桥式起重机的运输、安装、调试和维护费用通常会占到总成本的一部分，但具体所占比例会受到多种因素的影响，包括起重机的类型、尺寸、设计要求、安装位置和运行环境等。

In a specific project, the following factors may affect the proportion of overhead crane transportation, installation, commissioning and maintenance costs:

Single-girder cranes usually refer to single-girder bridge cranes. The main girders of electric overhead traveling crane bridges mostly use I-shaped steel or a combined section of steel and steel plates. Lifting trolleys are often assembled with chain hoists, electric hoists or hoists as lifting mechanism components.

Bridge cranes can be divided into single-girder and double-girder bridge cranes according to their categories.

General bridge crane General-purpose bridge cranes are bridge cranes that work in general environments, and their pick-up devices are hooks or grabs or lifting electromagnets (electromagnetic chucks), or two or three of them are used at the same time

Insulated Bridge Cranes Insulated bridge cranes refer to cranes that work in the environment of smelting workshops of non-ferrous metals such as electrolytic aluminum, magnesium, lead, zinc, and copper.