Description
Product Detail
Zirconium threaded flanges are internally threaded pipe flanges designed for non-welded assembly where excellent corrosion resistance is required. Compared with carbon steel and many stainless grades, zirconium offers outstanding resistance in organic acids, acetic acid, formic acid, hydrochloric service under specific controlled conditions, and other aggressive media. These flanges are commonly used in chemical plants, pharmaceutical process lines, marine systems, specialty reactors and high-purity service where contamination control and corrosion performance are critical.
SASA FLANGE supplies zirconium threaded flanges in standard and customized dimensions according to ASME B16.5, EN 1092-1, DIN, JIS and GB requirements where applicable. Each order can be supported with chemical analysis, mechanical testing, dimensional inspection, PMI testing, EN 10204 3.1 certificate and full heat number traceability. Custom drilling, special facing, non-standard thickness and project-specific marking are available on request.
- ✓Product Name: Zirconium Threaded Flanges
- ✓Material Grade: ASTM B564 R60702 / R60704 / R60705
- ✓Product Type: Forged or machined threaded flanges with female NPT or BSP threads
- ✓Main Feature: Excellent corrosion resistance with weld-free installation for threaded piping systems
- ✓Applications: Chemical processing, acid service, marine systems, pharmaceutical plants and specialty water treatment
Product Parameters
| Product Name | Zirconium Threaded Flanges |
| Material Grade | ASTM B564 R60702, R60704, R60705 |
| Material Type | Zirconium and zirconium alloy |
| Product Form | Forged flange, machined flange, threaded flange |
| Size Range | DN15 – DN600 (1/2 inch – 24 inch) |
| Pressure Class | Class 150 – 1500 / PN10 – PN100 |
| Sealing Face | RF, FF, RTJ |
| Surface Treatment | Pickled, machined finish, cleaned, passivated, glass bead blasted |
| Standard | ASME B16.5, 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 for general reference for common zirconium flange grades. Actual composition depends on the selected ASTM grade, melting route and applicable material standard. Final values are confirmed by the material test certificate and project inspection requirements before shipment.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| R60702 Typical % | 0.05 max | 0.03 max | 0.05 max | 0.015 max | 0.015 max | 0.05 max | 0.05 max | 0.05 max | Hf 4.5 max, Fe+Cr 0.20 max, O 0.16 max, N 0.025 max |
Mechanical Properties
Mechanical properties of zirconium threaded flanges vary by grade, product form, reduction ratio, annealed condition and section thickness. The values below are typical reference data for forged or wrought material used for flange machining. Certified test results are provided according to the actual heat and delivery condition.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| R60702 | 379 MPa min | 207 MPa min | 16% min | Max 95 HRB | 6.51 g/cm3 |
| R60705 | 552 MPa min | 379 MPa min | 16% min | Max 32 HRC | 6.56 g/cm3 |
Common Size Table
| Size Range | Pressure Class | Sealing Face | Material | Availability |
|---|---|---|---|---|
| DN15 – DN50 | Class 150 – 600 | RF | R60702 / R60704 | Stock / Production |
| DN65 – DN300 | Class 150 – 1500 | RF / RTJ | R60702 / R60705 | Stock / Production |
| DN350 – DN600 | Class 150 – 900 | RF / RTJ | R60702 / R60705 | Production |
| DN15 – DN150 | PN10 – PN100 | FF / RF | R60702 / R60704 | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| ASME Threaded Flange | Female threaded flange manufactured to ASME B16.5 dimensions and pressure classes | NPT threaded process piping in chemical and specialty industrial systems |
| EN Threaded Flange | Threaded flange produced to EN 1092-1 dimensional requirements with project-specific threading | European process lines, water treatment skids and OEM equipment |
| RF Threaded Flange | Raised face design for use with standard gasketed bolted joints | General corrosive liquid and gas service |
| RTJ Threaded Flange | Ring type joint facing for higher pressure sealing performance | High-pressure corrosive process and critical hydrocarbon service |
Equivalent Standards and International Names
Threaded flange dimensions can be produced to major international standards, while zirconium material grades are generally specified by ASTM and UNS designations. Equivalent project naming may vary by region, so final procurement should confirm both flange dimensional standard and zirconium alloy grade on the purchase order and MTC.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | Threaded flange in ASTM B564 UNS R60702 / R60704 / R60705 |
| Europe | EN 1092-1 | EN dimensional flange machined from zirconium ASTM B564 R60702 |
| Germany | DIN 2527 / 2566 | DIN pattern threaded flange in zirconium grade R60702 or R60705 |
| Japan | JIS B2220 | JIS flange dimensions with zirconium threaded bore to project requirement |
| China | GB/T 9119 | GB flange dimensions machined from zirconium forging or plate grade R60702 |
Production Process Flow
Manufacturing control is important for zirconium threaded flanges because material cleanliness, machining accuracy and traceability directly affect corrosion performance and assembly reliability. SASA FLANGE applies process control from raw material verification to final marking and export packing.
