SCAFFOLDING TUBE CLASSIFICATION

Domestic steel pipe scaffolding material have steel tubular scaffolding, steel scaffolding tube bowl button, socket type steel scaffolding, gantry scaffolding. There are all kinds of scaffolding, hanging scaffolding pick scaffolding pipes and other materials. Its material and construction to proceed with the case, can be roughly divided as follows:

Divided by material rod

1). Single standard steel scaffolding. It only uses a standard steel pipe. Such as steel tubular scaffold, only Ф48 × 3.5 welded pipes.

2). A variety of specifications of steel pipe combinations scaffolding. It consists of two or more different sizes of steel pipes, such as gantry scaffolding.

3). In steel-based scaffolding. That is mainly steel, and other types of scaffolding steel rod member constituted supplemented. As provided channel backwater or scaffolding base, there are connecting plate pick scaffolding.

Cuplock steel scaffolding when used in the steel rail as a “single pipe scaffolding.” When using steel side rails ride for the “steel-based scaffolding.”

By way of transfer of the vertical force between the bar and the Pole division

1). By the contact surface friction force transmission. Namely by frictional contact surfaces at the node after pressing reaction force to support the rail loading and pass pole, such as the role of fasteners, bolts through positive pressure on the friction force;

2). By weld force transmission. Most of the bar and the Pole socket coupling is in this way, the door frame also belong in this way;

3). Direct pressure force transmission. This way is more common in the bar resting on top of the scaffolding pole;

4). By the pin shear force transfer. That is with the pin through the crossbar and uprights vertical coupling plate holes to achieve coupling, the pin-sided by the shear force. This approach in the bar and pole coupling has been rare.

In the pole with pole coupling, there are three kinds of power transmission mode:

1). Docking socket supporting force transmission. That butt up and down the pole, using connecting rods or intubation to ensure docking in good condition;

2). The pin connected to the pin shear force transfer;

3). The fastener engaging force transmission connection. That external thread of the inner tube and the outer (jacket) internal thread engaging force transmission tube. Wherein the latter two pole power transmission mode used for adjusting the height requirements of the connection.