Mechanical Jack is also known Screw Jack and can be used upside down. The mechanical jack widely used for maintenance of railway vehicles, bridge installation, mining, construction support, and lifting of vehicles and equipment, has the advantage of simple structure, easy to use, safe and reliable, mechanical jack which is a widely used lifting tool.
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Mechanical Jack Mechanical Jack,Steel Rack Mechanical Jack,Mechanical Lifting Jack,Mechanical Car Screw Jack Hebei Liston Lifting Rigging Manufacturing Co., Ltd. , http://www.liftingriggingfactory.com
With the installation of the canopy letter box, the canopy and the wall must be installed firmly. The outward drainage gradient should meet the requirements of this code; the junction between the canopy and the wall should be waterproofed.
What should pay attention to the installation and use of residential letter boxes?
The following conditions should be met: the relevant design documents are complete, and they have been reviewed; the special construction plan has been approved; the quality of the letter box is complete, the acceptance is qualified; the site conditions can meet the letter box construction requirements; embedded parts, embedded pipelines And other related facilities meet the requirements of the design documents and have passed the inspection and acceptance. When the letter box is installed, procedures should be handed over and protective measures should be taken for the corresponding parts of the completed project. When installing a letter box on an existing building, a reliable installation method should be selected according to the construction age and the structure of the building.