1. Literally, Z-shaped steel purlins and C-shaped steel purlins are different

Z-shaped steel is a type of steel that looks like a "Z". As the name suggests, C-shaped steel is a type of steel that looks like a "C". Although they are all automatically processed and formed, their appearance is still very different.

2. The section of Z-shaped steel purlin is different from that of C-shaped steel purlin

Compared with the Z-shaped section, the mechanical properties of the C-shaped section are quite different, and the connections with the rigid frame are mostly bolted hinges. Simple brackets must be considered in the calculations. Therefore, except for special joints such as door and window openings, Z-shaped sections should be given priority.

3. The forming angles of Z-shaped steel purlins and C-shaped steel purlins are different

C-shaped steel purlins are 90 degrees, and Z-shaped steel purlins are about 60-75 degrees. Therefore, when using purlins on a roof with a certain slope, the angle of the purlins should be considered in combination with stress knowledge. Z-shaped steel can make full use of its bending resistance. Z-shaped steel is suitable for shelving purlins with a large slope, and C-shaped steel can be used for wall purlins and roof purlins with a small slope.