¿Cuál es el espesor habitual del recubrimiento de las bobinas de acero galvanizado con recubrimiento de color?
Conventional building use (2/1 structure: front double coating, back single coating, the most mainstream in the market)-Front total coating (primer+topcoat): ≥ 20 μ m (minimum requirement of national standard), market standard polyester PE: 20-25 μ m-Primer: about 5 μ m-Topcoat: 15-20 μ m-Back coating (back paint): 5-8 μ m (single coating, mainly rust proof, not…