How to Choose The Right Gram Weight of Chopped Strand Mat for Truck Compartment Panels

Refrigerated truck compartment boards require high rigidity, anti-water penetration and stable low-temperature resistance. The gram weight of chopped strand mat is the most critical raw material index affecting finished board quality. We summarize the weight selection standard based on thousands of FRP compartment factory cooperation cases.

1. 100–200 g/m² CSM

   Thin surface layer mat, used as surface veil backing. It smooths the surface of FRP boards, avoids fiber exposure, and reduces paint consumption. Cannot be used as structural reinforcement layer alone.

2. 300 g/m² CSM

   Most universal specification for light-duty refrigerated van panels. Balances flexibility and structural strength, suitable for 3–6mm thin compartment side plates, widely used for small delivery refrigerated trucks.

3. 450 g/m² CSM

   Best-selling model for medium and heavy truck box boards. High tensile strength, excellent anti-cracking performance after resin curing, adapts to long-distance transportation bump vibration. Our factory’s 450g powder binder mat is the mainstream material for domestic and Southeast Asian compartment manufacturers.

4. 600 g/m² Heavy-Duty CSM

   For thick structural plates, floor bearing plates of large cold storage trucks, container FRP liners. High fiber content, strong load-bearing capacity, reduces the number of laminate layers and shortens production time.