Description
Product Detail
PEEK threaded flanges are non-metallic threaded flanges machined from polyether ether ketone for joining threaded pipe systems without welding. They offer outstanding resistance to aggressive chemicals, hydrolysis, high purity media and elevated temperatures, while also providing excellent mechanical strength, dimensional stability and electrical insulation. These flanges are widely used in chemical dosing lines, ultrapure water systems, instrumentation, marine utility lines and specialty industrial piping.
SASA FLANGE supplies standard and custom PEEK threaded flanges according to ASME, EN, DIN, JIS, GB and customer drawings. Each order can be supported with raw material verification, chemical analysis reference data, mechanical testing, dimensional inspection, PMI identification where specified, EN 10204 3.1 certificate and full batch number traceability to ensure reliable performance in critical B2B applications.
- ✓Product Name: PEEK Threaded Flanges
- ✓Material Grade: Virgin PEEK, PEEK GF30, PEEK CF30
- ✓Product Type: Non-metallic Threaded Flanges
- ✓Main Feature: Excellent chemical resistance, lightweight construction, insulation and high temperature capability
- ✓Applications: Chemical processing, water treatment, semiconductor, instrumentation, marine and specialty piping systems
Product Parameters
| Product Name | PEEK Threaded Flanges |
| Material Grade | Virgin PEEK, PEEK GF30, PEEK CF30 |
| Material Type | High-performance thermoplastic polymer |
| Product Form | CNC machined threaded flange |
| Size Range | DN15 – DN300 (1/2 inch – 12 inch) |
| Pressure Class | Class 150 – 300 / PN10 – PN40 |
| Sealing Face | RF, FF, optional flat machined gasket face |
| Surface Treatment | Machined natural finish, deburring, cleaning, protective wrapping |
| 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 chemical composition below is provided for reference for industrial PEEK material commonly used in threaded flanges. Final composition depends on the selected raw material grade, such as unfilled or reinforced PEEK, and will follow the applicable manufacturer data sheet and material test certificate supplied with the order.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| Content % | 61.0-63.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | O 18.0-20.0, H 2.0-3.0, glass fiber or carbon fiber optional |
Mechanical Properties
Mechanical properties of PEEK threaded flanges vary by raw material grade, reinforcement type, machining condition and service temperature. The values below are typical room temperature reference data for commonly used industrial PEEK materials. Final test values may differ by thickness and product geometry and should be confirmed against the supplied batch certificate where required.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Virgin PEEK | 95-100 MPa | 90-95 MPa | 20% min | 85-90 Shore D | 1.30 g/cm3 |
| PEEK GF30 | 155-165 MPa | 140-150 MPa | 3-5% min | 88-90 Shore D | 1.50 g/cm3 |
Common Size Table
| Size Range | Pressure Class | Sealing Face | Material | Availability |
|---|---|---|---|---|
| DN15 – DN50 | Class 150 – 300 | RF / FF | Virgin PEEK | Stock / Production |
| DN65 – DN150 | Class 150 – 300 | RF / FF | Virgin PEEK / PEEK GF30 | Stock / Production |
| DN200 – DN300 | Class 150 – 300 | RF / FF | PEEK GF30 / PEEK CF30 | Production |
| DN350 – DN600 | PN10 – PN16 | FF | Virgin PEEK / PEEK GF30 | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| ASME Threaded Flange | NPT threaded flange machined to ASME B16.5 dimensions with raised or flat face | Instrumentation lines, chemical service, low to moderate pressure threaded piping |
| EN Threaded Flange | BSP or ISO threaded flange produced to EN 1092-1 related drilling dimensions and customer thread requirement | European process plants, utility systems and water treatment skids |
| PEEK GF30 Threaded Flange | Glass fiber reinforced PEEK flange with higher stiffness and better dimensional stability | Chemical dosing, pump connections and support-sensitive piping |
| Custom Machined PEEK Flange | Special drilling, thickness, thread form, gasket face or non-standard dimensions based on drawing | OEM equipment, semiconductor systems and compact modular units |
Equivalent Standards and International Names
PEEK threaded flanges are usually machined to international flange drilling and dimensional standards, while the material itself is supplied as industrial PEEK polymer rather than metallic forging grades. Equivalent standard references below indicate the common flange dimension systems used for interchangeability in global projects, with thread form confirmed according to customer specification.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | PEEK threaded flange with NPT thread, virgin PEEK or reinforced PEEK |
| Europe | EN 1092-1 | PEEK machined flange to PN drilling, BSP or ISO thread on request |
| Germany | DIN 2527 / 2566 | PEEK threaded flange to DIN drilling pattern, custom thread specification |
| Japan | JIS B2220 | PEEK threaded flange to JIS drilling dimensions for chemical utility piping |
| China | GB/T 9119 | PEEK threaded flange to GB dimensions, custom machining available |
Production Process Flow
SASA FLANGE controls each production stage from qualified PEEK stock selection to final machining and inspection. Strict dimensional control is essential for threaded engagement, bolt hole alignment and gasket sealing reliability in non-metallic flange 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 PEEK rods, plates or billets from approved sources | Material certificate and batch traceability |
| Cutting / Blank Preparation | Cut raw stock to required blank size for machining | Blank size tolerance and material identification |
| Stress Relief | Material conditioning or stress relief where required for dimensional stability | Temperature and holding time control |
| Machining | Machine sealing face, thread, bolt holes and outside diameter | Dimensional accuracy, thread quality and surface finish |
| Inspection | Final inspection before shipment | Dimension, appearance, marking, PMI identification and pressure test if specified |
Product Inspection
1. Chemical Composition Inspection
For PEEK threaded flanges, chemical composition verification is based on the polymer supplier certificate and incoming raw material identification. SASA FLANGE reviews batch data for base resin and reinforced grades to confirm the correct material type is used. This helps ensure the flange meets the expected chemical resistance, purity level and application requirement before machining.
