不同应用场景对管道连接方式的要求差异显著——从家庭直饮水系统到化工高压管道，从临时维修到长期固定安装，选择合适的连接方式直接影响系统的安全性、密封性和维护成本。

01 Overview of assembled steel structure nodes China has promoted the development of assembled buildings in recent years, and the assembled connection nodes of square steel tube columns and beams have gradually become a research hotspot because of their high efficiency and environmental advantages. Assembled steel structure is different from traditional building structure, it is prefabricated in the factory.