copper conical fermenter heat-insulating layer and the protective layer
Insulation materials require low thermal conductivity, low volume, low water absorption, and non-flammability. Commonly used thermal insulation materials include polyamide resin, self-extinguishing polystyrene plastic, polyurethane, expanded perlite powder and slag wool. Insulation thickness is generally 150mm-200mm. The outer protective layer generally uses a 0.7mm-1.5mm thick aluminum alloy plate, a tinplate, or a stainless steel plate of 0.5mm-0.7mm. Recently, the corrugated plate is more popular.
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