Description
Product Detail
Alloy 330 threaded flanges are internally threaded forged flanges designed to connect threaded pipe or fittings without butt welding. Manufactured from heat-resistant nickel-iron-chromium alloy, they offer excellent oxidation resistance, good carburization resistance and stable strength at elevated temperature. These flanges are used in furnace lines, thermal processing equipment, chemical plants, high-temperature utility piping, marine exhaust systems and power generation services where corrosion and heat resistance are both important.
SASA FLANGE supplies alloy 330 threaded flanges in standard and customized dimensions with strict raw material and process control. Each order can be supported by chemical analysis, mechanical testing, dimensional inspection, PMI testing, sealing face verification, EN 10204 3.1 certificate and full heat number traceability to meet global project and MRO procurement requirements.
- ✓Product Name: Alloy 330 Threaded Flanges
- ✓Material Grade: UNS N08330 / Alloy 330
- ✓Product Type: Forged threaded flange with female pipe thread
- ✓Main Feature: Excellent oxidation and carburization resistance in high-temperature service
- ✓Applications: Furnace piping, chemical processing, power plants, marine systems, heat treatment equipment
Product Parameters
| Product Name | Alloy 330 Threaded Flanges |
| Material Grade | UNS N08330 / Alloy 330 |
| Material Type | Nickel-Iron-Chromium heat resistant alloy |
| Product Form | Forged or machined threaded flange |
| Size Range | DN15 – DN600 (1/2 inch – 24 inch) |
| Pressure Class | Class 150 – 2500 / PN16 – PN100 |
| Sealing Face | RF, FF, RTJ |
| Surface Treatment | Machined, pickled, passivated, protective oil coating for shipment |
| Standard | ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS, GB 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 Alloy 330 forged material used for threaded flanges. Actual composition may vary slightly by melt, product form and applicable material standard. Final values are subject to the relevant material specification, purchase requirement and the original mill test certificate supplied with the order.
| 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 | 1.25 max | Fe balance, Cu 1.0 max |
Mechanical Properties
Mechanical properties shown below are typical reference values for Alloy 330 material used in forged flange production. Actual results may vary with forging ratio, section thickness, heat treatment condition and test temperature. For critical applications, SASA FLANGE can provide project-specific test reports and inspection records against the ordered material specification.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| UNS N08330 / Alloy 330 | 655 MPa min | 275 MPa min | 30% min | 187HB max | 7.94 g/cm3 |
| Alloy 330 Forged Flange Material | 655 – 780 MPa | 275 – 360 MPa | 30 – 40% min | 163 – 187HB | 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 – 2500 | RF / RTJ | UNS N08330 / Alloy 330 | Production |
| DN700 – DN1500 | Class 150 – 900 | RF | UNS N08330 / Alloy 330 | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| Threaded RF Flange | Raised face threaded flange with female pipe thread for gasketed bolted connection | General process piping, utilities, maintenance replacement |
| Threaded FF Flange | Flat face threaded flange for low-pressure systems and full-face gasket arrangements | Water, low-pressure chemical lines, cast iron valve connections |
| Threaded RTJ Flange | Ring type joint threaded flange for higher pressure and better sealing reliability | High-pressure hydrocarbon, gas and critical service lines |
| Custom Threaded Flange | Special drilling, thread form, thickness or facing machined to drawing | OEM equipment, furnace systems, retrofit and international projects |
Equivalent Standards and International Names
Threaded flange dimensions are manufactured to international flange standards, while Alloy 330 refers to the material grade used for the forged component. Equivalent naming may differ by region, and exact material substitution should be confirmed according to service temperature, corrosion requirement and project specification. SASA FLANGE can assist with dimensional and material cross-reference for export orders.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | Threaded flange in UNS N08330 / Alloy 330 |
| Europe | EN 1092-1 | Special alloy threaded flange, material by UNS N08330 equivalent on request |
| Germany | DIN 2527 / 2566 | DIN pattern threaded flange in Alloy 330 equivalent heat resistant alloy |
| Japan | JIS B2220 | JIS threaded flange in Alloy 330 equivalent nickel alloy |
| China | GB/T 9119 | GB threaded flange in UNS N08330 / NS alloy equivalent on request |
Production Process Flow
SASA FLANGE controls each production stage from certified alloy raw material to final machining and inspection. For Alloy 330 threaded flanges, special attention is given to alloy verification, machining accuracy and thread quality to ensure reliable sealing and traceable supply.
