What is Composite Manhole Cover?

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:

• Exam EN124

Pressure exam

• Exam ASTM-154-06

UV resistance

• Exam ASTM 638-10

Measurement of tensile strength and influence of chemical solutions on covers

• Exam ASTM 4060-10

Wear hard materials

Some advantages of composite manhole covers are:

1. More portable than the old generation
2. No Welding anymore and problem in opening the manhole composite cover
3. Different shapes and sizes to fit them everywhere such as coils in cities
4. Different designs
5. Unique architecture & design for specific organization

Also, some composite manhole cover security points are:

• nonconductor so there is no warning for electricity
• dose not transfer heat and thermo
• Low slips and moves when is attached
• Low measure mistakes in design and production

Advantages of using new generation of composite manhole covers:

1. Resistance of being corrosion in different geographic situations
2. Great hydraulic and mechanical resistance in different situations
3. Good chemical resistance
4. Admirable thermal resistance
5. long term usage and perfect durability
6. UV Resistance check to prevent failure
7. Resistance to be in touch with hard materials
8. Shorter delivery time with reasonable price

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.