Description
Product Detail
Slip on flange Incoloy is a forged or machined flange that slides over the pipe and is fillet welded at the inside and outside to provide reliable alignment and economical installation. Incoloy slip-on flanges offer excellent resistance to oxidation, chloride-containing media, sulfuric and phosphoric acids, and high-temperature service, making them suitable for chemical processing, offshore systems, flue gas desulfurization, heat exchangers, and power plants.
SASA FLANGE supplies Incoloy slip-on flanges in standard and non-standard dimensions with customized drilling, facing, and pressure ratings. Each batch can be supplied with chemical analysis, mechanical testing, dimensional inspection, PMI verification, EN 10204 3.1 certificate, and full heat number traceability to meet international project and end-user documentation requirements.
- ✓Product Name: Incoloy Slip-On Flange
- ✓Material Grade: Incoloy 800, 800H, 800HT, 825; Alloy 625 on request
- ✓Product Type: Nickel-Iron-Chromium Alloy Slip-On Flange
- ✓Main Feature: Excellent corrosion resistance, oxidation resistance, and stable performance at elevated temperature
- ✓Applications: Oil and gas, chemical processing, offshore, power generation, marine, and water treatment
Product Parameters
| Product Name | Slip On Flange Incoloy |
| Material Grade | ASTM B564 UNS N08800, N08810, N08811, N08825; UNS N06625 on request |
| Material Type | Nickel-Iron-Chromium Alloy / Nickel Alloy |
| Product Form | Forged and machined slip-on flange |
| Size Range | DN15 – DN1500 (1/2 inch – 60 inch) |
| Pressure Class | Class 150 – 1500 / PN10 – PN100 |
| Sealing Face | RF, FF, RTJ, TG, MFM |
| Surface Treatment | Pickling, passivation, machined finish, protective oil coating for shipment |
| Standard | ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS B2220, GB/T 9119 or customer specification |
| Inspection | Chemical Analysis, Mechanical Test, PMI Test, Dimensional, Hydrostatic |
| Certificate | EN 10204 3.1 Material Certificate available |
| Processing Service | Cutting, CNC Machining, Custom Drilling, Custom Size Processing |
Chemical Composition
Typical chemical composition for Incoloy slip-on flange materials is shown for reference only. Actual composition depends on the selected grade such as UNS N08825 or N08800 and shall conform to the relevant ASTM material specification, project requirements, and the values stated in the final mill test certificate.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| UNS N08825 (%) | 0.05 max | 0.50 max | 1.00 max | 0.03 max | 0.03 max | 19.5-23.5 | 38.0-46.0 | 2.5-3.5 | Cu 1.5-3.0, Ti 0.6-1.2, Fe balance |
Mechanical Properties
Mechanical properties of Incoloy slip-on flange materials vary according to alloy grade, solution annealed condition, product thickness, and applicable ASTM specification. The values below are typical reference values for commonly used forging grades and should be verified against the certified material test report for each supplied lot.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Incoloy 800 / UNS N08800 | 500 MPa min | 205 MPa min | 30% min | 200HB max | 7.94 g/cm3 |
| Incoloy 825 / UNS N08825 | 550 MPa min | 220 MPa min | 30% min | 200HB max | 8.14 g/cm3 |
Common Size Table
| Size Range | Pressure Class | Sealing Face | Material | Availability |
|---|---|---|---|---|
| DN15 – DN50 | Class 150 – 600 | RF | Incoloy 800 / 825 | Stock / Production |
| DN65 – DN300 | Class 150 – 900 | RF / RTJ | Incoloy 800H / 825 | Stock / Production |
| DN350 – DN600 | Class 150 – 1500 | RF / RTJ | Incoloy 825 | Production |
| DN700 – DN1500 | Class 150 – 600 | RF | Incoloy 800 / 825 | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| Slip-On RF | Raised face slip-on flange for general piping service with easy alignment and welding | Chemical lines, water systems, utility piping |