- 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 zirconium billets, forgings or plates with full heat records | Material certificate and traceability |
| Forging | Hot forge or cut preform to required flange blank geometry | Forging temperature and reduction ratio |
| Heat Treatment | Stress relief or annealing according to grade and product form | Temperature and holding time control |
| Machining | Machine threads, sealing face, bolt holes and outside 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 the zirconium grade against ASTM B564 requirements and project specifications. Spectrometric analysis checks controlled elements such as hafnium, iron, chromium, oxygen, nitrogen and residual impurities. This ensures the selected material grade is suitable for corrosive service and matches the heat number stated on the material certificate.
2. Mechanical Properties Testing
Mechanical testing confirms that the zirconium material meets the specified tensile strength, yield strength, elongation and hardness values for the ordered grade. Test samples are taken in accordance with applicable standards and reviewed against purchase requirements. These tests help verify flange integrity for assembly, pressure retention and service reliability.
3. Dimensional Inspection
Dimensional inspection covers outside diameter, flange thickness, bolt circle, bolt hole diameter, hub dimensions, thread accuracy and sealing face finish. Raised face or ring joint details are checked with calibrated gauges and instruments. This inspection ensures compatibility with mating flanges, correct gasket seating and smooth installation at the job site.
4. PMI Testing and Hydrostatic Testing
PMI testing is used to confirm positive material identification and prevent grade mix-up during production and packing. Hydrostatic testing can be arranged according to project requirement for assembled components or related fittings. SASA FLANGE provides EN 10204 3.1 certificate, inspection records and traceable marking for quality documentation and export compliance.
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
Zirconium threaded flanges are selected for piping systems that require excellent corrosion resistance together with convenient threaded installation. They are especially suitable for compact lines, maintenance-friendly systems and corrosive media service where welding is restricted, contamination must be minimized or disassembly is required for inspection and cleaning.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Sampling lines, chemical injection systems and specialty corrosive service units | Provides corrosion resistance in aggressive media and allows weld-free threaded assembly |
| Chemical Processing | Acid handling lines, reactor connections, solvent units and organic acid process piping | Zirconium offers excellent resistance to many corrosive chemicals and process fluids |
| Power Generation | FGD systems, chemical dosing lines and auxiliary corrosive service piping | Used where corrosion resistance and maintenance access are important |
| Water Treatment | High-purity water systems, brine handling and aggressive chemical dosing packages | Suitable for contamination-sensitive and corrosion-critical service conditions |
| Marine and Offshore | Corrosive utility lines, seawater-related specialty systems and skid-mounted equipment | Good resistance to severe service environments with compact threaded installation |
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 a zirconium threaded flange?
A: A zirconium threaded flange is a female-threaded pipe flange machined from zirconium or zirconium alloy material for bolted piping connections without welding. It is used in corrosive process systems where high chemical resistance is required and where threaded installation offers easier maintenance, dismantling or field assembly compared with welded flange types.
Q: What materials are available for zirconium threaded flanges?
A: Common materials include ASTM B564 zirconium grades R60702, R60704 and R60705. Grade selection depends on corrosion environment, mechanical strength and project specification. For many chemical applications, R60702 is widely used, while alloyed grades may be selected for higher strength or specific process conditions. Material selection should match the service medium and operating temperature.
Q: What pressure class is supported?
A: SASA FLANGE can supply zirconium threaded flanges in ASME Class 150, 300, 600, 900, 1500 and selected project-specific ratings, with metric PN ranges such as PN10 to PN100 where required. Actual availability depends on size, face type and threading requirement. High-pressure classes are generally produced to order due to the value and machining complexity of zirconium.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE can manufacture custom zirconium threaded flanges according to drawings or project data sheets. We support non-standard outside diameters, thickness, bolt drilling, NPT or BSP threads, raised face or RTJ facing, special surface finish and customized marking. Material can be supplied from certified forgings or plates with full traceability and inspection documentation.
Q: What certificate is provided?
A: Standard quality documentation includes EN 10204 3.1 material certificate with heat number traceability. Depending on project requirements, we can also provide chemical analysis reports, mechanical test results, dimensional inspection records, PMI testing reports and packing lists. Hydrostatic testing or third-party inspection can be arranged when specified in the purchase order or contract documentation.
Contact Us
If you are looking for zirconium 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
