Cast iron manhole covers a wide range of applications on the road, so how do we detect the quality of the covers? Today, we will introduce you to Hua Kai casting.
Detection techniques for well bore of cast iron manhole cover:
1. check the manhole cover: it must be strictly based on the corresponding inspection scale of the country.
2. the surface of cast iron manhole covers: there is no significant casting defect, and the casting pattern is clearer.
3. flatness inspection of cast iron manhole cover: the time of inspection can be accepted by special fixture.
4。 Diameter Inspection: When inspecting the diameter of the nodular cast iron well cover, special things should be accepted。 After controlling the branch river of the cast iron well cover in the scope of the size of the well cover, the depth requirement is 40mm。 The time of inspecting bolt holes should be carried out one by one with special tools。
5. check the spray paint results of cast iron manhole covers.
6. Testing the combination result of cast iron well cap, the casing cast iron well cap will not swing and sound after placement and utilization, and the common of well cap and well frame is not above 1 mm.
The above content is provided by Shandong Ductile Iron Well Cover. If you want to know more about it, you can pay attention to our website: http://www.kpp647.com. There is more information about professional knowledge in the website. I hope it can help you to a certain extent. If you need to buy, please call us!