The Difference of C-Z Shape Purlin Roll Forming
- a. Because of the moment of inertia of Z purlin weak axis is large than C purlin, the globality is better than C purlin.
- b. The connection of Z purlin need firm joint, so cause the continuous purlin, while the C shaped purlin count as simply supported purlin.
- c. Z purlin is small than C purlin, which can save materials, decrease the cost, however,the installation and transporation is complicated.
- d. C purlin is suit for the roof that is gentle slope; while the Z purlin mainly apply in gradient of the roof is more than 1/4.
The z shape purlin roll forming
The c shape roll forming