In the world of piping and pressure systems, flanges play a vital role in joining pipes, valves, and equipment. One of the most commonly used flange types is the slip on flange. This flange is known for its simplicity, cost-effectiveness, and ease of installation, making it a preferred choice across many industries.
At Piyush Steel, we manufacture and supply a wide range of high-performance slip on flanges designed to meet both domestic and international standards.
Definition: What is a Slip On Flange?
A slip on flange (SO flange) is a type of flange that slides over the pipe and is then welded on both the inside and outside to provide strength and leak-proof sealing. It has a low-profile hub and is slightly larger in diameter than the pipe, allowing for easy positioning before welding.
Key Features of Slip On Flanges
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Easy Alignment: Since it slides over the pipe, it allows for easy alignment of the bolt holes.
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Dual Welded: Fillet welds on both sides of the flange offer structural stability and prevent leakage.
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Cost-Effective: More economical than weld neck flanges, especially in low-pressure systems.
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Ideal for Low Pressure/Temperature: Commonly used in systems where stress and temperature are moderate.
Applications of Slip On Flanges
Slip on flanges are widely used in a variety of industries, including:
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Oil & Gas Pipelines
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Water and Wastewater Systems
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Chemical Processing
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Petrochemical Plants
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HVAC and Firefighting Systems
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Marine and Shipbuilding
Their versatility makes them suitable for low-pressure fluid transmission where welding and alignment need to be quick and efficient.
Slip On Flange Dimensions and Standards
Piyush Steel offers slip on flanges in sizes ranging from ½” to 48”, in classes such as 150, 300, 600, and higher, depending on your system requirements. Our flanges conform to international standards such as:
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ASME B16.5
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ANSI
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DIN
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EN 1092-1
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BS4504
They are available in materials like Stainless Steel, Carbon Steel, Alloy Steel, Duplex & Super Duplex, as well as exotic alloys for corrosive environments.
Why Choose Piyush Steel for Slip On Flanges?
With years of experience and a global client base, Piyush Steel ensures:
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High-quality raw materials
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Precision machining and heat treatment
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Third-party inspection and certifications
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On-time global delivery
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Competitive pricing
We provide custom manufacturing for large-scale infrastructure and industrial projects, backed by expert technical support.
Conclusion
A slip on flange is a reliable, easy-to-install, and economical flange solution, especially in low-pressure pipelines. Whether you’re dealing with water, gas, oil, or chemicals, these flanges provide a robust seal with the convenience of simple installation.
If you’re looking for premium-quality slip on flanges, trust Piyush Steel for exceptional performance, accuracy, and service.