What's the difference between a ductile iron well and a composite resin manhole cover?
Composite manhole cover has the advantages of low cost, light weight, anti theft, the advantages of reducing the noise in city; corrosion protection, high performance composite resin covers SMC sheet products, acid, alkali and salt corrosion, rust and so on 50 or 150 DEG C for use in harsh conditions.
Ductile iron wells: cast iron, light weight only about 1/3 of the easy transportation, installation and maintenance, greatly reduce the labor intensity of workers, natural security: according to the needs of customers is also equipped with anti-theft lock structure, to achieve this property.
The strength of nodular cast iron well is high compressive strength, flexural strength, impact strength and toughness. The manhole cover does not occur after long-term use, the product will be crushed and damaged, can completely eliminate the "black hole city" accident, beautiful appearance, adjustable surface pattern design, bright colors and beautify the city environment, easy to use.
