The advantage of ductile iron manhole cover grate

• Ductile iron manhole cover grate
  

It is made of flat steel and twisted square steel or welded flat steel and flat steel.

Here are some of their characteristics

1, Beautiful appearance, drainage, high strength, specifications and low cost.

2. Anti-theft.

3. Good bearing capacity.

4.Strong drainage capacity.

Two points for attention in installation of ductile iron manhole cover grate:

① : In order to ensure the basic strength requirements, before installing rain grate, cement foundation must be placed.  Then install the rain grate on it.

② : after the installation of rain grate, tighten screws should be installed around it, and cement mortar should be poured at the bottom of the frame to prevent rain grate from falling off for different reasons.