Description
Product Detail
Alloy 330 slip on flange is a bored flange that slides over the pipe and is fillet welded inside and outside to provide dependable alignment and leak-tight performance. Manufactured from heat-resistant nickel-iron-chromium alloy 330, it offers strong resistance to oxidation, thermal shock and carburizing atmospheres, making it suitable for furnace piping, high-temperature gas lines, chemical processing and power plant systems.
SASA FLANGE supplies alloy 330 slip on flanges in standard and customized dimensions to ASME, EN, DIN, JIS and GB requirements. Each order can be supported with chemical analysis, mechanical testing, dimensional inspection, PMI testing, EN 10204 3.1 certificate and full heat number traceability to meet project quality and documentation requirements.
- ✓Product Name: Alloy 330 Slip On Flange
- ✓Material Grade: UNS N08330 / Alloy 330
- ✓Product Type: Slip-On Flange
- ✓Main Feature: Excellent oxidation, carburization and thermal shock resistance at elevated temperature
- ✓Applications: Heat treatment furnaces, petrochemical units, power plants, exhaust systems and high-temperature process piping
Product Parameters
| Product Name | Alloy 330 Slip On Flange |
| Material Grade | UNS N08330 / Alloy 330 |
| Material Type | Nickel-Iron-Chromium Heat Resistant Alloy |
| Product Form | Forged and machined flange or cut and machined plate flange subject to size and project requirement |
| Size Range | DN15 – DN1500 (1/2 inch – 60 inch) |
| Pressure Class | Class 150 – 1500 / PN10 – PN100 / JIS 5K – 40K |
| Sealing Face | RF, FF, RTJ, TG, MFM |
| Surface Treatment | Machined, Pickled, Passivated, Protective packing for export 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
The following chemical composition is for reference for Alloy 330 material used in slip on flange production. Actual composition may vary slightly by mill source, product form and applicable supply specification. Final chemistry shall comply with the relevant material standard and the issued mill test certificate for each heat number.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| Content % | 0.08 max | 1.50 max | 2.00 max | 0.030 max | 0.030 max | 17.0 – 20.0 | 34.0 – 37.0 | 0.75 max | Fe balance, Cu 1.00 max |
Mechanical Properties
Mechanical properties of Alloy 330 flanges depend on raw material form, solution annealing condition, section thickness and final machining condition. The values below are typical reference figures for alloy 330 material used in flange manufacturing. Project specifications or customer standards may require additional testing and acceptance criteria before shipment.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Alloy 330 Annealed | 585 MPa min | 240 MPa min | 30% min | 200HB max | 7.94 g/cm3 |
| Alloy 330 Typical Mill Condition | 620 MPa | 260 MPa | 35% min | 170 – 210HB | 7.94 g/cm3 |
Common Size Table
| Size Range | Pressure Class | Sealing Face | Material | Availability |
|---|---|---|---|---|
| DN15 – DN50 | Class 150 – 600 | RF | UNS N08330 / Alloy 330 | Stock / Production |
| DN65 – DN300 | Class 150 – 1500 | RF / RTJ | UNS N08330 / Alloy 330 | Stock / Production |
| DN350 – DN600 | Class 150 – 900 | RF / RTJ | UNS N08330 / Alloy 330 | Production |
| DN700 – DN1500 | Class 150 – 600 | RF | UNS N08330 / Alloy 330 | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| Slip-On RF | Slip-on flange with raised face, easy pipe alignment and double fillet weld connection | General process piping, furnace auxiliaries and utility lines |
| Slip-On FF | Flat face slip-on flange for low pressure systems and mating with flat face equipment flanges | Water, low pressure service and lined equipment connections |
| Slip-On RTJ | Slip-on flange machined with ring type joint groove for improved sealing under higher pressure | Refinery, gas processing and critical high-temperature service |
| Custom Drilled Slip-On | Non-standard drilling, bore or thickness according to drawing and project requirement | Replacement jobs, OEM equipment and plant maintenance |
Equivalent Standards and International Names
Slip on flange dimensions can be supplied to major international flange standards, while the material is manufactured from Alloy 330 equivalent heat-resistant nickel alloy stock. Because alloy 330 is a special high-temperature grade, the dimensional standard and the material standard are specified separately in many projects. SASA FLANGE can match both requirements based on customer drawings or purchase specifications.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | UNS N08330 / Alloy 330 slip on flange |
| Europe | EN 1092-1 | Alloy 330 equivalent nickel alloy, custom designation by material MTC |
| Germany | DIN 2527 / 2566 | Alloy 330 equivalent high temperature Ni-Fe-Cr alloy |
| Japan | JIS B2220 | Alloy 330 equivalent machined slip on flange |
| China | GB/T 9119 | NS3303 / UNS N08330 equivalent by project requirement |
Production Process Flow
Manufacturing of alloy 330 slip on flanges requires strict control of material identity, heat input and machining accuracy to preserve high-temperature performance and sealing reliability for industrial 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 stress relief as applicable | 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 analysis is performed to confirm the alloy 330 chemistry meets required nickel, chromium and carbon limits. This verification is important for oxidation resistance and high-temperature stability. Test results are reviewed against the applicable material specification and linked to the heat number shown on the mill certificate and flange marking.
