Shanxi Xinshunda Flange Manufacturing Co., Ltd. supplies high-precision BS4504 PN6 slip-on flanges engineered for low-pressure general-purpose piping systems. Fully compliant with BS4504 (equivalent to EN1092-1 Type 02) and suitable for water, gas, HVAC, fire protection, utilities and general industry, our PN6 slip-on flanges feature easy installation, stable sealing and cost-effective performance. With 19 years of forging and machining expertise, we provide reliable flange solutions to clients in British, European, Commonwealth and global markets.
Product Description
BS4504 PN6 slip-on flange is a low-pressure hubbed slip-on flange designed for fillet welding to pipes. It slides over the pipe and is welded inside and outside for strong bonding and good alignment. Rated at 6 bar (PN6), it is widely used in low-load fluid pipelines where quick installation and economic cost are required. Our BS4504 PN6 slip-on flanges are precisely forged and CNC machined to meet standard dimensions, ensuring perfect interchangeability and long service life.
Product Feature and Application
Key Features
- Full compliance with BS4504 standard dimensions and tolerances
- PN6 low-pressure rating for economical general applications
- Slip-on design for easy alignment, fast welding and installation
- Short hub structure improves rigidity and reduces stress
- Smooth sealing face ensures reliable gasket connection
- High dimensional accuracy and good interchangeability
- Suitable for carbon steel and stainless steel pipelines
- Cost-effective for large-scale low-pressure projects
Main Applications
- Municipal water supply and drainage pipelines
- HVAC, heating and compressed air networks
- Fire protection piping and utility systems
- General industrial low-pressure fluid lines
- Construction, civil engineering and auxiliary piping
- British / European standard valve and fitting connections
- Commonwealth, Middle East, African and Asian markets
Product Parameter
| Standard | BS4504 |
| Pressure rating | PN6 (6 bar) |
| Nominal diameter | DN10 – DN2000 (1/2″ – 78″) |
| Type | Slip-On Hubbed Flange |
| Face type | Raised Face (RF), Flat Face (FF) |
| Surface roughness | Ra 1.6–3.2 μm |
|
Materials |
Carbon steel: S235JR, A105, C22.8, P250GH Stainless steel: 1.4301 (304), 1.4401 (316), 304L, 316L |
| Working temperature | −10 °C – 300 °C |
| Certification | EN 10204 3.1 Material Test Certificate |
Production Details
Each BS4504 PN6 slip-on flange is manufactured under strict quality control:
- Raw material inspection with mill certificates and spectral analysis
- Precision forging and controlled heat treatment for stable mechanical properties
- CNC turning, facing and drilling to ensure high dimensional accuracy
- 100% dimensional inspection using calipers, gauges and CMM
- Visual inspection and optional MT/UT non-destructive testing
- Hydrostatic testing to verify pressure integrity and safety
- Anti-corrosion oil coating and permanent marking
- Full traceability from raw material to finished product
Production Display
Our ISO 9001 certified factory is equipped with full sets of forging lines, CNC machining centers, heat treatment furnaces 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: Size, pressure, material, standard, heat number, batch
- Documents: Commercial invoice, packing list, certificate of origin, material test report
- Transportation: Sea, air and express delivery to over 70 countries
After-sales Service
We provide full life cycle technical support for BS4504 PN6 flanges:
- Professional consultation on selection, installation and welding
- Custom sizes, materials and drilling per customer drawings
- Timely response to after-sales inquiries and quality claims
- Remote technical guidance and on-site support
- Long-term stable supply and inventory for large projects
Why Choose Shanxi Xinshunda?
- 19 years of professional flange manufacturing experience
- Full compliance with BS4504 and EN1092-1 standards
- Complete PN6 size range DN10–DN2000 with fast delivery
- Strict quality control and complete testing documents
- Direct factory price with stable lead times
- Multilingual service and global logistics support
Contact us today for catalog, quotation or customized solutions of BS4504 PN6 slip-on flanges.
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