| Slip-On FF | Flat face slip-on flange used where full face gasket contact is required | Low-pressure water treatment and tank connections |
| Slip-On RTJ | Ring type joint slip-on flange for higher pressure and improved sealing performance | Process lines, offshore and hydrocarbon service |
| Custom Drilled Slip-On | Special bolt pattern, thickness, or facing manufactured to drawing | Plant retrofit, OEM equipment, non-standard piping systems |
Equivalent Standards and International Names
Slip-on flange dimensions are produced to international flange standards, while the alloy grade is selected to equivalent nickel alloy material specifications accepted by each region. Exact naming may differ between standards, so final supply is based on dimensional standard, material grade, and project documentation approved by the customer.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | ASTM B564 UNS N08800, N08810, N08811, N08825 |
| Europe | EN 1092-1 | Alloy 800HT / 825 equivalent nickel alloy materials to EN project requirement |
| Germany | DIN 2527 / 2566 | 2.4858 / 2.4856 equivalent alloy designations by project specification |
| Japan | JIS B2220 | Incoloy 800 / 825 equivalent nickel alloy materials on request |
| China | GB/T 9119 | NS1101 / NS1402 equivalent nickel alloy grades per project requirement |
Production Process Flow
SASA FLANGE controls each production stage for Incoloy slip-on flanges to ensure alloy integrity, dimensional precision, and sealing performance for demanding corrosion and high-temperature applications.
- 1. Raw Material Selection
- 2. Forging / Cutting
- 3. Heat Treatment
- 4. Rough Machining
- 5. Finish Machining
- 6. Drilling
- 7. Surface Treatment
- 8. Inspection
- 9. Marking
- 10. Packing
- 11. Delivery
| Process Step | Description | Quality Control Point |
|---|---|---|
| Raw Material | Select certified forging billets or plates | Material certificate and traceability |
| Forging | Hot forging to achieve required shape | Forging temperature and reduction ratio |
| Heat Treatment | Solution annealing or stabilizing as required by alloy grade | Temperature and holding time control |
| Machining | Sealing face, bolt holes, dimensions | Dimensional accuracy and surface finish |
| Inspection | Final inspection before shipment | Dimension, surface, PMI, hydrostatic |
Product Inspection
1. Chemical Composition Inspection
Chemical composition testing is carried out to confirm the supplied Incoloy grade meets the applicable ASTM specification. Key alloying elements such as nickel, chromium, molybdenum, copper, and titanium are verified by spectrometer analysis. This helps ensure corrosion resistance, high-temperature stability, and consistency with project material requirements before machining or final dispatch.
2. Mechanical Properties Testing
Mechanical testing is performed according to relevant material standards to verify tensile strength, yield strength, elongation, and hardness. These tests confirm that the Incoloy flange material has the required strength and ductility for installation and service. Test values may be taken from the original forging lot or additional test specimens depending on customer specification.
3. Dimensional Inspection
Each slip-on flange is checked for outside diameter, bore size, thickness, bolt circle, bolt hole quantity, hole diameter, and facing dimensions. Sealing face finish and concentricity are also inspected to ensure correct assembly with mating flanges. Dimensional control is carried out in accordance with ASME, EN, DIN, JIS, GB, or approved customer drawings.
4. PMI Testing and Hydrostatic Testing
Positive Material Identification is available to verify the nickel alloy grade of every flange or selected batch using handheld XRF equipment. Hydrostatic testing can be arranged where required by project scope or assembly conditions. SASA FLANGE supplies EN 10204 3.1 certification, inspection records, and traceable heat numbers for full documentation support.
