Hot-dip galvanizing is the go-to defense for outdoor distribution enclosures. Pre-galvanized materials help, but box seams require post-welding dipping. Smart fabricators design drain holes to prevent trapped immersion solutions that become corrosion starters. Sealing performance: It directly determines the protection level Outdoor distribution boxes typically require ingress protection (IP) ratings of IP54, IP65, or higher to ensure adequate environmental resistance. Achieving reliable waterproofing necessitates continuous, uninterrupted welding along. How to MIG Weld a Box: This instructables details how to MIG weld a box made out of old scrap metal. Here are the recommended steps to achieve them: Adapt Welding Procedure to Material Thickness: Ensure MIG or TIG welding is. To build a high-quality metal container, start by cutting your steel sheets with precision, deburring the edges, and using magnetic squares to maintain perfect 90-degree angles during tack welding.