Description
Product Detail
Hastelloy slip on flanges are bored slightly larger than the pipe outside diameter so the flange slips over the pipe and is fillet welded at the top and bottom. This design provides easy alignment, economical installation, and reliable performance in low to medium pressure systems handling corrosive fluids. Hastelloy alloys are selected where excellent resistance to oxidizing media, chlorides, acids, and wet corrosion is required.
SASA FLANGE supplies Hastelloy slip on flanges in standard and custom dimensions according to ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS, and GB requirements. Each batch can be supported by chemical analysis, mechanical testing, dimensional inspection, PMI testing, EN 10204 3.1 certificate, and full heat number traceability to meet critical project and end-user specifications.
- ✓Product Name: Hastelloy Slip On Flanges
- ✓Material Grade: Hastelloy C276, C22, B2, B3
- ✓Product Type: Nickel Alloy Slip-On Pipe Flange
- ✓Main Feature: Excellent corrosion resistance with easy installation and accurate pipe alignment
- ✓Applications: Chemical processing, offshore, pulp and paper, flue gas desulfurization, power, marine, and acid handling systems
Product Parameters
| Product Name | Hastelloy Slip On Flanges |
| Material Grade | Hastelloy C276, Hastelloy C22, Hastelloy B2, Hastelloy B3 |
| Material Type | Corrosion-resistant nickel-molybdenum-chromium alloy |
| Product Form | Slip-On Flange, machined from forged billet, rolled ring, or plate depending on size and standard |
| Size Range | DN15 – DN1500 (1/2 inch – 60 inch) |
| Pressure Class | Class 150 – 2500 / PN6 – PN100 |
| Sealing Face | RF, FF, RTJ, TG, MFM |
| Surface Treatment | Natural machined, pickled, passivated, protective oil coating |
| Standard | ASME B16.5, ASME B16.47 Series A/B, 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
The following chemical composition is a typical reference for Hastelloy C276 used in corrosive service flange applications. Final chemistry shall comply with the applicable ASTM/ASME material standard, purchase specification, and mill test certificate. Exact values may vary slightly by heat and approved manufacturing route.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| Hastelloy C276 Content % | 0.01 max | 0.08 max | 1.00 max | 0.04 max | 0.03 max | 14.5-16.5 | Balance | 15.0-17.0 | Fe 4.0-7.0, W 3.0-4.5, Co 2.5 max, V 0.35 max |
Mechanical Properties
Mechanical properties shown below are typical minimum room-temperature values for common Hastelloy grades used for flange manufacturing. Actual values may vary depending on grade, heat treatment condition, section thickness, and raw material form. Final properties are subject to the governing material standard and certified test report.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Hastelloy C276 | 690 MPa min | 283 MPa min | 40% min | 100HRB max | 8.89 g/cm3 |
| Hastelloy C22 | 690 MPa min | 310 MPa min | 45% min | 95HRB max | 8.69 g/cm3 |
Common Size Table
| Size Range | Pressure Class | Sealing Face | Material | Availability |
|---|---|---|---|---|
| DN15 – DN50 | Class 150 – 600 | RF | Hastelloy C276 / C22 | Stock / Production |
| DN65 – DN300 | Class 150 – 1500 | RF / RTJ | Hastelloy C276 / C22 / B3 | Stock / Production |
| DN350 – DN600 | Class 150 – 2500 | RF / RTJ | Hastelloy C276 / C22 | Production |
| DN700 – DN1500 | Class 150 – 900 | RF | Hastelloy C276 | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| Slip-On RF | Raised face slip-on flange for standard gasket seating and easy field assembly | General chemical lines, water treatment skids, utility piping |
| Slip-On FF | Flat face slip-on flange designed for full-face gasket contact | Low pressure systems, lined piping, cast iron or FRP mating flanges |
| Slip-On RTJ | Ring type joint slip-on flange with machined groove for metal ring gasket sealing | Higher pressure corrosive service, refinery and offshore systems |
| Custom Drilled Slip-On | Special bore, bolt pattern, or thickness according to project drawing | Plant retrofit, OEM equipment, non-standard international projects |
Equivalent Standards and International Names
Hastelloy slip on flanges can be manufactured to major international flange dimensions while the material grade is supplied according to recognized nickel alloy standards such as ASTM B564, ASTM B366, or ASME SB specifications. Equivalent regional names may differ, so project documents and MTC confirmation are important before ordering.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | Hastelloy C276 / UNS N10276 |
| Europe | EN 1092-1 | Alloy C276 / 2.4819 equivalent project designation |
| Germany | DIN 2527 / 2566 | Werkstoff 2.4819 / Alloy C276 |
| Japan | JIS B2220 | Hastelloy C276 equivalent nickel alloy on project request |
| China | GB/T 9119 | NS3304 / UNS N10276 equivalent on project request |
Production Process Flow
SASA FLANGE controls each manufacturing stage for Hastelloy slip on flanges to ensure corrosion resistance, dimensional accuracy, and reliable weldability. Production route is selected according to size, pressure class, alloy grade, and end-use specification.
