Composite Manhole Cover or Composite Manhole Door is a replacement to old generation of manhole covers that was made of cast iron and etc. The new manhole door generation is made of some special materials that is able to solve companies’ problems with the old manhole door generation.
Composite Manhole Cover is made of polymeric resins and some other chemical materials like Silica fibers, Calcium Carbonate, Color pigment, Peroxide and Unsaturated polyester resin. The result is good resistance from different situations with a reasonable price.
Examinations on composite manhole cover are:
Pressure exam
UV resistance
Measurement of tensile strength and influence of chemical solutions on covers
Wear hard materials
Some advantages of composite manhole covers are:
Also, some composite manhole cover security points are:
Advantages of using new generation of composite manhole covers:
These all make this production to growth fast among other kinds of manhole doors and be a good competitor to old generations of manhole doors.