We will push out a new large diameter helical coil bike rack, whose diameter of helical coil is 762mm, its length is 1060mm. Its vertical part can be inserted into the ground and firmly fixed to secure the whole bike rack.
It’s difficult to bend so large helical coil and finish after-welding process, because the part with the coil must be welded and treated without weld spots.
This helical coil must be customized and is mainly used for subway.