Slip-On Flanges Manufacturer in India

Forxar Industries Pvt. Ltd. is a trusted Slip-On Flanges Manufacturer in India, offering precision-engineered industrial flanges designed for secure, cost-effective, and efficient piping connections. Our Slip-On Flanges, also known as SO Flanges or Slip-On Weld Flanges, are widely used in industrial piping systems where easy installation, proper alignment, and dependable performance are essential.

Slip-On Flanges feature an internal bore slightly larger than the outside diameter of the pipe, allowing the flange to slide over the pipe before welding. They are generally secured using fillet welds at the outside flange hub and inside the flange bore, creating a permanent connection between the flange and pipe.

Manufactured using carefully selected materials and precision machining processes, Forxar Slip-On Flanges provide dimensional accuracy, structural reliability, and long service life in suitable industrial applications.

Our industrial Slip-On Flanges are used in oil and gas, petrochemical, chemical processing, power generation, water treatment, and general engineering industries.

Why Choose Forxar – Slip-On Flanges Manufacturer in India?

As an experienced Slip-On Flanges Manufacturer in India, Forxar Industries offers industrial flange solutions designed to simplify installation while maintaining quality and durability.

Key features and benefits include:

Easy Installation: The flange slides over the pipe, allowing convenient positioning before welding.
Cost-Effective Design: Typically requires less complex flange machining compared with weld neck flanges.
Accurate Alignment: The slip-on construction allows adjustment before final welding.
Secure Welded Connection: Properly executed internal and external fillet welds provide dependable flange attachment.
Precision Manufacturing: Accurate flange dimensions, bolt holes, and sealing faces support reliable assembly.
Material Versatility: Available in carbon steel, stainless steel, alloy steel, and selected special alloys.
Reliable Sealing Performance: Appropriate flange facing, gasket selection, bolting, and installation help maintain joint integrity.
Customized Manufacturing: Sizes, pressure classes, flange facings, and material grades can be supplied according to customer specifications.

Forxar Slip-On Flanges offer a practical solution for industrial piping systems requiring installation efficiency and dependable mechanical connections.

Slip-On Flanges Specifications and Materials

Forxar manufactures and supplies Slip-On Flanges according to applicable standards, approved drawings, and customer technical requirements.

Common material options include:

Carbon Steel – ASTM A105
Stainless Steel – ASTM A182 F304 / F316 / F316L
Low-Temperature Carbon Steel – ASTM A350 LF2
Alloy Steel – Selected ASTM A182 grades
Duplex and Super Duplex Stainless Steel
Monel, Inconel, Hastelloy, and other special alloys on request

Technical specifications and options:

Product Type: Slip-On Flange / SO Flange / Slip-On Weld Flange
Size Range: As per applicable standards and project requirements
Pressure Classes: Applicable ASME pressure classes, subject to flange type and size limitations
Flange Facing: Raised Face (RF) and Flat Face (FF), as specified
Connection Type: Slip-On with Fillet Welding
Manufacturing Standard: ASME B16.5, where applicable
Inspection: Material verification, dimensional inspection, and additional testing as required

Slip-On Flanges must be selected according to the applicable pressure-temperature ratings, material specifications, welding requirements, and piping design standards.

For detailed technical requirements, refer to the official ASME B16.5 Pipe Flanges and Flanged Fittings Standard.

How Do Slip-On Flanges Work?

Slip-On Flanges are designed with a bore diameter slightly larger than the pipe outside diameter, allowing the flange to slide easily into position.

During installation, the flange is placed over the pipe and adjusted for alignment with the mating flange. Once correctly positioned, the flange is attached using appropriate fillet welds according to the approved welding procedure and piping requirements.

The flange face is then connected to another compatible flange using a suitable gasket, bolts, and nuts.

Unlike lap joint flanges, Slip-On Flanges are permanently welded to the pipe and do not rotate freely after installation.

Their straightforward construction and installation process make them suitable for many industrial piping applications where the governing piping code permits their use.

Industrial Applications of Slip-On Flanges

Forxar Slip-On Flanges are used across multiple industries requiring dependable piping connections.

Oil & Gas Industry: Suitable for selected refinery, utility, and processing pipelines where slip-on connections are permitted.

Chemical & Petrochemical Plants: Used in appropriate process piping systems with compatible materials and operating conditions.

Power Generation: Applied in utility water, cooling systems, and other approved auxiliary piping applications.

Water Treatment Plants: Used in water distribution, filtration, pumping, and wastewater treatment pipelines.

Marine & Shipbuilding: Suitable for selected seawater and utility piping systems using appropriate corrosion-resistant materials.

Industrial Manufacturing: Used in plant piping, equipment connections, and general engineering installations.

Slip-On Flanges and Industrial Valve Solutions from Forxar

As a reliable Slip-On Flanges Manufacturer in India, Forxar Industries also provides industrial valves and piping components designed for efficient flow control, isolation, and process reliability.

Explore our specialized valve products:

Bellow Seal Gate Valve – Designed for dependable flow isolation and reduced external stem leakage in critical piping applications.
Bellow Seal Globe Valve – Engineered for flow regulation and improved stem sealing performance.
Bellow Seal Control Valve – Suitable for accurate automated flow control and industrial process regulation.
Bellow Seal Euro Chlor Valve – Specialized valve solutions for suitable chlorine and chlor-alkali processing applications.

Our flange and valve products support reliable industrial piping systems and engineered process solutions.

Frequently Asked Questions About Slip-On Flanges

What is a Slip-On Flange?

A Slip-On Flange is a pipe flange designed to slide over the outside diameter of a pipe and be permanently attached using suitable fillet welds.

What are the advantages of Slip-On Flanges?

Slip-On Flanges offer convenient installation, easy positioning, relatively simple manufacturing, and potentially lower initial costs compared with certain other flange types.

What is the difference between Slip-On and Weld Neck Flanges?

Slip-On Flanges slide over the pipe and are attached using fillet welds, while Weld Neck Flanges have a tapered hub and are generally connected using a butt weld.

Are Slip-On Flanges suitable for high-pressure applications?

Their suitability depends on the flange type, pressure class, pipe dimensions, design temperature, welding details, and governing piping code. Weld Neck Flanges may be preferred for more demanding services.

Can Slip-On Flanges be reused?

A Slip-On Flange remains welded to its pipe section. The bolted joint can be dismantled for maintenance, but removing the flange from the pipe generally requires cutting or removing the welds.

Which standards apply to Slip-On Flanges?

ASME B16.5 provides applicable requirements for flange dimensions, materials, pressure-temperature ratings, and tolerances. Welding and installation must also comply with the relevant piping code.