Class A and Class B steel conduits are two types of electrical conduits commonly used in construction projects. While both types are made from steel, there are some differences in their design and characteristics.
Class A steel conduits have a thicker wall and are generally more heavy-duty than Class B conduits. They are designed for use in areas where the conduit may be exposed to more physical stress, such as in industrial or commercial settings. Class A conduits are also typically used for applications that require higher levels of ingress protection, such as outdoor installations or in areas where moisture or dust is present.
Class B steel conduits, on the other hand, have a thinner wall and are usually less heavy-duty than Class A conduits. They are commonly used in areas where the conduit will not be subjected to significant physical stress, such as in residential or light commercial applications. Class B conduits are also used for applications that do not require high levels of ingress protection.
In terms of cost, Class A conduits are generally more expensive than Class B conduits, due to their thicker wall and heavier construction. The higher cost of Class A conduits may make them less desirable for certain applications where cost is a concern.

