Reliable Slip-On Flanges for Moderate Pressure & Low-Cost Installations
Vardhman Steel Overseas supplies top-grade Slip-On Flanges (SO Flanges), engineered for easy installation and secure performance in low-to-moderate pressure piping systems. These flanges are slid over the pipe and then fillet welded both inside and outside to provide a strong, leak-proof connection. Their simple design and low fabrication cost make them a preferred choice across diverse industries.
Slip-On Flanges are widely used in applications such as Water Treatment Plants, Cooling Systems, Pharmaceutical Processing, Food & Beverage Industries, General Engineering, and Firefighting Pipelines. They are particularly suited for systems where ease of alignment, quick installation, and structural simplicity are prioritized.
We manufacture Slip-On Flanges in full compliance with global standards like ASME B16.5, ASME B16.47 (Series A/B), EN 1092-1, DIN, ANSI, and BS. Available in pressure ratings from Class 150 to 1500 and sizes ranging from ½” NB to 48” NB, these flanges are offered in Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) face types.
Each Slip-On Flange undergoes comprehensive quality checks to ensure dimensional consistency, pressure tightness, and durability. We also provide mill test certificates and third-party inspections upon request from recognized bodies such as TUV, DNV, Lloyds, and Bureau Veritas.
Choose Vardhman Steel Overseas for precision-crafted Slip-On Flanges that offer cost-effective installation, reliable sealing, and efficient performance in a wide range of fluid handling systems.
Available Materials & Grades
Our Slip-On Flanges are available in a variety of high-performance materials and grades to meet specific industrial and project requirements.
| Material Type | Common Grades |
|---|---|
| Stainless Steel | 304, 304L, 316, 316L, 310S, 321, 347, 904L |
| Carbon Steel | A105, A350 LF2, A516 Gr.60/70 |
| Alloy Steel | A182 F1, F5, F9, F11, F22, F91 |
| Duplex Steel | UNS S31803, UNS S32205 |
| Super Duplex Steel | UNS S32750, UNS S32760 |
| Inconel | 600, 601, 625, 718 |
| Incoloy | 800, 800H, 800HT, 825 |
| Monel | 400, K500 |
| Hastelloy | C22, C276, B2 |
| Titanium | Grade 2, Grade 5 (Ti-6Al-4V) |
| Nickel Alloy | Nickel 200, Nickel 201 |
| Copper Alloys | Copper, Brass, Bronze, Cupro Nickel 90/10 & 70/30 |
Slip-On Flange – Technical Specifications
Explore the dimensional and performance specifications of our precision Slip-On Flanges manufactured by Vardhman Steel Overseas.
| Specification Parameter | Details |
|---|---|
| Product Name | Slip-On Flange (SO Flange) |
| Size Range | ½” NB to 48” NB |
| Pressure Ratings | Class 150, 300, 600, 900, 1500 |
| Facing Types | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF) |
| End Connection | Fillet Weld (Internal & External) |
| Manufacturing Method | Forged / Machined |
| Applicable Standards | ASME B16.5, ASME B16.47 Series A & B, EN 1092-1, DIN, ANSI, BS |
| Testing & Certification | Hydro Testing, PMI, UT, RT, MTC as per EN 10204 3.1 / 3.2, Third-Party Inspection (TPI) |
Features & Benefits
Slip-On Flanges from Vardhman Steel Overseas are designed for easy installation, excellent fitment, and reliable sealing in a variety of industrial piping systems. Discover the advantages that make them a practical choice for general-purpose applications.
- Cost-Effective Installation – Lower welding and fabrication costs make them ideal for non-critical service lines.
- Easy Pipe Alignment – Pipe slips into the flange before welding, ensuring accurate positioning and fitment.
- Internal & External Welding – Offers double-welded joint for enhanced leak protection under pressure.
- Low Profile Design – Compact dimensions reduce space usage and are suitable for tight installations.
- Versatile Connection – Suitable for low to moderate pressure systems across multiple industries.
- Multiple Facing Options – Available with RF, FF, and RTJ facings to suit different gasket and sealing requirements.
- Standardized Dimensions – Manufactured to global specifications for compatibility across system components.
- Enhanced Durability – Forged construction ensures strength and extended service life.
- Corrosion-Resistant Variants – Offered in a wide range of alloys for corrosive and marine environments.
- Used Across Key Industries – Trusted for general service in water lines, cooling systems, HVAC, and more.