Description
Product Detail
Inconel threaded flanges are forged flanges with internal threads that connect to externally threaded pipe without field welding. They are widely used in hazardous, corrosive or high-temperature piping systems where maintenance access, fire risk reduction or installation flexibility is important. Typical services include chemical lines, instrumentation connections, offshore utilities, steam systems and process piping handling chlorides, acids and oxidizing media.
SASA FLANGE supplies threaded flanges in standard and customized dimensions according to ASME B16.5, EN 1092-1, DIN, JIS and GB requirements. Each order can be supported with chemical analysis, mechanical testing, dimensional inspection, PMI testing, sealing face verification, EN 10204 3.1 certificate and full heat number traceability to ensure reliable performance in critical industrial service.
- ✓Product Name: Inconel Threaded Flanges
- ✓Material Grade: Inconel 600, 625, 718, Incoloy 800/800H
- ✓Product Type: Forged threaded pipe flanges
- ✓Main Feature: Excellent oxidation resistance, corrosion resistance and high-temperature strength without welding requirement
- ✓Applications: Oil and gas, chemical processing, power generation, marine, offshore and water treatment systems
Product Parameters
| Product Name | Inconel Threaded Flanges |
| Material Grade | Inconel 600, Inconel 625, Inconel 718, Incoloy 800, Incoloy 800H |
| Material Type | Nickel-based alloy forged material |
| Product Form | Threaded flange, screwed flange, female threaded forged flange |
| Size Range | DN15 – DN600 (1/2 inch – 24 inch) |
| Pressure Class | Class 150 – 2500 / PN16 – PN100 |
| Sealing Face | RF, FF, RTJ |
| Surface Treatment | Natural machined, pickled, passivated, cleaned and protected for export |
| Standard | ASME B16.5, 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 representative reference for commonly supplied Inconel 625 threaded flanges. Final chemistry depends on the selected alloy grade, applicable ASTM or EN material standard, and the original mill test certificate. SASA FLANGE verifies incoming material by documentation review and PMI testing to ensure conformance before machining and shipment.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| Inconel 625 Content % | 0.10 max | 0.50 max | 0.50 max | 0.015 max | 0.015 max | 20.0 – 23.0 | 58.0 min | 8.0 – 10.0 | Nb+Ta 3.15 – 4.15, Fe 5.0 max |
Mechanical Properties
Mechanical properties shown below are typical minimum values for widely used Inconel grades in forged flange applications. Actual values can vary depending on alloy grade, solution annealing or age-hardening condition, forging reduction ratio and section thickness. For project supply, SASA FLANGE provides test reports based on the actual heat and product condition specified in the order.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Inconel 600 | 550 MPa min | 240 MPa min | 30% min | 200 HB max | 8.47 g/cm3 |
| Inconel 625 | 827 MPa min | 414 MPa min | 30% min | 240 HB max | 8.44 g/cm3 |
Common Size Table
| Size Range | Pressure Class | Sealing Face | Material | Availability |
|---|---|---|---|---|
| DN15 – DN50 | Class 150 – 600 | RF | Inconel 600 / 625 | Stock / Production |
| DN65 – DN300 | Class 150 – 1500 | RF / RTJ | Inconel 600 / 625 / 800H | Stock / Production |
| DN350 – DN600 | Class 150 – 2500 | RF / RTJ | Inconel 625 / 718 | Production |
| DN700 – DN1500 | Class 150 – 900 | RF | Custom nickel alloy grades | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| ASME Threaded Flange | Flange with NPT threaded bore manufactured to ASME B16.5 dimensions | Small to medium bore high-pressure piping without welding |
| EN Threaded Flange | Threaded flange produced to EN 1092-1 pressure and dimensional requirements | European process plants and utility piping systems |
| RF Threaded Flange | Raised face design for use with standard ring gaskets | General industrial service, chemical and utility lines |
| RTJ Threaded Flange | Ring type joint face for metallic gasket sealing in severe service | High-pressure, high-temperature and critical hydrocarbon systems |
Equivalent Standards and International Names
Inconel threaded flanges can be manufactured to major international flange standards, while the alloy itself is identified by UNS, ASTM or EN material designations. Equivalent naming may vary by region, but the final supplied product is matched to the requested dimensional standard, pressure rating, thread type and alloy grade stated in the purchase order.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | UNS N06600, N06625, N07718 threaded flanges |
| Europe | EN 1092-1 | 2.4816, 2.4856, 2.4668 nickel alloy flange equivalents |
| Germany | DIN 2566 | DIN threaded flanges in Werkstoff 2.4816 / 2.4856 |
| Japan | JIS B2220 | Nickel alloy threaded flanges in equivalent Inconel grades |
| China | GB/T 9119 | Nickel alloy threaded flanges to UNS N06600 / N06625 equivalents |
Production Process Flow
SASA FLANGE applies controlled manufacturing from raw material verification to final packing to ensure threaded flanges meet dimensional, metallurgical and pressure service requirements for critical industrial 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 age hardening as required by alloy grade | Temperature and holding time control |
| Machining | Sealing face, internal thread, 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 by reviewing the raw material mill certificate and, where required, laboratory analysis to confirm conformity with the specified Inconel grade. Key alloying elements such as nickel, chromium, molybdenum and niobium are checked against the applicable standard to ensure corrosion resistance, heat resistance and correct material identity before production starts.
