In industrial packaging—particularly for chemicals, paints, and coatings—three-piece metal cans must endure extreme conditions: aggressive chemical formulations, internal pressurization, and long-term storage stability. Unlike beverage or food-grade containers, these applications demand superior corrosion resistance, leak-proof sealing, and structural robustness. Meeting these requirements starts not with the can itself, but with the can-making equipment that produces it. Manufacturers like Shin-I Machinery Works Co., Ltd. are rising to this challenge, offering specialized machinery designed explicitly for non-food, high-performance packaging. This article explores the critical design and production considerations for industrial three-piece cans, outlines key equipment selection criteria, and highlights leading global suppliers—including Shin-I—serving this demanding sector.