介绍了用于工业和工厂起重机、起重设备和其他物料搬运设备的结构钢焊接件的设计和制造要求。还包括修改、焊接修复的要求

Presents the requirements for the design and fabrication of constructional steel weldments that are used in industrial and mill cranes, lifting devices, and other material handling equipment. Requirements are also included for modification, weld repair