Description
Product Detail
Hastelloy slip-on flanges are forged or plate-cut corrosion-resistant alloy flanges with a bore slightly larger than the pipe outside diameter, allowing the pipe to slide in before fillet welding. This flange type offers convenient installation, good alignment and cost-effective performance in low to medium pressure systems. It is widely used in chemical processing, flue gas desulfurization, marine piping, offshore platforms, acid transfer lines and other severe corrosion environments.
SASA FLANGE supplies Hastelloy slip-on flanges in standard and customized sizes to ASME B16.5, 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. Custom drilling, facing type and non-standard dimensions are available on request.
- ✓Product Name: Hastelloy Slip-On Flanges
- ✓Material Grade: Hastelloy C276, C22, B2
- ✓Product Type: Slip-On Flanges
- ✓Main Feature: Excellent resistance to pitting, crevice corrosion, oxidizing and reducing media
- ✓Applications: Chemical processing, offshore, marine, scrubbers, power plants, water treatment
Product Parameters
| Product Name | Hastelloy Slip-On Flanges |
| Material Grade | Hastelloy C276, Hastelloy C22, Hastelloy B2 / UNS N10276, UNS N06022, UNS N10665 |
| Material Type | Nickel-based corrosion-resistant alloy |
| Product Form | Forged, ring rolled, plate cut and machined |
| 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 | Natural machined, pickled, passivated, protected with anti-rust coating on machined faces 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 below is for reference for common Hastelloy flange grades. Actual composition depends on the selected alloy, melting practice and applicable material standard such as ASTM B564 or equivalent. Final values are confirmed by mill test certificate and project specification before delivery.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| Hastelloy C276 | 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 are typical room-temperature values for common Hastelloy grades used in flange manufacturing. Actual values may vary with alloy grade, forging route, heat treatment condition and section thickness. Certified test results are supplied according to the relevant material standard and EN 10204 3.1 documentation.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Hastelloy C276 | 690 MPa min | 283 MPa min | 40% min | 100 HB max typical | 8.89 g/cm3 |
| Hastelloy C22 | 690 MPa min | 310 MPa min | 45% min | 100 HB max typical | 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 / B2 | Stock / Production |
| DN350 – DN600 | Class 150 – 900 | RF / RTJ | Hastelloy C276 / C22 | Production |
| DN700 – DN1500 | Class 150 – 600 | RF | Hastelloy C276 | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| ASME Slip-On RF | Raised face slip-on flange for welding over pipe OD with fillet welds | General corrosive service pipelines and process lines |
| ASME Slip-On RTJ | Slip-on flange with ring type joint groove for higher integrity sealing | High-pressure chemical and offshore piping systems |
| EN 1092-1 Type 12 | European slip-on plate or hubbed flange configuration in PN ratings | Process plants and utility piping in European standard systems |
| JIS Slip-On | Slip-on flange manufactured to JIS drilling and dimensions | Marine, shipbuilding and equipment export projects to Japan or Asia |
Equivalent Standards and International Names
Hastelloy slip-on flanges can be manufactured to multiple international dimensional standards while using equivalent nickel alloy materials as specified by project requirements. Exact grade naming may differ by region, but UNS designation and chemical composition are the most reliable basis for material equivalency and procurement control.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | Hastelloy C276 / UNS N10276, C22 / UNS N06022 |
| Europe | EN 1092-1 | NiMo16Cr15W equivalent to UNS N10276 by material specification |
| Germany | DIN 2527 / 2566 | 2.4819 equivalent to Hastelloy C276 |
| Japan | JIS B2220 | Hastelloy C276 / C22 to customer alloy specification |
| China | GB/T 9119 | NS3304 / equivalent UNS N10276 by agreed material standard |
Production Process Flow
SASA FLANGE controls each production stage for Hastelloy slip-on flanges to maintain dimensional accuracy, alloy integrity and sealing performance. Process control is especially important for nickel alloy materials used in aggressive corrosion service.