Product Packaging
- ✓Wooden Case Packaging: Suitable for high-pressure and large-diameter products
- ✓Pallet Packing with Shrink Wrap: Suitable for batch shipments and standard sizes
- ✓Anti-rust Oil Coating + Waterproof Paper: Used for ocean freight protection
- ✓Individual Plastic Bag + Carton: Used for small fittings and threaded products
- ✓Clear Marking: Grade, size, pressure class, heat number and PO number
Applications
Incoloy slip-on flanges are selected for corrosive and elevated-temperature piping systems where reliable installation, alloy stability, and resistance to aggressive media are required. They are widely used in industries handling acids, chlorides, seawater, hot gases, and process fluids that exceed the capability of carbon steel or standard stainless steel flanges.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Produced water systems, offshore piping, sour service auxiliary lines | Provides corrosion resistance in chloride-bearing and aggressive process environments |
| Chemical Processing | Acid transfer lines, fertilizer plants, phosphoric and sulfuric acid service | Incoloy alloys resist pitting, crevice corrosion, and chemical attack |
| Power Generation | Boiler auxiliary systems, FGD units, heat exchanger connections | Maintains strength and oxidation resistance at elevated temperatures |
| Water Treatment | Desalination skids, brine lines, chemical dosing systems | Suitable for seawater, brine, and corrosive treatment chemicals |
| Marine and Offshore | Seawater cooling, offshore modules, deck piping systems | Good resistance to marine atmosphere and chloride-rich service |
Why Choose SASA FLANGE?
- ✓Professional manufacturer of Slip-On Flanges for global industrial projects
- ✓Customized size, pressure class and material grade according to drawings
- ✓Full standard support: ASME, EN, DIN, JIS, GB, GOST and customer specifications
- ✓Material traceability with heat number control and EN 10204 3.1 material certificate
- ✓Chemical analysis, mechanical testing, PMI testing, hydrostatic and dimensional inspection
- ✓Stock availability for standard items, lead time 3-7 days; custom production 15-30 days
- ✓Export-grade packaging for sea, air and land transportation
- ✓15+ years experience supplying 50+ countries worldwide
FAQ
Q: What is a slip on flange incoloy?
A: A slip on flange incoloy is a nickel alloy flange designed to slide over the outside diameter of a pipe before fillet welding at both sides. It combines easier alignment and installation with the corrosion resistance and high-temperature performance of Incoloy alloys, making it suitable for chemical, offshore, marine, and power plant piping systems.
Q: What materials are available for slip on flange incoloy?
A: Common materials include Incoloy 800, 800H, 800HT, and 825 manufactured to ASTM B564 or equivalent project specifications. For some applications, SASA FLANGE can also supply similar nickel alloy slip-on flanges such as Alloy 625 upon request. Material selection depends on temperature, corrosion medium, pressure rating, and end-user technical requirements.
Q: What pressure class is supported?
A: SASA FLANGE commonly supplies Incoloy slip-on flanges in ASME Class 150, 300, 600, 900, and 1500, as well as PN10 to PN100 depending on dimensional standard and size. Slip-on design is generally used in low to medium and selected high-pressure services where welding configuration, corrosion allowance, and operating conditions are properly evaluated.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE can produce custom Incoloy slip-on flanges according to customer drawings or project standards. Customized options include non-standard bore size, bolt hole drilling, facing type, thickness, outside diameter, special marking, and alloy grade selection. This is useful for plant maintenance, OEM equipment, offshore skids, and replacement parts requiring exact interchangeability.
Q: What certificate is provided?
A: SASA FLANGE can provide EN 10204 3.1 material certificate together with mill test reports covering chemical composition and mechanical properties. PMI reports, dimensional inspection records, and other requested QA documents can also be supplied. Hydrostatic testing or additional NDT-related documentation can be arranged according to purchase order requirements and project specifications.
Contact Us
If you are looking for slip on flange incoloy or related custom flange products, please contact SASA FLANGE with your required size, pressure class, material grade, standard, surface treatment, quantity and inspection requirements. Our team will provide professional technical solutions and competitive quotation within 24 hours.
- 📧 Email: sales@sasaflange.com
- 📱 WhatsApp: +86 13764965049
- ☎️ Tel: +86 21 52236361
- 🌐 Website: www.sasaflange.com
