ISO9001 Certified Double Triangle Ductile Iron Manhole Cover 300x300mm with 26kg Weight for Water Meter Box
This double-triangle ductile iron manhole cover and water meter box provides exceptional durability and security for municipal water systems. Manufactured with premium ductile iron and featuring anti-slip properties, it ensures reliable long-term performance in various applications.
| Clear Opening (mm) | Frame (mm) | Frame Depth (mm) | Weight (kg) |
|---|---|---|---|
| 150 × 150 | 230 × 230 | 100 | 9 |
| 229 × 229 | 310 × 310 | 100 | 19 |
| 300 × 300 | 385 × 385 | 100 | 26 |
| 140 × 115 | 152 × 152 | 75 | 4 |
| 152 × 120 | 170 × 155 | 75 | 1 |
| 380 × 230 | 500 × 350 | 125 | 20 |
| 430 × 280 | 535 × 385 | 105 | 28 |
- Raw Material Selection: High-quality ductile iron for superior strength
- Melting and Spheroidization: Graphite spheroidization enhances material performance
- Casting: Sand casting process ensures high-precision blanks
- Surface Treatment: Sandblasting and spray painting with asphalt or epoxy coatings for corrosion resistance
- Assembly and Inspection: Comprehensive quality checks including appearance, dimensions, and load-bearing performance
SND brings over 20 years of expertise in metal goods manufacturing, specializing in cast iron, steel, stainless steel, and aluminum products. Our comprehensive manufacturing capabilities include sand casting, lost wax casting, lost foam casting, and precision machining, supported by surface finishing and assembly services.
Our ISO9001-certified quality control systems ensure consistent product reliability through comprehensive testing including spectrometer analysis, ultrasonic inspection, magnetic testing, permeability checks, and tensile/yield strength evaluations.
We serve diverse industries including automotive, rail transportation, agricultural machinery, chemical processing, energy, electrical systems, water infrastructure, air compression, and construction applications.
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