The arched frame of the roof natural ventilator skeleton has three methods: stretch bending, top bending, and roll bending. Mcwell adopts the stretch bending method.

Stretch bending is the most ideal bending method for the arched frame of natural ventilator. Mcwell's stretch bending machine is a highlight of the company. It is specially manufactured for the continuous rooflight. Mcwell’s stretch bending machine is based on natural ventilation. Its working habits are most suitable for the characteristics of the profile frame. (The profile frame is generally thin-walled rectangular tube or angle steel, and the wall thickness is generally between 2, 3, and 4 millimeters.) Our stretch bending machine is characterized by the workbench in the middle of the equipment, the two arms are movable, and the two arms use 200,000N. The force (200,000 Newtons force) (20 tons force) pulls the two ends of the profile, tightens the profile, and then leans against the mold, so that the drawn workpiece has a high precision, and the error of different workpieces can be ignored, and The workpiece is smooth and continuous strength is high.

The precision of the workpiece made by top bending and roll bending is poor, especially the precision of the rolled workpiece is very different, it will be pressed with grooves, and even fracturing the profile, the skeleton deformation is about 50-100mm, deformation Large, destroying the mechanical properties of the workpiece.