- 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 annealing as applicable | Temperature and holding time control |
| Machining | Sealing face, bolt holes, threads and dimensions | Dimensional accuracy and surface finish |
| Inspection | Final inspection before shipment | Dimension, surface, PMI, hydrostatic |
Product Inspection
1. Chemical Composition Inspection
Chemical composition inspection verifies that Alloy 330 material conforms to the required nickel, chromium, iron and other alloying element limits. Spectrometer or laboratory analysis is performed on incoming raw material or finished product samples to confirm grade identity, prevent mix-up and ensure compliance with the material test certificate and customer specification.
2. Mechanical Properties Testing
Mechanical testing is carried out to confirm tensile strength, yield strength, elongation and hardness of the forged alloy material. These checks help verify that the flange has been properly processed and heat treated for intended service conditions. Test results can be included in the EN 10204 3.1 documentation package when specified by the buyer.
3. Dimensional Inspection
Dimensional inspection covers outside diameter, thickness, bolt circle, bolt holes, bore size, thread accuracy and raised face or RTJ profile. Each flange is checked against the applicable ASME, EN, DIN, JIS or GB dimensional standard. This control is critical to ensure interchangeability, correct fit-up and reliable field installation.
4. PMI Testing and Hydrostatic Testing
PMI testing is used to positively identify Alloy 330 chemistry and avoid material substitution in critical projects. When required, hydrostatic pressure testing is conducted on assembled piping systems or special components according to project procedures. SASA FLANGE supplies EN 10204 3.1 certificate, heat number traceability and inspection records for export documentation and QA approval.
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 threaded flanges are selected for piping systems that require both elevated-temperature capability and corrosion resistance, while also benefiting from threaded assembly without welding. They are particularly useful in maintenance work, instrument branches, small-bore process lines and special alloy systems used across demanding industrial sectors.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Small-bore utility lines, analyzer connections, heated process systems | Provides corrosion resistance and allows threaded installation where welding is limited |
| Chemical Processing | High-temperature chemical lines, oxidizing media, thermal process equipment | Alloy 330 offers good oxidation resistance and stable performance at elevated temperatures |
| Power Generation | Boiler auxiliary lines, hot gas piping, turbine support systems | Suitable for high-temperature service with dependable mechanical strength |
| Water Treatment | Special chemical dosing skids and hot utility systems | Useful where threaded maintenance-friendly connections are required in alloy piping |
| Marine and Offshore | Exhaust systems, heated service lines, corrosion-prone equipment connections | Combines heat resistance, corrosion performance and compact threaded assembly |
Why Choose SASA FLANGE?
- ✓Professional manufacturer of Threaded 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 threaded flange?
A: An alloy 330 threaded flange is a forged flange made from UNS N08330 nickel-iron-chromium alloy with internal pipe threads. It connects to threaded pipe without welding, making it useful for small-bore, high-temperature or maintenance-sensitive systems. It is commonly used where oxidation resistance, carburization resistance and reliable bolted sealing are required.
Q: What materials are available for alloy 330 threaded flanges?
A: The standard material is UNS N08330, commonly known as Alloy 330. Depending on the project, SASA FLANGE can also discuss equivalent heat-resistant or corrosion-resistant nickel alloy grades for comparison. Material selection depends on service temperature, medium, pressure class and dimensional standard. PMI verification and EN 10204 3.1 certificate are available for supplied material.
Q: What pressure class is supported?
A: SASA FLANGE can supply alloy 330 threaded flanges in ASME Class 150, 300, 600, 900, 1500 and up to 2500, subject to size and machining feasibility. For metric projects, PN16 to PN100 options can also be produced according to applicable standards or drawings. Final suitability should always be checked against service temperature and design code requirements.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE supplies custom alloy 330 threaded flanges with non-standard outside diameter, bore, thickness, drilling pattern, facing type and thread form such as NPT or BSPT. We can also machine special gasket faces, adapt flange dimensions to OEM drawings and support low-volume or project-based production with full inspection and traceability.
Q: What certificate is provided?
A: Standard supply can include EN 10204 3.1 material certificate with heat number traceability. On request, SASA FLANGE can provide PMI reports, chemical analysis results, mechanical test records, dimensional inspection reports and packing lists. Hydrostatic testing is generally applied according to project or assembly requirements, and all documentation can be prepared for export and QA approval.
Contact Us
If you are looking for alloy 330 threaded 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
