First, the material of the components
1. Steel: Due to the rationality of the market and the introduction of industry policy documents, especially the specific provisions on the material of disc-type scaffolding in the “Safety Technical Regulations for Socket-type Disc-type Steel Pipe Brackets for Construction” JGJ231-2010, the disc-type scaffolding on the market is mainly made of Q355B and Q235B low-carbon alloy structural steel.
2. Castings: The castings of disc-type scaffolding include crossbar heads, inclined rod heads, and U-support nuts. First, compare and check the appearance to see if there are sand holes, cracks, etc. inside. Secondly, look at the weight ratio of the same volume, that is, you can indirectly see the density of the product. The density has a certain influence on hardness and strength.
3. Stamping parts: The steel plate of the stamped disc is the key source of controlling the quality of the disc-type scaffolding. In addition to testing through mechanical experiments, you can also check the inspection report of the scaffolding and look at the specific data to determine the quality of the stamping parts.
Second, processing quality
Many buyers do not pay much attention to the processing quality of the disc-type scaffolding, thinking that as long as the material is qualified, it is qualified, but in fact, the processing quality has a great impact on the quality of the disc-type scaffolding.
It can be seen that the height of the disc-type scaffolding pins in the above picture is different. One possibility is that it is due to the problem of erection method and sequence, and the other possibility is the problem of processing size and accessory quality.
Another key link in processing quality control is quality inspection. If there is no strict quality inspection before leaving the factory, it is bound to lead to unqualified products entering the market.
Post time: Jun-26-2024