Shanxi Xinshunda Flange Manufacturing Co., Ltd. supplies high-precision EN1092-1 Type 04 threaded flanges engineered for medium-pressure piping systems that require quick installation without welding. Fully compliant with European standard EN1092-1, our Type 04 flanges deliver stable sealing, strong pressure resistance and long service life. With 19 years of forging expertise, we provide reliable flange solutions to 3,800+ clients in over 70 countries worldwide.
Product Description
EN1092-1 Type 04 threaded flange is a threaded connection flange with internal pipe threads matched to pipeline external threads. It enables fast installation and disassembly without welding, widely used in small-bore, non-weldable, flammable, explosive or maintenance-frequent piping systems. Our Type 04 flanges are precisely CNC machined to ensure tight thread fit, stable sealing and zero leakage under rated working conditions.
Product Feature and Application
Key Features
- Internal thread design, no welding required for installation
- Fast assembly and disassembly, convenient for maintenance
- High thread precision, stable connection and good sealing
- Excellent pressure and vibration resistance
- Suitable for non-welded, hazardous or frequent overhaul lines
- Full compliance with EN1092-1 dimensional tolerance
Main Applications
- Oil, gas and petroleum pipeline systems
- Chemical, pharmaceutical and food processing lines
- Flammable, explosive and non-weldable working conditions
- Small-bore instrument and utility piping
- Compressed air, water and fluid transmission networks
- Marine, boiler and industrial auxiliary systems
Product Parameter (Specification)
| Standard | EN1092-1 Type 04 |
| Type | Threaded Flange |
| Pressure rating | PN10, PN16, PN25, PN40 |
| Nominal diameter | DN10 – DN100 |
| Face type | Raised Face (RF), Flat Face (FF) |
| Surface roughness | Ra 1.6–3.2 μm (125–250 µin) |
|
Material |
Carbon steel: A105, P250GH, 1.0460, C22.8 Stainless steel: 1.4301 (304), 1.4401 (316), 1.4571 |
| Thread standard | ISO 7/1, NPT, BSPT, BSPP (customizable) |
| Working temperature | −20 °C – 550 °C (material dependent) |
| Certification | EN 10204-3.1 Material Test Certificate |
Production Details
Each EN1092-1 Type 04 threaded flange is manufactured under strict quality control:
- Raw material inspection with mill certification and spectral analysis
- Precision forging and controlled heat treatment for stable mechanical properties
- CNC threading, turning and drilling to ensure high accuracy
- Sealing surface polishing to meet standard roughness requirements
- 100% dimensional inspection using CMM, gauges and thread testers
- Visual inspection, optional MT/UT non-destructive testing
- Hydrostatic pressure test to verify safety and integrity
- Anti-corrosion oil coating and permanent marking
Production Display
Our factory is ISO 9001 certified with full sets of forging lines, CNC machining centers, thread processing equipment and professional testing laboratories. The whole production process is traceable. We support third party inspection by SGS, BV, TÜV or other authorized institutions as customer request.
Packaging & Transportation
- Surface treatment: Anti-corrosion oil, varnish or black paint
- Packaging: Plastic film, woven bag, export-grade wooden case, steel pallet
- Labeling: Heat number, size, material, standard, pressure, batch, thread type
- Documents: Commercial invoice, packing list, certificate of origin, material test certificate
- Transportation: Sea, air, express delivery to over 70 countries
After-sales Service
We provide full life cycle support for EN1092-1 Type 04 flanges:
- Professional technical consultation on thread selection and installation
- Custom thread standards and sizes based on customer drawings
- Timely response to after-sales inquiries and quality claims
- Remote technical guidance and on-site support
- Long-term stable supply and inventory backup
Why Choose Us
- 19 years of professional flange manufacturing experience
- Full compliance with EN1092-1 and international standards
- High-precision thread processing and strict quality control
- Complete specifications and fast delivery
- Direct factory price with reliable quality
- Multilingual service and global logistics support
Contact us now for catalog, quotation or customized solutions of EN1092-1 Type 04 threaded flanges.
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