Many photovoltaic customers often encounter a common problem during on-site installation: once the C-shaped steel exceeds a length of 6 meters, it is prone to slight distortion.
This distortion manifests as: the two ends seem to be aligned, but there is a "skewed middle section", causing the bolt holes and the crossbeam holes not to align properly.
Why does this happen?
On one hand, if the forming roller design is asymmetrical or severely worn, stress differences will be left during the forming process. On the other hand, when there are fluctuations in material thickness or strength, longer materials are more likely to gradually skew after being stressed at one end.
In actual construction, workers often need to make forced corrections or drill secondary holes to make up for it, which not only increases labor costs but also affects the progress. In large-scale power station projects, hundreds of C-shaped steel pieces accumulate and will delay the construction schedule.
So what customers really care about is not "how many meters per minute the equipment can travel", but:
Can the long material over 6 meters after forming remain straight?
Can the hole positions be guaranteed to align once, reducing on-site secondary processing?
These details directly determine the efficiency and cost of the support system installation.