The fastener-type scaffolding steel pipe commonly used in China is made of cast iron, and its mechanical properties should conform to the “Steel Pipe Scaffolding Fastener-type Steel Pipe Scaffolding” (GB15831-2006). The material is not less than KT330-08. At present, there are many varieties of fastener-type steel scaffolding on the market. , The quality is uneven. Some manufacturers use gray cast iron and channel steel to make fastener-type scaffolding steel pipes, whose mechanical properties are difficult to meet the requirements and are not produced by national standards. Some units are eager to make cheap steel pipe scaffolding with low-cost and low-quality fasteners into the construction site. Also, some units are negligent in management, and the fastener-type steel pipe scaffolding screws are corroded and the slippery wire is still used, resulting in the tightening torque not meeting the specified requirements.
Fastener-type scaffold steel pipes are intermediate connecting parts that connect rails and sleepers. Its function is to fix the rail on the sleeper, maintain the gauge and prevent the rail from moving vertically and horizontally relative to the sleeper. On the track of the concrete sleeper, due to the poor elasticity of the concrete sleeper, the fastener-type steel tube scaffold needs to provide sufficient elasticity. For this reason, the fastener-type steel pipe scaffold must have sufficient strength, durability, and certain elasticity, and effectively maintain the reliable connection between the rail and the sleeper.
Also, the fastener-type scaffolding steel pipe system is required to have fewer parts, simple installation, and easy disassembly. In addition to cast iron fastener type scaffold steel pipes, there are also steel fastener type scaffold steel pipes. Steel fastener steel scaffolding is generally divided into cast steel fastener steel scaffolding and steel stamping, hydraulic fastener steel scaffolding. The production process of cast steel fastener steel scaffolding is roughly the same as that of cast iron, while steel stamping and hydraulic fasteners The steel scaffolding is made of 3.5-5mm steel plate through pressing and hydraulic technology. Steel fastener-type steel pipe scaffolding has various properties such as breaking resistance, sliding resistance, deformation resistance, anti-falling resistance, rust resistance, etc.
Post time: Jul-29-2020