Steel grating step plates refer to the steel grate covers placed over channels such as storm drains, cable trenches, and other ditches, primarily for drainage purposes. They come in three main types: concrete covers, cast iron covers, and steel grate covers. Due to their low cost, aesthetic appearance, wide variety of sizes and specifications, high impact resistance, and high load-bearing capacity, steel grate step plates have become a commonly used choice for channel covers.

Manhole covers, also known as channel covers or grating covers, are made by spot welding steel grating panels, offering easy installation, light weight, excellent load-bearing capacity, good impact resistance, flexibility over breaking, and high drainage volume. After hot-dip galvanizing, they are aesthetically pleasing and durable, providing corrosion and rust resistance, and possess superior advantages over cast iron covers. The use of hinge connections makes them easy to open and theft-resistant.