Large Diameter Flanges Manufacturer & Exporter from India

Vandan Alloys supplies Large Diameter Flanges from Mumbai, India to customers in India and international markets.

We support requirements from EPC contractors, engineering companies, distributors, stockists, refineries, petrochemical plants, pipeline companies and industrial procurement teams.

Our supply capability covers standard large diameter flanges as well as custom and drawing-based requirements.

Why Choose Vandan Alloys?

• Large Diameter Flanges in multiple materials

• Large NPS sizes and custom dimensions

• ASME B16.47 Series A & Series B options

• Weld Neck, Blind, Slip-On, Plate and other types

• Multiple pressure classes

• RF, FF and RTJ configurations

• Standard and drawing-based manufacturing

• Material and dimensional inspection

• EN 10204 Type 3.1 MTC available

• Export packing and international shipment support

• Mumbai-based manufacturer and exporter

How to Order Large Diameter Flanges

For quotation, please provide:

Size + Flange Type + Material Grade + Class/PN + Facing + Standard + Quantity + Delivery Location

For large or non-standard requirements, please send the drawing or dimensional details including OD, bore, thickness, PCD and bolt-hole information.

Vandan Alloys 

Manufacturer of All Types of Flanges

3/5, Sakar Bhavan, Ground Floor, 6th  Khetwadi lane, SVP Road ,Mumbai – 400 004. India

TEL+91 022 6610 9925Mobile no: 09892882255  GSTIN:  27AUMPS2067F1ZB

Email: info@vandanalloys.com ; Web: www.vandanalloys.com

Please visit Our Flanges Division:www.vandanalloys.net

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Large Diameter Flanges Manufacturer & Exporter in India | Vandan Alloys

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Vandan Alloys manufactures and exports Large Diameter Flanges in Carbon Steel, Alloy Steel, Stainless Steel, Duplex and Nickel Alloys, including ASME B16.47.

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