SO Flanges
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SO Flanges
SO Flanges (Slip-On Flanges)
SO Flanges, also known as Slip-On Flanges, are one of the most commonly used pipe flanges in industrial piping systems. They are designed to slide over the pipe before being welded from both the inside and outside, providing a strong, leak-proof, and cost-effective connection. Their simple design, easy installation, and reliable performance make them suitable for a wide range of low to medium-pressure applications.
At Royal Steel India, we manufacture and supply premium-quality SO Flanges in various sizes, pressure ratings, materials, and international standards. Our flanges are precision-engineered to deliver excellent dimensional accuracy, corrosion resistance, and long-lasting performance across diverse industrial applications.
SO Flanges (Slip-On Flanges) are pipe flanges with a slightly larger bore than the outside diameter of the pipe, allowing them to slide easily over the pipe before welding. Once positioned, fillet welds are applied to both sides of the flange to create a secure and leak-resistant connection.
Because of their simple installation process and economical design, SO Flanges are widely used in piping systems that operate under moderate pressure and temperature conditions.
Key Features
- Easy slip-on installation
- Welded from both inside and outside for added strength
- Cost-effective piping solution
- Excellent dimensional accuracy
- Reliable leak-proof sealing
- Good corrosion and temperature resistance
- Available in various sizes and pressure classes
- Long service life with minimal maintenance
Available Grades
We manufacture SO Flanges in various materials, including:
Available Standards
Our SO Flanges are manufactured according to:
- ASME B16.5
- ASME B16.47 Series A & B
- ANSI
- DIN
- EN
- BS
- JIS
- MSS SP-44
Pressure Ratings
- Class 150
- Class 300
- Class 600
- Class 900
- PN6
- PN10
- PN16
- PN25
- PN40
Applications
- Oil & Gas Industry
- Chemical Processing Plants
- Petrochemical Industry
- Water Treatment Plants
- Power Generation
- Marine Industry
- HVAC Systems
- Fire Protection Systems
- Food & Beverage Industry
- Industrial Process Pipelines
Why Choose Royal Steel India?
Royal Steel India is a trusted manufacturer, supplier, and exporter of premium-quality SO Flanges. We use high-quality raw materials, advanced manufacturing technology, and strict quality inspections to ensure every flange meets international standards. Our commitment to quality, competitive pricing, timely delivery, and customer satisfaction makes us a preferred choice for industrial piping solutions worldwide.
Frequently Asked Questions
What are SO Flanges?
SO Flanges, also known as Slip-On Flanges, are pipe flanges that slide over the pipe and are welded from both the inside and outside to create a secure connection.
What are the advantages of SO Flanges?
SO Flanges offer easy installation, cost-effectiveness, reliable sealing, good corrosion resistance, and excellent performance in low to medium-pressure applications.
Which industries use SO Flanges?
SO Flanges are widely used in oil & gas, petrochemical, chemical processing, water treatment, marine, power generation, HVAC, food processing, and industrial piping systems.
What materials are available for SO Flanges?
SO Flanges are available in Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel, Nickel Alloys, Inconel, Monel, Hastelloy, Titanium, and other special alloys.
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