a, general roof load, C purlin calculation difficulties or calculated the results need to choose a large C purlin, consider using Z purlin.( CZ purlin roll forming machine)

b,Area with large basic wind pressure, purlin calculation is often controlled by the wind suction force at this time, when it is difficult to calculate with C purlin can also choose Z purlin.(CZ profile roll forming machine)

c. It is recommended that Z purlins be used when the roof panels are concealed panels and the basic wind pressure at the project site is high. This is because I have doubts about the reliability of the connection between the concealed buckle plate and the purlin, and I am afraid that the concealed buckle plate will be sucked off under the action of larger wind.( Steel frame roll forming machine)

In general, C purlins are used when the slope of the roof is small and Z purlins are used when the slope is large.

In terms of stress performance, Z-beam is better than C-beam, but for the convenience of construction, C-beam is still generally used for wall and gable purlins.( CZ-shaped roll forming machine)

Flow chart of CZ purlin steel framing roll forming machine:

Hydraulic decoiler-Guiding--Roll forming machine--Hydraulic punch stands--Hydraulic cut--Out table

Fast Speed Multi-Punching Intelligent Computer-Controlled CZ Roll Forming Machine
Web size	80-300mm
Flange size	40-80mm
Small flange	15-20mm
Z angle	90°/45°
Hydrauic punch	Allowed
Control panel	Computer

This line is much smarter than the traditional PLC controlled line. With traditional PLC control, you need to manually enter the length position of each punch, which is suitable for cases where there are fewer holes, or where the punch combination is simple. This line is controlled by using an intelligent computer, which can transfer all the variables that need to be produced, including length, width size, height size, punching position, etc., to the computer by USB, saving the operator's operation time.

Pictures of CZ purlin steel frame roll forming machine:

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