2. Mechanical Properties Testing
Mechanical testing verifies tensile strength, yield strength, elongation and hardness of the alloy material used for flange production. These tests help confirm the material has been processed correctly and is suitable for service conditions. Where required, test reports are provided with the order and referenced in the EN 10204 3.1 certification package.
3. Dimensional Inspection
Each alloy 330 slip on flange is checked for outside diameter, thickness, bore size, bolt circle, hole diameter, number of holes and facing geometry. Raised face height or RTJ groove dimensions are also inspected when applicable. This dimensional control ensures proper fit-up with mating flanges, gaskets and pipe during fabrication and installation.
4. PMI Testing and Hydrostatic Testing
Positive material identification is carried out to verify the flange is manufactured from the correct alloy 330 material and not mixed with other stainless or nickel alloys. Hydrostatic testing can be arranged as part of assembled piping verification when project specifications require it. SASA FLANGE supplies EN 10204 3.1 certificate, inspection records and full traceability.
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
Alloy 330 slip on flanges are used where elevated temperature strength, oxidation resistance and reliable welded pipe connection are required. Their nickel-chromium-iron composition makes them especially suitable for thermal processing and aggressive hot gas environments where ordinary stainless steel flanges may lose performance over time.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Heater units, hot gas transfer lines, refinery thermal systems | Provides good oxidation and carburization resistance in elevated temperature service |
| Chemical Processing | High-temperature reactors, process exhaust, hot corrosive gas piping | Nickel-chromium alloy offers stable performance and reliable weldability |
| Power Generation | Boiler auxiliary systems, turbine exhaust related piping, heat recovery units | Handles thermal cycling and maintains strength in hot service environments |
| Water Treatment | Special thermal treatment skids and high-temperature utility systems | Used where standard stainless materials are not sufficient for heat exposure |
| Marine and Offshore | Offshore process modules, exhaust and hot utility piping | Suitable for demanding service requiring heat resistance and durable flange connections |
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 an alloy 330 slip on flange?
A: An alloy 330 slip on flange is a slip-on type pipe flange manufactured from UNS N08330 nickel-iron-chromium heat-resistant alloy. It is designed to slide over the pipe and be welded on both sides. This flange type is chosen for high-temperature service where oxidation resistance, thermal shock resistance and stable mechanical properties are important.
Q: What materials are available for alloy 330 slip on flanges?
A: The main material is UNS N08330, commonly known as Alloy 330. For project comparison or alternative selection, SASA FLANGE can also supply other high-temperature and corrosion-resistant materials such as 310S stainless steel, 253MA, Inconel 600, Incoloy 800H/HT and other nickel alloys according to drawings, standards and operating conditions.
Q: What pressure class is supported?
A: SASA FLANGE can supply alloy 330 slip on flanges in ASME Class 150, 300, 600, 900 and selected Class 1500 sizes depending on diameter and project requirement. We also provide EN PN10 to PN100, JIS 5K to 40K and GB standard dimensions. Facing types include RF, FF and RTJ based on the required sealing performance.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE supplies custom alloy 330 slip on flanges with non-standard outside diameter, bore size, thickness, drilling pattern, bolt hole quantity and special facing details. We can manufacture according to customer drawings, OEM dimensions or replacement requirements, and support special inspections, PMI verification and individual marking for traceable project delivery.
Q: What certificate is provided?
A: Standard documentation can include EN 10204 3.1 material certificate, mill test certificate, chemical analysis report, mechanical test report, dimensional inspection record and PMI report. Hydrostatic testing documentation can also be arranged when required by the order or project specification. All supplied flanges are marked with heat number for full traceability through production and shipment.
Contact Us
If you are looking for alloy 330 slip on flange 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
