1. The outer casing is cast aluminum alloy ZL102. Adopting one-time die-casting process, the product has smooth surface, beautiful appearance, high density of internal structure of metal, no defects such as bubbles and blisters, strong impact resistance, good explosion- proof performance, and permanent permanent “Ex” explosion-proof mark on the product.
2. After the surface of the product is processed by high-speed shot blasting and other series of processes, the a...