Do I need CCC certification for ventilated GRP?
Usually fiberglass, air conditioning, ventilation pipes will have insulation requirements, the general need not heat preservation.
Of course, there is also used for air conditioning duct glass fiber reinforced plastic pipe, the thickness needs at least 25MM, lined with EPS insulation foam.
The air duct is made of 10MM thick fiberglass pipe, and the design of the air duct is wrong. The FRP pipe is developed for fire control and smoke exhaust.
