What is the A60 fire rating standard? What kind of A60 fireproof material will be put into use?

For the functions of sea containers, such as transporting refrigerated, living or working, etc., it is necessary to carry out modifications to meet the requirements of thermal insulation and fire protection of the container.  Normally, the sea land containers provided by TLS can comply with the A60 standard.
Classification society standard A60 level specific requirements:

1. Steel or equivalent material, the thickness is 4.5±0.5mm.
2. Appropriate anti-flexion reinforcement, where the distance between the aggregates should be about 600 mm.
3. Made of approved non-combustible materials, so that within 60 minutes, the average temperature rise of the backside does not exceed 140℃, and the temperature rise of any point on the backside does not exceed 180℃.

What type of refractory material is A60 fireproof?
The material is required to have a certain rigidity and fire resistance for more than 1 hour, during which time the integrity is maintained to prevent the passage of smoke and flame.
Rock wool and ceramic fiber wool are two different materials, both of which can be used as insulation materials for A60 fire protection but must be approved by the relevant classification society.