hard chrome plated steel polished hollow bar

Hard-chromed steel hollow bars are commonly used in applications that require a hih level of durability, corrosion resistance, and smoothness. These bars are made from steel and then chrome-plated to create a hard, wear-resistant surface. 

The key points about hard-chromed steel hollow bars:

1. Typically made from carbon steel or alloy steel.

2. The exterior is chrome-plated, which provides a very hard and durable finish.

3. Ofetn used in hydraulic cylinders, piston rods, machine tools, and other industrial equipment where low friction and high wear resistance are required.

4. Avaiable in various sizes and lengths to fit different applications.

5. High tensile strength, good corrosion resistance, and a smooth surface finish.