[China Aluminum Network] Notice on the maintenance of aluminum alloy doors and windows after the completion of the construction of aluminum doors and windows project.
Non-tapping screws are machine Screw, the pieceworker to be fastened must be tapped with taps in the screw hole in advance to match the screw threads.
The difference between tooth screws and other screws depends on whether they can be used together with nuts. Tooth screws can be used with nuts. And relative to the screws of other teeth, there are self-tapping screws. The nut of this kind of screw has no bow teeth. As for the standard teeth and fine teeth are only different pitch, it is the nut of the machine screw
Hex Machine screw,pan machine screw,flat machine screw,truss machine screw,Hexagon socket screws Shenzhen Lanejoy Technology Co.,LTD , https://www.szbrassnuts.com
(1) The project project department shall sign the warranty maintenance agreement with the owner or the property management company in time after the acceptance of the project.
(2) During the warranty period, regular on-site inspections, visits to users with sudden changes, and return visits are made and service records for return visits are made.
(3) Any problems caused by quality problems or construction of aluminum doors and windows during the warranty period are the responsibility of the company for free repairs. If the doors and windows are subjected to man-made damages, the maintenance department will be responsible for the cost of repairs.
4) During the warranty period, the project manager organizes the original project personnel to actively service the delivered project and listen to the customer's opinions on the project. Fill in the quality report and design department and the quality inspection office for record.