First, the classification of disc-type scaffolding models
The models of disc-type scaffolding are mainly divided into standard type (type B) and heavy type (type Z) according to the “Safety Technical Standard for Socket-type Disc-type Steel Pipe Scaffolding in Construction” JGJ/T 231-2021.
Type Z: It is the 60 series commonly mentioned in the market. The vertical pole is directly 60.3mm, and the material is Q355B. It is often used for heavy support, such as bridge engineering.
Type B: It is the 48 series, with a vertical pole diameter of 48.3mm and a material of Q355B. It is often used in housing construction projects.
In addition, according to the connection method of the disc-type scaffolding pole, it is divided into two forms: outer sleeve connection and inner connecting rod connection. At present, the 60 series disc-type scaffolding on the market generally adopts an inner connection, while the 48 series disc-type scaffolding is generally connected by an outer sleeve.
Second, the specifications of the disc-lock scaffolding
The main rods of the disc-lock scaffolding are: vertical rods, horizontal rods, diagonal rods, and adjustable supports.
Vertical rods: The distance between the discs is 500mm, so the specification modulus of the vertical rods is 500mm. The specific commonly used specifications are 500mm, 1000mm, 1500mm, 2000mm, and 2500mm, and there are also bases of 200mm and 350mm. Take the 48 series disc-locked vertical rods as an example, the thickness of the disc is 10mm, and the material is Q235; the wall thickness of the main material of the vertical rod is 3.25mm, the material is Q355B, and the wall thickness of the outer sleeve is 5mm, and the material is Q235.
Horizontal rod: The model specification modulus is 300mm. Conventional models are 300mm, 600mm, 900mm, 1200mm, 1500mm, and 1800mm. (Note here that the so-called model 900mm means that the center distance between the two side vertical poles connected by the crossbar is 900mm. The actual crossbar length is not 900mm, but about 850mm)
Take the 48 series buckle crossbar as an example. The thickness of the pin is 5mm and the material is Q235; the wall thickness of the main material of the crossbar is 2.75mm and the material is Q235.
Adjustable upper and lower supports: The length of the adjustable upper support screw is 600mm. When in use, the exposed length of the screw is strictly prohibited to exceed 400mm; the length of the adjustable base screw is 500mm. When in use, the exposed length of the screw is strictly prohibited to exceed 300mm.
The thickness of the support plate of the adjustable upper and lower supports is 5mm, the side length of the base is 100mmX100mm, and the side length of the upper support is 170mmX150mm, of which the height of the upper support steel plate is 50mm.
Post time: Feb-06-2025