SPCC (Japanese standard), DC01 (European standard) or Q195/Q235 (national standard) cold-rolled steel plates are preferred for rural lighting electrical Ready Board Box in Africa; The thickness of the outdoor box should not be less than 1.5mm, and small switch boxes can be ≥ 1.2mm. 1. Brand selection - SPCC: universal cold-rolled plate, with a smooth surface and easy welding and bending, suitable for outdoor boxes, most commonly used in African projects. -DC01: European standard universal grade, high dimensional accuracy, good corrosion resistance, suitable for harsh environments. -Q195/Q235: National standard carbon steel, yield strength ≥ 235MPa, low cost, sufficient strength. -Do not use low strength Q195 or stamping grade SPCD/SPCE to avoid insufficient rigidity. 2、 Thickness requirement - Outdoor main box body: ≥ 1.5mm (GB7251.1-2017), resistant to wind and sand, deformation, and IP54 protection. -Small switch box (＜ 400mm): ≥ 1.2mm, meeting mechanical strength requirements. -Landing/large box (≥ 600mm): ≥ 2.0mm, anti overturning and collision resistant. -Internal partition: ≥ 1.0mm, ensuring stable installation of components. 3、 Key points for environmental adaptation: African rural areas are prone to sandstorms, high temperatures, and high humidity, requiring: 1 Plate phosphating+electrostatic spraying (film thickness ≥ 60 μ m), salt spray ≥ 72 hours. two Box IP54, rain and dust resistant, suitable for outdoor exposure and rainy season. three Preferred 1.5mm SPCC, balancing cost, strength, and weather resistance. 4、 Summary - Brand: SPCC/DC01/Q235 (SPCC is preferred). -Thickness: outdoor box ≥ 1.5mm, small box ≥ 1.2mm. - Surface: anti-corrosion treatment, protection level IP54.