When the pavement surface has occurred to cracking, then we’d better repair it by seal coating. Shanghai Doan machinery Technology Co., Ltd, are a professional supplier of the road machinery, especially for the crack sealing series.
Through using our machine crack sealing GD5x-120/400J/350/500, then it can be perfect and fast to repair the crack. When operating, at the back side of hot-melt kettle is equipped with the sealing spraying gun to heat the chamber, and feeding pump is at the operation handle, easily operated. The heating system can be hot melt sealant from the bottom to upper, to double heating to reduce preparation time.