- 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 specified heat treatment | 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 carried out to confirm the flange material matches the specified Hastelloy grade such as C276 or C22. Spectrometer or laboratory analysis verifies major alloying elements including nickel, chromium and molybdenum, as well as controlled limits for carbon, sulfur and phosphorus, ensuring compliance with the applicable material standard.
2. Mechanical Properties Testing
Mechanical testing verifies that the alloy flange meets required tensile strength, yield strength, elongation and hardness values after forging and heat treatment. These tests help confirm adequate mechanical integrity for pressure service, fabrication and welding performance, especially in critical industrial systems operating under corrosive and elevated-temperature conditions.
3. Dimensional Inspection
Dimensional inspection checks flange outside diameter, bore, thickness, bolt circle, bolt hole diameter, hole quantity, hub geometry and facing dimensions against the specified standard. Sealing face finish and flatness are also inspected to ensure reliable gasket seating, interchangeability and trouble-free installation in ASME, EN, DIN, JIS or GB piping systems.
4. PMI Testing and Hydrostatic Testing
PMI testing confirms the supplied flange is the correct nickel alloy grade before shipment and reduces the risk of material mix-up on site. When specified, hydrostatic or assembly pressure testing is performed on connected components. EN 10204 3.1 certificate, material test reports and traceability records are provided with the order.
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 used where ordinary stainless steel flanges cannot provide sufficient corrosion resistance. Their nickel-chromium-molybdenum alloy composition makes them suitable for aggressive media, chloride-bearing fluids, oxidizing and reducing chemicals, and demanding offshore or pollution control environments across multiple industrial sectors.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Produced water systems, sour service utility lines, offshore topside piping | Provides strong resistance to chlorides, wet corrosive media and severe plant environments |
| Chemical Processing | Acid transfer lines, reactors, scrubbers, chlorination and solvent systems | Excellent resistance to pitting, crevice corrosion and both oxidizing and reducing chemicals |
| Power Generation | FGD units, emission control piping, corrosion-critical auxiliary systems | Performs well in sulfur-bearing and acidic condensate service with long service life |
| Water Treatment | Desalination skids, chemical dosing lines, brine and seawater systems | High resistance to seawater corrosion and aggressive treatment chemicals |
| Marine and Offshore | Seawater cooling lines, platform piping, shipboard chemical systems | Nickel alloy construction improves durability in marine atmosphere and splash zones |
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 designed to slide over the pipe before welding on the inside and outside. It is commonly used in corrosive process systems where good chemical resistance is required along with easier alignment and more economical installation than weld neck flanges in suitable pressure classes.
Q: What materials are available for Hastelloy slip-on flanges?
A: SASA FLANGE can supply Hastelloy slip-on flanges in common grades including Hastelloy C276, Hastelloy C22 and Hastelloy B2, subject to project requirements. These alloys are selected based on corrosion conditions such as oxidizing acids, reducing media, chlorides, seawater or mixed chemical service. Other nickel alloy grades can be offered on request.
Q: What pressure class is supported?
A: Hastelloy slip-on flanges are commonly supplied in ASME Class 150, 300, 600, 900 and 1500, depending on size and standard. In European systems, PN10 to PN100 can be produced according to EN 1092-1 or DIN dimensions. Availability depends on alloy grade, flange size, facing type and project specification.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE can manufacture custom Hastelloy slip-on flanges based on drawings or project data sheets, including non-standard bore sizes, bolt drilling, facing types, thickness, special dimensions and matching material grades. We also support ASME, EN, DIN, JIS, GB and mixed-system replacement requirements for maintenance and OEM applications.
Q: What certificate is provided?
A: SASA FLANGE supplies EN 10204 3.1 material certificate together with mill test reports for chemical composition and mechanical properties. PMI reports, dimensional inspection records and other quality documents can also be provided. When specified in the order, hydrostatic or related pressure test documentation and full heat number traceability are included.
Contact Us
If you are looking for hastelloy 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
