The machines will be well examined in our workshop before these get delivered. We will provide a technician to your factory, which will install the machines if there is a need. The buyer has to pay the travel cost to the technician outside China.
For roof roll forming machines, if the length of product is 5m/piece, working pace is about 10m/min counting the cutting time; If it operates for 8 hours per day, the capacity is about 4800m. Total 950 pieces of 5m length products will be delivered.
First, add polishing or greasing oil on the cutter blades, if it is still trmbling, try to release the screws a little bit.