Slip On Flange Manufacturer & Supplier in India
Hi-Tech Engineering is a Slip On Flange Manufacturer & Supplier in India, offering forged slip on flanges for industrial piping systems, process plants, refineries, power generation facilities, and heavy engineering applications. We supply carbon steel, stainless steel, and alloy steel slip on flanges in accordance with ASME, ANSI, DIN, EN, and JIS standards for reliable pipe connections.
Slip On Flanges are widely used in low to medium pressure piping systems due to their simple design, ease of installation, and cost-effectiveness. These flanges are designed to slide over the pipe and are welded from both inside and outside, providing sufficient strength and leak resistance for various industrial applications.
Available in sizes from ½" to 60" NB and pressure ratings from Class 150 to Class 2500, our slip on flanges can be supplied in standard as well as custom dimensions according to customer drawings and project specifications.
What is a Slip On Flange?
A Slip On Flange is a type of pipe flange that is designed to slide over the outside diameter of a pipe before being welded in position. Unlike Weld Neck Flanges, Slip On Flanges have a slightly larger bore than the pipe OD, allowing easy alignment during installation.
The flange is secured using fillet welds on both the inside and outside of the pipe, creating a strong and economical connection suitable for various process piping systems.
Slip On Flanges are also commonly known as SO Flanges, Raised Face Slip On Flanges (RF), Flat Face Slip On Flanges (FF), and ASME B16.5 Slip On Flanges depending on their design and facing type.
Their simple construction and lower machining requirements make them one of the most commonly used flange types in industrial piping installations.
Types of Slip On Flanges
Raised Face Slip On Flange (RF)
Raised Face Slip On Flanges feature a raised gasket seating area that improves sealing efficiency and gasket compression. These are the most commonly used slip on flanges in industrial piping systems.
Flat Face Slip On Flange (FF)
Flat Face Slip On Flanges have a completely flat sealing surface and are generally used with cast iron valves, pumps, and low-pressure equipment requiring full-face gaskets.
Ring Type Joint Slip On Flange (RTJ)
RTJ Slip On Flanges are designed for high-pressure and high-temperature services where superior sealing performance is required. They use metallic ring gaskets for critical applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Slip On Flange (RF / FF / RTJ) |
| Size Range | 1/2" to 60" NB |
| Pressure Class | Class 150, 300, 400, 600, 900, 1500, 2500 |
| Face Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Standards | ASME B16.5, ASME B16.47, DIN, EN 1092-1, JIS |
| Connection Type | Slip Over Pipe & Fillet Welded |
| Manufacturing Process | Forged & Machined |
| Material Grades | ASTM A105, ASTM A350 LF2, ASTM A182 F304/F304L, ASTM A182 F316/F316L, ASTM A182 F11, F22 |
| Inspection | Visual & Dimensional Inspection |
| Surface Finish | Stock Finish / Serrated Finish |
| Applications | Process Piping, Water Distribution Lines, Utility Services, Low to Medium Pressure Piping Systems |
| Industries Served | Oil & Gas, Petrochemical Plants, Power Generation, Chemical Processing Industries, Water Treatment Facilities |
Available Material Grades
| Material Category | Available Grades |
|---|---|
| Carbon Steel | ASTM A105, ASTM A350 LF2, ASTM A694 F52, F60, F65, F70 |
| Stainless Steel | ASTM A182 F304, F304L, F316, F316L, F321 |
| Alloy Steel | ASTM A182 F11, F22, F5, F9, F91 |
ASME B16.5 Slip On Flanges
ASME B16.5 Slip On Flanges are manufactured according to internationally recognized dimensional standards to ensure interchangeability, proper fitment, and reliable performance in industrial piping systems. These flanges are available in various pressure classes, facing types, and material grades to suit diverse operating conditions.
Class 150 to Class 2500 Slip On Flanges
We supply Slip On Flanges in Class 150, 300, 400, 600, 900, 1500, and 2500 pressure ratings for industrial piping applications. Selection of the pressure class depends upon operating pressure, temperature, fluid characteristics, and project specifications.
