I believe you are not unfamiliar with nodular cast iron manhole covers, it can be seen everywhere in the street, but do you know what the grade of nodular cast iron manhole covers is? Next Shandong Ductile Iron Well Cover Manufacturer will summarize the types of Ductile Iron Well Cover for you, hoping to help you!
Ductile iron well cover grade mark setting occasion:
(1) Greenbelt Roadway, Bicycle Road or Pedestrian Walkway with Light Vehicles Prohibited
(2) Road or parking space for vehicles of Class 10 and below
（3）重型 机动车通行的道路或停放场地井盖是用来掩盖道路上或家中深井的防御物,用来防止行人或物体坠落。一般分为圆形和方形,在市区的路政方面,一般采用圆形,因为 圆形的井盖不易倾斜,能够较好的保护好行人和车辆的安全。
(3) Shaft covers are used to cover up deep wells in roads or homes and to prevent pedestrians or objects from falling. Generally divided into circular and square, in urban road administration, generally use circular, because the circular well cover is not easy to tilt, can better protect the safety of pedestrians and vehicles.
Ductile iron covers are mainly made of ductile iron。 The quality of the covers is related to the spheroidization rate。 The common paint used to treat castings is anti-rust asphalt paint。 Of course, the surface of nodular cast iron well cover is also treated by spraying anti-rust asphalt paint。 Ductile cast iron well cover has one advantage, because of its high strength and good toughness, it is 30% lighter than the same type of grey cast iron well cover。
In summary, the above is provided by Shandong Ductile Iron Well Cover Manufacturer. To learn more about Ductile Iron Well Cover, please pay attention to our website: http://www.kpp647.com. Thank you for your support!