2. Mechanical Properties Testing
Mechanical testing verifies that the forged alloy meets the required tensile strength, yield strength, elongation and hardness values for the selected grade and heat treatment condition. These tests help confirm that the threaded flange can withstand installation loads, internal pressure and temperature fluctuations encountered in demanding process piping and pressure service.
3. Dimensional Inspection
Dimensional inspection covers outside diameter, thickness, hub profile where applicable, bore size, thread accuracy, bolt hole circle, bolt hole diameter and sealing face finish. SASA FLANGE also checks raised face or RTJ geometry to ensure proper gasket seating and compatibility with mating flanges according to ASME, EN, DIN, JIS or GB drawings.
4. PMI Testing and Hydrostatic Testing
PMI testing is carried out to positively identify the nickel alloy grade and prevent material mix-up in critical applications. Hydrostatic testing can be arranged as part of assembled piping or special project requirements. EN 10204 3.1 certificate, heat number traceability, dimensional reports and inspection records are supplied to support quality assurance and project 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
Inconel threaded flanges are selected for severe operating environments where excellent resistance to heat, oxidation, chloride attack and aggressive process media is required. Their non-welded threaded connection makes them especially useful for maintenance-friendly systems, small-bore high-pressure piping and locations where hot work must be minimized during installation or repair.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Instrumentation lines, chemical injection skids, offshore utility piping, sour service auxiliary systems | Provides high corrosion resistance and allows threaded installation where welding is restricted |
| Chemical Processing | Acid handling lines, chlorinated media service, reactor auxiliaries, heat exchanger connections | Excellent resistance to oxidizing and reducing environments with reliable sealing |
| Power Generation | Boiler auxiliary systems, steam tracing, turbine support piping, high-temperature process lines | Maintains strength and oxidation resistance at elevated temperatures |
| Water Treatment | Desalination units, dosing skids, brine handling and aggressive chemical treatment systems | Resists chloride-rich media and supports long service life |
| Marine and Offshore | Seawater utilities, platform piping, fire-safe maintenance areas, corrosive marine atmospheres | Performs well in salt-laden environments and supports easier field replacement |
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 Inconel threaded flange?
A: An Inconel threaded flange is a forged nickel alloy flange with an internal pipe thread, usually NPT or BSP as specified, allowing connection to threaded pipe without welding. It is used in corrosive, high-temperature or hazardous environments where Inconel’s alloy performance is needed and where maintenance convenience or reduced hot work is important.
Q: What materials are available for Inconel threaded flanges?
A: SASA FLANGE commonly supplies Inconel 600, Inconel 625, Inconel 718 and Incoloy 800/800H for threaded flange production. Material selection depends on temperature, corrosion environment, mechanical strength requirement and project specification. Equivalent UNS or EN alloy numbers can also be supplied, subject to raw material availability and standard compliance.
Q: What pressure class is supported?
A: Inconel threaded flanges are typically available in ASME Class 150, 300, 600, 900, 1500 and 2500, depending on size and applicable standard. EN and DIN pressure ratings such as PN16, PN25, PN40, PN64 and PN100 can also be produced. Final pressure class selection should match the piping design code, service temperature and wall thickness.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE can manufacture custom threaded flanges according to customer drawings and project requirements, including non-standard dimensions, special drilling patterns, RTJ or RF sealing faces, special thread forms, and customized nickel alloy grades. Additional machining, marking, packing and inspection requirements can also be arranged for EPC and maintenance projects.
Q: What certificate is provided?
A: SASA FLANGE provides EN 10204 3.1 material certificate with heat number traceability for supplied Inconel threaded flanges. Supporting documents can include raw material MTC, dimensional inspection report, PMI test report, mechanical test results and other project-required records. Hydrostatic testing documentation can be arranged when specified in the purchase order or technical requirement.
Contact Us
If you are looking for inconel 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