Pressure Classes
Carbon Steel Slip On Flanges
Carbon Steel Slip On Flanges are widely used due to their excellent mechanical strength, durability, and cost-effectiveness. ASTM A105 and ASTM A350 LF2 grades are commonly selected for oil & gas, refinery, and general industrial applications.
Stainless Steel Slip On Flanges
Stainless Steel Slip On Flanges provide excellent corrosion resistance and are suitable for chemical processing, food processing, pharmaceutical, and marine environments. Popular grades include ASTM A182 F304, F304L, F316, and F316L.
Alloy Steel Slip On Flanges
Alloy Steel Slip On Flanges are designed for high-temperature and high-pressure services found in thermal power plants, petrochemical facilities, and heavy process industries. Common grades include ASTM A182 F11, F22, and F91.
Applications & Industries Served
Slip On Flanges are widely used in industrial piping systems where easy installation, cost-effective pipe connections, and reliable sealing performance are required. They are commonly used in low to medium pressure piping applications across process industries, refineries, petrochemical plants, power generation facilities, and water treatment systems.
- ✓ Process piping systems
- ✓ Water distribution networks
- ✓ Cooling water lines
- ✓ Utility piping systems
- ✓ Chemical processing lines
- ✓ Fire protection systems
- ✓ Compressed air systems
- ✓ Low & medium pressure services
Oil & Gas Industry
Used in utility piping systems, water lines, and process piping applications where easy installation and reliable sealing are required.
Power Generation Plants
Installed in cooling water systems, auxiliary piping, and low to medium pressure utility services.
Petrochemical Industry
Used in process piping networks handling various fluids and non-critical services.
Refineries
Widely used in utility pipelines, water services, and general process piping applications.
Chemical Processing Plants
Suitable for chemical transfer lines and process piping systems requiring corrosion-resistant flange connections.
Steel & Heavy Engineering Industry
Used in industrial piping networks, utility systems, and equipment connections across heavy engineering facilities.
Dimensions & Weight Chart
Slip On Flange dimensions and weights vary according to pressure class, material grade, facing type, and applicable flange standard. Hi-Tech Engineering supplies Slip On Flanges in accordance with ASME B16.5, ASME B16.47 Series A & B, DIN, EN 1092-1, and JIS standards. Standard sizes are available from 1/2" NB to 60" NB with pressure ratings ranging from Class 150 to Class 2500.
A Slip On Flange is designed to slide over the outside diameter of a pipe and is secured by fillet welds on both the inside and outside of the connection. Key dimensional requirements include outside diameter (OD), flange thickness, bore diameter, bolt circle diameter (BCD), number of bolt holes, hub dimensions, facing dimensions, and overall flange weight. These dimensions are essential for proper alignment, gasket sealing, and reliable performance under operating pressure and temperature conditions.
We supply Carbon Steel, Stainless Steel, and Alloy Steel Slip On Flanges for process piping systems, water distribution networks, chemical processing plants, refineries, petrochemical facilities, power generation plants, and other industrial applications. Standard as well as custom dimensions, drilling patterns, and machining can be provided according to customer drawings and project specifications.
Inspection, Testing & Certification
Every Slip On Flange is supplied with strict quality control measures to ensure dimensional accuracy, material compliance, weld integrity, and project-specific requirements.
- ✓ Visual Inspection
- ✓ Dimensional Inspection
- ✓ Material Verification
- ✓ Positive Material Identification (PMI)
- ✓ Ultrasonic Testing (UT)
- ✓ Material Test Certificate (MTC)
- ✓ Inspection Reports
We also supply other forged flange types including Weld Neck Flanges, Blind Flanges, Threaded Flanges, and Socket Weld Flanges for industrial piping applications.
For more information or to discuss your requirements, Contact us now for the best price and fast delivery. Call +91 9555009232 or email info@hitech-engineering.in .