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Slip On Flange

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Slip-On Flanges Manufacturer in India

What is a Slip-On Flange?


A Slip-On Flange (SO Flange) is a type of pipe flange that is slipped over the pipe and welded in place to create a strong and secure connection. These flanges are widely used in low-pressure applications due to their easy installation, cost-effectiveness, and versatility.

Slip-on flanges are commonly manufactured using stainless steel grades such as SS 304, SS 316, SS 321, SS 347, SS 310, and SS 904L, ensuring excellent corrosion resistance and durability in various industrial environments.



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Why Choose Slip-On Flanges?

  • Easy Installation & Cost-Effective – Slip-on flanges require less welding compared to other flange types, making them easy to install and cost-efficient for various piping systems.
  • Leak-Proof Connection – The double weld design (inside & outside) enhances the leak-proof integrity, making them ideal for fluid and gas pipelines.
  • Corrosion & Oxidation Resistance – Manufactured from high-quality stainless steel, slip-on flanges offer excellent resistance to rust, oxidation, and chemical exposure.
  • Versatile & Compatible – Suitable for a wide range of applications, including oil & gas, petrochemical, water treatment, and HVAC systems.
  • Available in Multiple Pressure Ratings – Slip-on flanges come in 150#, 300#, 600#, 900#, 1500#, and 2500# ratings, making them suitable for different pressure and temperature requirements.

Slip-On Flanges Manufacturer in India

As a trusted Slip-On Flanges Manufacturer in India, we provide:

  • High-quality SS Slip-On Flanges in various sizes & pressure ratings.
  • Customization options to meet industry-specific needs.
  • Third-party testing & certifications for quality assurance.
  • Global export and on-time delivery for bulk orders.

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Applications of Slip-On Flanges

These flanges are widely used in industries requiring reliable and economical flange connections, including:

  • Oil & Gas Pipelines – Used in low-pressure flow lines.
  • Chemical Processing Plants – Resistant to corrosive chemicals.
  • Water Supply & Treatment Plants – Ideal for potable water and wastewater management.
  • HVAC & Fire Protection Systems – Common in industrial and commercial HVAC systems.
  • Food & Beverage Industry – Ensures hygienic processing in food-grade applications.

Key Features of Slip-On Flanges

  • Lightweight & Easy to Weld – Simple to install, reducing labor costs.
  • Smooth Fluid Flow – Minimizes turbulence and ensures efficient flow.
  • Durable & Long-Lasting – Resistant to wear, corrosion, and chemical exposure.
  • Versatile Design – Compatible with various pipe materials and industrial systems.
  • Compliant with ASTM, ASME, and ANSI standards.

Specifications of Slip-On Flanges

Specification Details
Material Grade Stainless Steel 304, 316, 321, 347, 310, 904L
Standard ASTM A182 / ASME SA182
Size Range ½” to 48” (DN15 to DN1200)
Pressure Ratings 150#, 300#, 600#, 900#, 1500#, 2500#
Face Type RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)
Connection Type Slip-On (Inside & Outside Weld)
Temperature Resistance Suitable for moderate-temperature applications
Corrosion Resistance High resistance to oxidation, pitting, and chemical exposure

Chemical Composition of Slip-On Flanges

Element Composition (%)
Carbon (C) 0.08 max (varies by grade)
Manganese (Mn) 2.00 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.030 max
Silicon (Si) 1.00 max
Chromium (Cr) 16.0 – 21.0
Nickel (Ni) 8.0 – 28.0
Molybdenum (Mo) 2.00 – 5.00 (varies by grade)
Copper (Cu) 1.0 – 2.0 (in 904L)

Mechanical Properties of Slip-On Flanges

Property Value
Tensile Strength 485 – 590 MPa (varies by grade)
Yield Strength 170 – 300 MPa
Elongation 30 – 40%
Hardness (Brinell) 217 max
Hardness (Rockwell B) 95 max

Stainless Steel Slip-On Flanges Export Destinations

Region Countries
Middle East UAE, Saudi Arabia, Qatar, Oman, Kuwait, Turkey
Asia India, Singapore, Malaysia, Thailand, Vietnam, South Korea, Japan
South America Argentina, Brazil, Chile, Colombia, Venezuela
North America USA, Canada, Mexico, Panama
Europe UK, Germany, France, Italy, Spain, Netherlands, Russia
Africa Nigeria, South Africa, Egypt, Algeria

Stainless Steel Slip-On Flanges Supply in Indian States & Cities

State Major Cities
Maharashtra Mumbai, Pune, Nashik, Nagpur
Gujarat Ahmedabad, Surat, Vadodara
Tamil Nadu Chennai
Telangana Hyderabad
Karnataka Bengaluru
West Bengal Kolkata
Uttar Pradesh Kanpur, Noida
Andhra Pradesh Vishakhapatnam, Vijayawada
Union Territories Delhi, Chandigarh

Buy High-Quality Stainless Steel Slip-On Flanges in India

Looking for top-quality SS Slip-On Flanges? We offer a wide range of SO flanges with certified quality, corrosion resistance, and durability. Contact us today for competitive pricing and bulk orders!

Frequently Asked Questions - Slip-On-Flanges

1. Why are Slip-On Flanges preferred over Weld Neck Flanges?
Slip-On Flanges are more cost-effective and easier to install compared to Weld Neck Flanges. They require less welding, making them ideal for low-pressure applications where high strength is not a primary concern.
+ 2. What are the key advantages of using Stainless Steel Slip-On Flanges?
Key benefits include:
  • Lower installation cost due to simpler welding
  • Easy alignment with pipes before welding
  • Suitable for low- to medium-pressure applications
  • Available in various sizes for versatile applications
  • Good corrosion resistance when made from stainless steel
+ 3. What industries commonly use Stainless Steel Slip-On Flanges?
  • Oil & Gas pipelines
  • Water treatment plants
  • Food & Beverage processing
  • Petrochemical & chemical industries
  • HVAC systems and fire protection piping
+ 4. What are the differences between Slip-On Flanges and Socket Weld Flanges?
  • Slip-On Flanges allow the pipe to slide through before welding, making them easier to install, while Socket Weld Flanges have a recessed socket for the pipe, providing better strength and reduced leakage risk. Slip-On Flanges are used in low-pressure applications, whereas Socket Weld Flanges are preferred for high-pressure systems.
+ 5. What are the common stainless steel grades used for Slip-On Flanges?
  • SS 304 / 304L – General-purpose corrosion resistance
  • SS 316 / 316L – Enhanced resistance to chloride environments
  • SS 321 – Good high-temperature resistance
  • SS 904L – Excellent corrosion resistance in acidic conditions
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