Steel caster wheels are mostly used as industrial caster wheels,because of it's strong structure and heavy load capacity. Such as trolley caster
wheels,equipment caster wheels.
Beside of above purpose,steel caster wheels can be also used as heat resistance caster wheels. As we know regular fiberglass caster wheel can be only bear 250 ~ 280 degree Celsius. But in somewhere may have even move temperature,like burning house,and cast iron workshop.Where the temperature can reach 1000 degree Celsius. And steel caster wheels can bear this temperature.
However just have steel caster wheel is not enough,we also need grease oil which can also bear 1000 degree Celsius.