Common scaffolding jack is u-shaped, the construction tubular type steel pipe scaffold safety technical regulations (JGJ130-2011) "the adjustable bracket support compression bearing capacity design value should not be less than 40 kn, the plate thickness should be not less than 5 mm", 30 kn in general computing. It's not how much the scaffold can withstand, but how the scaffolding will be calculated based on how much load it has. It needs to be calculated.

The specification of safety technical specifications for steel pipe scaffolding for construction construction shall be specified. The design value of double -couplers (anti - slip) bearing capacity is 3.2 KN. The bearing capacity of right Angle fastener and rotary scaffolding coupler (anti-slip) is 8KN. The roof of the building is different from each other, the standard is called: adjustable base can be adjustable.

The pole is a screw, and the screw can be inserted into the steel tube used in the building, and the screw has a regulating nut. The upper tray is grooved, with steel plate folding and forming, the lower bottom plate is the horizontal type contact with the ground. The supporting plate and the screw are fixed by welding method, and two small iron plates are commonly used for welding. Use the nut on the screw to master the height of the support. It is widely used in engineering construction, bridge construction and scaffold mixing scaffold. Make the platform flat and improve the quality of the project.

Upper top, the use of the steel tube in contact with square wood, can make each support point can balance the force. Below the scaffold, use under the scaffolding, the use of the uneven ground can provide a stable scaffold to stabilize! The top of the hollow screw top is a kind of construction screw top, which is the same function as the construction screw, which is also the height of the adjustment support in the construction, so that the template can be in contact with the component.

Purpose: to adjust the height of the support in construction, so that the template can meet the components. In the production process, the hollow wire screw cannot be used in the common thread rolling machine (commonly known as a screw machine). The hollow screw is relatively high and the product is more precise. Three spindle thread rolling machine is needed to suppress. Using a common screw machine is likely to crush the hollow screw tube.