- 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 approved annealing process | 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 inspection is performed to verify the Hastelloy alloy matches the required grade such as C276 or C22. Laboratory analysis checks key elements including nickel, chromium, molybdenum, iron, tungsten, and carbon. This ensures compliance with the applicable material standard and helps guarantee corrosion resistance in aggressive process environments.
2. Mechanical Properties Testing
Mechanical testing confirms that the flange material meets specified tensile strength, yield strength, elongation, and hardness requirements. Testing is carried out on representative samples from the heat or production batch. These results help verify the flange can withstand assembly loads, service stress, and fabrication requirements without sacrificing alloy performance.
3. Dimensional Inspection
Dimensional inspection covers outside diameter, bore size, thickness, hub-free slip-on geometry, bolt hole quantity, bolt circle, and facing details. The sealing face finish and concentricity are also checked according to ASME, EN, DIN, JIS, or GB standards. Accurate dimensions ensure proper fit-up, gasket sealing, and trouble-free installation at site.
4. PMI Testing and Hydrostatic Testing
Positive Material Identification is used to confirm the supplied flange is the correct nickel alloy grade before shipment. When required by project specification, hydrostatic pressure testing is coordinated at assembly or system level to confirm sealing integrity. SASA FLANGE can provide EN 10204 3.1 certificate, inspection records, marking details, and traceable test documentation.
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
Hastelloy slip on flanges are widely used where conventional stainless steel cannot provide sufficient resistance to pitting, crevice corrosion, oxidizing acids, chlorides, or reducing media. Their combination of corrosion resistance and installation convenience makes them suitable for demanding piping systems across multiple industrial sectors.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Sour service units, produced water systems, offshore skid piping, chemical injection lines | Excellent resistance to chloride attack, corrosion, and aggressive process chemicals |
| Chemical Processing | Acid transfer lines, reactor piping, scrubbers, bleaching systems, chlorination service | Hastelloy performs well in mixed acids, oxidizing media, and severe corrosion environments |
| Power Generation | FGD systems, condensate treatment, emission control piping, specialty chemical dosing lines | Strong resistance to wet corrosion and flue gas desulfurization media |
| Water Treatment | Seawater systems, brine treatment, desalination equipment, chemical dosing manifolds | High resistance to chloride-rich fluids and improved service life versus standard alloys |
| Marine and Offshore | Offshore platforms, seawater cooling lines, deck process modules, corrosive utility piping | Reliable corrosion resistance in saline atmospheres and splash-zone related process 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 Hastelloy slip on flange?
A: A Hastelloy slip on flange is a nickel alloy flange with a bore slightly larger than the pipe outside diameter, allowing it to slide over the pipe before welding. It is typically fillet welded on both sides. This flange type is preferred for easier alignment, economical installation, and corrosion-resistant service in chemical, marine, and process industries.
Q: What materials are available for Hastelloy slip on flanges?
A: SASA FLANGE supplies Hastelloy slip on flanges in common grades including Hastelloy C276, C22, B2, and B3, depending on service conditions and customer specification. C276 is the most widely used for broad corrosion resistance. C22 offers excellent resistance in oxidizing environments, while B2 and B3 are selected for reducing acid services.
Q: What pressure class is supported?
A: Hastelloy slip on flanges can be supplied in ASME Class 150, 300, 600, 900, 1500, and 2500, as well as EN and DIN pressure ratings such as PN6, PN10, PN16, PN25, PN40, PN63, and PN100. Available class depends on flange size, standard, material form, and whether the design is standard or custom made.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE can manufacture custom Hastelloy slip on flanges according to drawings or project standards. We support special bore dimensions, non-standard drilling patterns, custom thickness, special facing such as RF or RTJ, and project-specific alloy grades. This service is suitable for retrofit work, OEM equipment, and mixed-standard international piping systems.
Q: What certificate is provided?
A: SASA FLANGE can provide EN 10204 3.1 material certificate together with MTC, heat number traceability, dimensional inspection records, and PMI test results. Mechanical testing and chemical analysis reports are available according to order requirements. For critical applications, additional third-party inspection and project-specific documentation can also be arranged before shipment.
Contact Us
If you are looking for hastelloy slip on flanges 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