2. Mechanical Properties Testing
Mechanical property control includes review of raw material data and, when required, reference testing for tensile strength, yield behavior, elongation and hardness of the selected PEEK grade. These checks help confirm the flange material has suitable strength and dimensional stability for threaded joint service, especially in chemical, water treatment and OEM process equipment applications.
3. Dimensional Inspection
Each PEEK threaded flange is checked for flange outside diameter, thickness, bolt circle, hole diameter, facing height and thread accuracy. Sealing face flatness and machined finish are also inspected to support proper gasket compression and leak-tight assembly. Dimensional inspection is especially important for non-metallic flanges because correct fit directly affects performance and service life.
4. PMI Testing and Hydrostatic Testing
PMI for PEEK flanges is generally applied as raw material identification and batch verification rather than alloy chemistry analysis used for metals. When specified, SASA FLANGE can support assembly-level hydrostatic pressure testing or mating system verification. EN 10204 3.1 certificate, dimensional reports and material traceability documents are supplied to support quality assurance for project orders.
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
PEEK threaded flanges are selected for services where corrosion resistance, cleanliness, electrical insulation and low system weight are more important than very high pressure capability. They are widely used in specialized industrial piping, OEM equipment and process systems handling aggressive or high-purity media.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Chemical injection skids, analyzer lines and offshore utility systems | Offers corrosion resistance, low weight and reliable threaded installation in compact systems |
| Chemical Processing | Acid and alkali transfer lines, dosing equipment and reactor auxiliary piping | PEEK withstands many aggressive chemicals and avoids metallic contamination |
| Power Generation | Sampling panels, instrumentation cooling lines and specialty auxiliary systems | Provides insulation, dimensional stability and resistance to treated water and process chemicals |
| Water Treatment | RO skids, chemical dosing units, ultrapure water loops and membrane support systems | Suitable for clean service, corrosion resistance and easy maintenance in threaded piping |
| Marine and Offshore | Light-duty corrosive service lines, onboard chemical systems and monitoring equipment | Resists salt-laden environments and reduces system weight compared with metal flanges |
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 PEEK threaded flange?
A: A PEEK threaded flange is a non-metallic flange machined from polyether ether ketone with an internal thread for connection to threaded pipe or fittings. It is used where corrosion resistance, electrical insulation, low weight and clean service are required. Compared with welded flanges, it allows easier installation in compact systems and specialized process lines.
Q: What materials are available for PEEK threaded flanges?
A: SASA FLANGE can supply PEEK threaded flanges in virgin PEEK, glass-filled PEEK and carbon-filled PEEK depending on pressure, stiffness and application requirements. Virgin PEEK is preferred for clean and high-purity service, while reinforced grades provide greater rigidity and dimensional stability. Material selection is confirmed according to medium, temperature, pressure and customer specification.
Q: What pressure class is supported?
A: PEEK threaded flanges are commonly supplied in ASME Class 150 and 300, or EN/DIN equivalents such as PN10, PN16, PN25 and PN40, depending on size and design. Because PEEK is a thermoplastic material, pressure capability must be evaluated together with service temperature, flange thickness and media. SASA FLANGE can recommend suitable dimensions based on project conditions.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE can manufacture custom PEEK threaded flanges according to drawings or project requirements, including special outside diameter, thickness, drilling pattern, thread form, gasket face and reinforced material grade. We also support machining to ASME, EN, DIN, JIS and GB drilling dimensions for OEM assemblies, skid packages and replacement components.
Q: What certificate is provided?
A: SASA FLANGE can provide EN 10204 3.1 material certificate, raw material batch documents, dimensional inspection reports and marking traceability for PEEK threaded flanges. Where required, we also support PMI identification records, pressure or assembly test reports and full order documentation. Final certification package depends on the selected standard, application and customer project specification.
Contact Us
If you are looking for peek 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
