What distinctive feature do the ends of ton containers have?

Ton containers are specifically designed to safely transport and store compressed gases like liquefied gases or other hazardous materials. One distinctive feature of ton containers is that their ends are constructed with a convex-on-concave design. This structural choice is integral for the overall strength and durability of the container, allowing it to withstand high pressure while minimizing the risk of failure during transport and storage.

The convex design helps to distribute stress across the surface of the container, thereby enhancing its integrity when under pressure. Additionally, this design can aid in the efficiency of space utilization when stacking multiple containers, as they can nest or fit together better compared to other shapes. Such structural properties are essential for ensuring the safety and reliability of ton containers in handling hazardous materials.