Beijing Huadu Bora Building Boards Co.,Ltd.

Characteristics of Sandwich Panels

PUR Panel	Metal Covering	Options	Tolerance
Quality standard: JC/T868－2000 Foam density (kg/m3): 30-40 Closed cells content (%): ≥92 Working temperature(。C)：－185－－+120 Thermal conductivity(W/m.K)： ≤0.027 Flexural strength(kg/cm2)： 1.7-2.2 Tensile strength(kg/cm2)： ≥2-2.8 Fire resistance： B2-B1 Blowing Agent: CFC Free	Colour galvanized steel Quality standard; GB/T12754 Steel thickness: 0.4-0.8mm Steel base: heating galvanized Zinc weight: ≥180g/m2(both sides) Steel coating options: * Polyester resin * Polyester silicone * PVDF * PVC	♦　 Aluminium alloy ♦　 Stainless steel ♦　 Dampproof paper ♦　 Polyisocyanurate  foam	Thickness of coverings: according to Trade Regulations Thickness of panel: ±1.5mm Length: ±5mm Off the square: Max 5mm
EPS Panel	Metal Covering	Options	Tolerance
Quality standard: GB10801－89 Foam density (kg/m3): 15－18 Thermal conductivity (W/m.K):≤ 0.041 Compressive strength (kg/cm2):≥ 60 Oxygen index: ≥30%	Colour galvanized steel Quality standard; GB/T1275 Steel thickness: 0.4-1.0mm Steel base: heating galvanized Zinc weight: ≥180g/m2 (both sides) Steel coating options: * Polyester resin * Polyester silicone * PVDF * PVC	♦  Aluminium alloy ♦  Stainless steel	Thickness of coverings: according to Trade Regulations Thickness of panel: ±2.0mm Length: ±5mm Off the square: ≤6mm