PM 1/20 RM | Class 1 20mm Base Course which is suitable for upper layers of high to medium traffic roadways |
PM 2/20 RG | Class 2 20mm Sub-Base Course which is suitable for sub layers of roadways |
PM 3/20 RG | Class 3 20mm Sub-Base Course which is suitable for all lower layers of roadways |
PM 1/40 RM | Class 1 40mm Base Course which is suitable for upper layers of high to medium traffic roadways |
PM 2/40 RG | Class 2 40mm Sub-Base Course which is suitable for sub layers of roadways |
PM 3/40 RG | Class 3 40mm Sub-Base Course which is suitable for all lower layers of roadways |