Matches Ductile Iron Pipe Properties
The Ductile Iron Pipe Connector is made specifically for ductile iron water mains. Ductile iron pipe is the most common pipe material in city water systems. Traditional socket rubber ring joints work well for new installation. But for repairs and partial replacement, you need faster connection methods. Our connector is designed for ductile iron pipe OD and material properties. It is the ideal connection product for network upgrades and emergency repairs.
The connector bore and seal groove dimensions match national standard ductile iron pipe ODs. The sealing ring uses the same EPDM material as standard socket joints. This ensures material compatibility. The housing uses QT450 ductile iron. This matches the pipe material exactly. The housing and pipe become one unit with the same electrical potential. There is no risk of galvanic corrosion. Installation is simple and needs no heavy equipment. It works well in tight spaces like valve pits.
We use QT450 ductile iron as our main raw material. This material has good casting properties, good machinability, and good wear resistance. It has some elasticity and resists sudden temperature changes. Our foundry controls spheroidization and inoculation carefully. Every heat is tested for nodularity. The housing surface is smooth and free of porosity, sand holes, or cracks. Wall thickness is over 5 mm.

Used in Major Network Upgrade
A water group in northern China was upgrading old ductile iron mains. They wanted to reduce shutdown time and excavation area. They used our Ductile Iron Pipe Connector instead of traditional socket joints. The project had over 30 connection points. Each connection took one hour instead of four hours. The total shutdown time dropped by 70%. Residents had much less disruption.
We offer a 10-year warranty. Each product comes with a material test report and a hydrostatic test report. We stock DN80 to DN400 sizes for emergency orders.

Technical Parameters
|
Parameter |
Specification |
|
Application |
Ductile iron pipe connections and repairs |
|
Working Pressure |
≤1.6 MPa |
|
Housing Material |
QT450 ductile iron (matches pipe material) |
|
Sealing Material |
EPDM rubber |
|
Bolt Grade |
8.8 high-strength steel |
|
Surface Treatment |
Epoxy powder coating |
|
Diameter Range |
DN80 – DN400 |
|
Material Match |
Same as pipe – no galvanic corrosion risk |
|
Warranty |
10 years |
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