Slip on Flange
Standards: ASME B16.5, ANSI B16.47, EN1092-1, JIS B2220, DIN 2576.
Pressure Classes: Class 150, 300, 600, 900, 1500, 2500; PN6 to PN160.
Materials: Carbon Steel (A105, A350 LF2), Stainless Steel (F304/304L, F316/316L), Alloy Steel.
Quality Guarantee for Large Projects:
We understand the requirements of terminal users in the Oil, Gas, and Power industries. Every Slip-On flange undergoes 100% visual and dimensional inspection.
Production Description
ASME B16.5 Slip-On (SO) Flanges
Carbon, Stainless, and Alloy Steel Manufacturing
Product Overview
Slip-on flanges, often referred to as SO flanges, are designed to slide over the end of the pipe and are subsequently welded both inside and outside to provide sufficient strength and prevent leakage. At RAYOUNG, we manufacture slip-on flanges with a hub (hubbed flanges) that conform to the highest industry standards, offering a cost-effective alternative to Weld Neck flanges for low-pressure applications.
- Standard: ASME B16.5, B16.47, MSS SP-44, DIN, EN1092-1
- Size Range: NPS 1/2″ to NPS 60″
- Pressure Class: 150, 300, 600, 900, 1500, 2500
- Facing Types: RF, FF, RTJ
- slip-on flange 2. outside fillet welds 3. inside fillet welds 4. pipe
Technical Specifications
| Category | Technical Details |
| Size Range | 1/2″ to 60″ (DN15 to DN1500) |
| Pressure Ratings | Class 150, 300, 600, 900, 1500; PN6 to PN100 |
| Common Materials | ASTM A105, A350 LF2, ASTM A182 F304/L, F316/L, F51, F11, F22;ASTM A182 |
| Face Types | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
| Surface Finish | Anti-rust Oil, Black Paint, Hot Dip Galvanized, Cold Galvanized |
| Compliance | ASME B16.5, B16.47 Series A/B, DIN 2576, EN 1092-1, JIS B2220 |
Why Choose Slip-On Flanges?
Key Benefits
- Lower Installation Cost vs Weld Neck Flange
- Easier alignment during fit-up
- Dual fillet welds for secure sealing
Application Limits
Generally not recommended for high-stress cyclic loading or extreme high-temperature environments.
Material Grades & Standards
| Category | Available Grades |
|---|---|
| Carbon Steel | ASTM A105 / A105N, A350 LF2, A694 F42-F70 |
| Stainless Steel | ASTM A182 F304/304L, F316/316L, F321, F347 |
| Alloy & Duplex | ASTM A182 F5, F11, F22 / F51, F53, F55 |
Class 150 Slip-On Dimensions (Reference)
more size dimensions, please contact us: info@hb-steel.com
| NPS | OD (D) | Bore (B) | Thickness (C) | Bolt Holes | Bolt Circle |
|---|---|---|---|---|---|
| 2″ | 6.00″ | 2.44″ | 0.75″ | 4 | 4.75″ |
| 4″ | 9.00″ | 4.57″ | 0.94″ | 8 | 7.50″ |
| 6″ | 11.00″ | 6.72″ | 1.00″ | 8 | 9.50″ |
FAQs
Q: How to ensure proper welding of a Slip-On Flange?
A: The pipe should be inserted with a setback equal to the pipe wall thickness plus 3mm. This ensures the internal fillet weld does not damage the flange face.
Q: Can Slip-On Flanges be used for RTJ connections?
A: Yes, they can be machined for RTJ in Class 300+, though Weld Neck flanges are technically preferred for structural integrity in these scenarios.
Q: When should I use a slip-on flange?
A: These flanges are not designed to handle high-pressure or high-temperature systems, so they are ideal for standard applications where pressure is not a concern.
When budget is a critical factor, and the application does not require the strength and durability of more expensive flanges, slip-on flanges are a cost-effective option.
Our Advantage
Cooperate with Rayoung, you will enjoy the following benefits.
Rayoung–A leading Butt Weld pipe fittings, flanges and steel pipes supplier& factory in China.
We’re here to help with your industry pipe fittings and flange needs. Rayoung has been in the business of industrial pipe fittings since 1983, and we’re confident we can help you find a solution more quickly, affordably, and with greater expertise than the competition.
We’d love to learn more about your project today!
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