The ductile iron manhole cover is fixed to avoid displacement

The ductile iron manhole cover is fixed to avoid displacement

         Ductile iron manhole covers are made of medium nodular cast iron QT500-7 material, which makes the manhole cover have strong compression resistance, bending resistance, impact resistance, heat resistance, cold resistance, wear resistance, acid and alkali resistance, aging resistance, and not easy to deform Features.

On the outer ring of the well cover, a square groove protrudes. The open ring at the inner wall of the well cover is connected to the well cover through the fixed shaft of the well seat. The inner wall of the other end is fixed with a pin body to prevent theft. When the well cover is opened and placed at 90 degrees, it can be taken out. The manhole cover is lowered, which is convenient for construction. The built-in lock adopts nylon bushing, which is not rusty, and is equipped with a special tool to open it, which is stable and reliable. The surface of the ductile iron manhole cover adopts a raised 3mm pattern, which has a good anti-skid effect. Four riveting bolt holes are reserved in the well ring, which are evenly distributed at 90 degrees. Each set uses 4 ground anchor bolts, which avoids the displacement caused by mechanical rolling during the road construction process, and plays a certain role in preventing theft .

The ductile iron manhole covers we usually see on the road have been tested for performance, we can safely press over them without worrying about whether they will suddenly fall down, but I still want to remind everyone that if there is a subsidence When the ductile iron manhole cover is in bad condition, it is recommended to drive around to avoid unexpected situations and make people caught off guard.