Every three months, the hardware at the corners of broken bridge aluminum doors and windows, aluminum clad wood doors and window frames shall be inspected, the bolts shall be tightened in time, and the damaged parts shall be replaced. The vulnerable parts of positioning shaft pin, wind brace and hinge aluminum clad wood doors and windows shall be inspected frequently and lubricated regularly to keep them clean and flexible. Sealing wool and glass glue are the key structures to ensure the sealing and thermal insulation of aluminum cladding windows. If they fall off, they shall be repaired and replaced in time.

Products Show