Complete Connection Solutions
Our DI flange pipes and fittings provide perfect connections. They ensure secure pipeline systems. These products suit various industrial applications. They offer reliable performance. Choose our complete flange solutions.
Product Highlights
Mechanical properties: Ductile iron material provides high tensile strength and impact resistance while maintaining ductility suitable for buried and above-ground installations.
Corrosion protection system: Multi-layer anti-corrosion coating ensures long service life in aggressive soil, industrial and marine environments.
Flanged joint reliability: Precision-machined flange faces with standardized drilling patterns guarantee leak-tight connections and simplified on-site assembly.
Full range of fittings: Comprehensive selection including bends, tees, reducers and custom configurations to accommodate complex pipeline routing.
Key Applications
Municipal water transmission and distribution trunk lines
Long-distance water transfer projects
Fire protection ring mains and plant piping
Gas transmission networks (low to medium pressure)
Industrial cooling water circuits and process piping
Desalination plants and seawater intake systems
Product Parameters Table
|
Parameter |
Specification |
|
Product Name |
DI Flange Pipes and Fittings |
|
Material |
Ductile Iron 500-7 |
|
Pressure Rating |
PN10/16/25 |
|
Flange Standard |
ISO 7005-2 |
|
Size Range |
DN50 - DN1200 |
|
Coating |
Epoxy, Galvanized |
|
Temperature Range |
-30°C to 120°C |
|
Standards |
ISO 2531, EN 545 |
Manufacturing Process
We select quality raw materials. The furnace melts iron completely. We add alloy elements. This creates ductile structure. We cast components precisely. Machines finish flange surfaces. We drill bolt holes accurately.
Media Compatibility
Suitable for potable water, raw water, treated sewage, natural gas, and various industrial fluids within applicable pressure and temperature ranges.
Installation Steps
Prepare foundation properly. Clean flange faces. Place gasket correctly. Align bolt holes. Insert all bolts. Tighten nuts evenly. Test for leaks.
Materials
Pipe body: Ductile cast iron (ASTM A536 / EN GJS-400 / ISO 1083)
Fittings body: Ductile cast iron (EN GJS-400 / ASTM A536)
Flanges: Cast or welded, machined to standard dimensions
Gaskets: EPDM / NBR (for water, gas applications)
Coating: Zinc + epoxy / fusion bonded epoxy (FBE)
Lining: Cement mortar (ISO 4179) / Epoxy (ISO 14628) / Polyurethane
Packaging Details
We wrap flanges separately. Use plastic protection caps. Wooden crates provide security. Steel straps secure loads. Clear labels show information.
After-Sales Service
We provide technical support. Offer installation guidance. Supply spare parts. Respond quickly. Solve problems promptly.
Accessories & Optional Configurations
Flange gaskets: EPDM, NBR, viton in full-face or ring-type configurations
Bolting kits: Complete sets with nuts and washers to match flange drilling patterns
Lining upgrades: Fusion bonded epoxy (FBE) for internal surfaces where higher chemical resistance is required
External coating enhancements: Polyurethane or liquid epoxy for underground or high-corrosion environments
Spigot and socket options: Where flange connections need to transition to push-on joints
Factory pre-assembly: Pipes and fittings can be pre-assembled with gaskets and fasteners to reduce site installation time
