Slip-On Flanges
What are Slip-On Flanges?
Slip-On Flanges are flat, round discs that are slipped over the end of a pipe and then welded in place from both inside and outside, offering enhanced strength and leak resistance. These flanges are widely used in low-pressure, non-critical systems where quick assembly and alignment are essential.
Asiad Steel Industries is a leading manufacturer and exporter of high-quality Slip-On Flanges designed for durability and reliability in a wide range of industrial applications.
Key Features
Strong &
Reliable Connection
Durable
Construction
Easy Installation
& Removal
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Pipe Size (NPS) | ½” to 48” (DN15 – DN1200) |
| Pressure Ratings | ANSI / ASME Class | Class 150, 300, 600, 900, 1500, 2500 |
| PN Ratings | PN6, PN10, PN16, PN25, PN40, PN64 | |
| Flange Types | Slip On Flanges | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Special Types | Large Diameter Slip On Flanges, Orifice Slip On Flanges | |
| Material Options | Stainless Steel | SS 304, SS 304L, SS 316, SS 316L, SS 321, SS 347 |
| Carbon Steel | ASTM A105, ASTM A350 LF2 | |
| Alloy / Superalloy | Alloy Steel (A182 F1, F5, F9, F11, F22, F91), Inconel 600/625/825 | |
| Duplex & Super Duplex | Duplex 2205, Super Duplex 2507 | |
| Other Materials | Monel 400/K500, Nickel 200/201, Titanium (Grade 2, Grade 5), Hastelloy C22/C276 | |
| Standards & Certifications | ASME / ANSI | ASME B16.5, ASME B16.47 Series A & B |
| ASTM | ASTM A182, ASTM A350 | |
| European Standards | EN 1092-1, DIN 2576, DIN 2632, DIN 2633 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175, IBR Approved | |
| Design Features | Bore Design | Machined to match pipe ID for proper flow |
| Face Type | RF, FF, RTJ | |
| Welding Ends | Suitable for fillet welding (inside & outside) | |
| Thickness | As per ASME B16.5 & EN 1092-1 | |
| Tolerance | As per ASME/ANSI standards | |
| Coating & Surface Finish | Anti-Corrosion Coating | Rust Preventive Oil, Black Oxide, Hot-Dip Galvanized |
| Optional Coatings | Epoxy, PTFE, Polyurethane | |
| Surface Finish | Smooth Finish, Serrated Finish, Polished | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Ultrasonic (UT), Radiography (RT), Magnetic Particle (MPI), Dye Penetrant (DPT) | |
| Destructive Testing | Tensile, Hardness, Impact |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 485 – 750 | MPa (Carbon Steel, Stainless Steel, Alloy Steel) |
| Yield Strength | 170 – 450 | MPa |
| Hardness | 120 – 200 | HB (Brinell) |
| Elongation | ≥ 20 – 30 | % |
| Density | 7.8 – 8.0 | g/cm³ |
| Impact Toughness | ≥ 27 – 70 | J (Charpy, grade-dependent) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Fatigue Strength | 200 – 400 | MPa |
| Corrosion Resistance | Good to Excellent (SS > CS > Alloy Steel) | – |
| Thermal Conductivity | 15 – 50 | W/m·K |
| Coefficient of Thermal Expansion | 11 – 17 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.40 – 0.65 | – |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Brinell Hardness Range | 120 – 200 | HB |
| Surface Finish | Serrated / Stock / Smooth finish per ASME B16.5 | – |
| Welding Type | Double fillet weld (inside & outside) | – |
| Operating Temperature Range | -46 to 600 | °C (depends on material grade) |
| Pressure Rating | Class 150, 300, 600, 900, 1500 | ASME B16.5 Standards |
Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon | 0.08 – 0.30 |
| Manganese | 0.50 – 1.50 |
| Silicon | 0.15 – 0.75 |
| Chromium | 17.0 – 20.0 (SS) |
| Nickel | 8.0 – 12.0 (SS) |
| Molybdenum | 2.0 – 3.0 (for 316) |
| Sulfur | ≤ 0.030 |
| Phosphorus | ≤ 0.040 |
| Iron | Balance |
Applications of Slip- On Flanges
Construction &
Infrastructure
Power Generation &
Energy Sector
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
Where are slip-on flanges commonly used?
Are slip-on flanges suitable for high-pressure applications?
Can slip-on flanges be customized?
Can slip-on flanges be customized?
