Secure Connection Solutions
Full-face and raised-face EPDM gaskets in various thicknesses
Ductile iron or steel backing rings for flange connections
Flange bolt kits with nuts and washers (carbon steel or stainless steel)
Blind flanges for pressure testing or future branch connections
Lap joint flanges for stub end fittings in plastic or lined pipes
Long-neck flanges for welding to steel pipe transitions
Custom fabricated flanged spool pieces with specified face-to-face dimensions
Third-party flange inspection (dimensional and pressure testing)
Application Environments
Water treatment facilities
Industrial processing plants
Municipal water networks
Fire fighting systems
Chemical transportation
Mining operations
Power generation plants
Marine applications
Irrigation projects
HVAC installations
Performance Testing
Hydrostatic pressure test: Each fitting tested at 1.5 times rated pressure for minimum 60 seconds per EN 12266
Flange face flatness check: All flange faces verified for flatness and surface finish per EN 1092-1 requirements
Bolt hole alignment gauge: Random sampling to verify bolt hole positions match standard drilling templates
Coating thickness measurement: External epoxy coating measured at multiple points to ensure minimum 250 microns
Cement lining inspection: Thickness, hardness, and holiday detection per ISO 4179
Material verification: Spectrographic analysis of ductile iron chemistry to confirm EN 1563 compliance
Third-party inspection: SGS, Bureau Veritas, or customer-nominated inspector available
Key Technical Specifications
| Item | Specification |
|---|---|
| Product Type | Flanged Ductile Iron Fittings |
| Connection Type | Flanged ends (drilled to standard patterns) |
| Nominal Size | DN50 – DN2000 |
| Pressure Rating | PN10 / PN16 / PN25 / Class 125 / Class 150 |
| Flange Drilling Standards | EN 1092-2 / ANSI B16.1 / BS 4504 |
| Fitting Types | Bends, tees, reducers, crosses, adaptors, blind flanges |
Application
Pipe connections to gate valves, butterfly valves, and check valves
Pump suction and discharge flanged connections
Equipment isolation sections requiring bolted dismantling joints
Flanged spool pieces for metering and instrumentation runs
Connections to expansion joints and strainers
Pipe terminations and blanking ends using blind flanges
Media Compatibility
Suitable for potable water, raw water, treated sewage, cooling water, and neutral industrial fluids. Temperature range -10°C to 80°C depending on gasket material.
Materials
Fitting body: Ductile iron EN-GJS-400-15 / EN-GJS-450-10 (ASTM A536)
Internal lining: Cement mortar to ISO 4179 (type M or type T) / Optional epoxy lining to EN 14901
External coating: Fusion-bonded epoxy (minimum 250 microns) to ISO 8179 / Optional polyurethane coating
Flange gaskets (supplied separately): EPDM, NBR, or compressed fiber per project requirement
Bolts and nuts (supplied separately): Carbon steel with galvanized coating / Stainless steel A2 or A4.
Accessories
Excellent durability
Superior strength
Outstanding corrosion resistance
Easy installation process
Minimal maintenance required
Cost-effective operation
Reliable performance
Long service life
Packaging Details
Protect flange faces
Use cushion materials
Bundle with steel strips
Place on wooden pallets
Cover waterproof material
Mark information clearly
Include installation manuals
Add quality certificates
Service Support
Provide 24-month warranty
Offer technical consultation
Supply spare components
Give installation guidance
Respond quickly
Solve problems efficiently
Accept customer feedback
Continue improvement
Why Choose Our Products
Our flanged ductile iron fittings ensure reliable performance. They guarantee system safety. These products meet international standards. Professionals trust flanged ductile iron fittings worldwide.
Final Recommendation
Install our flanged ductile iron fittings today. Improve your pipeline system. Contact us immediately. Get professional technical support.
Our Advantages
As a well-known manufacturer of ductile iron pipes in China, Jincheng Tianyi Casting Co., Ltd. has been deeply engaged in the ductile iron pipe industry for thirteen years. It has achieved a transformation from a small-scale operation to semi-automatic mechanized operations, from small warehouses to large-scale open-air configurable warehouses. The total investment and operation amount of the project exceeds 600 million yuan. The company covers an area of 300 acres. The company has over 800 employees, including 20 professional managers and 36 quality control managers.
