In order to ensure the material quality and welding quality of expansion joint of spiral case, and the safety and reliability of hoisting equipment, the practical, scientific and reasonable installation technique is key and essential.
In order to ensure the material quality and welding quality of expansion joint of spiral case, and the safety and reliability of hoisting equipment, the practical, scientific and reasonable installation technique is key and essential.
摘要为了保证蜗壳凑合节瓦片的下料质量、吊装设备安全可靠和焊接质量，切实可行和科学合理的安装工艺将是极其关键的一项工作内容。