供暖系统故障。水管工正在修理锅炉。维修工正用扳手拧紧供水管的螺母。供应水和防冻液到家庭供暖系统的管道

dent or breakdown in the heating system. Preparing and testing the heating system for the winter season. A plumber is repairing a boiler. A close-up of a maintenance worker, a handyman, tightening a nut onto a water pipe thread with a wrench. A break in the water and antifreeze supply pipe to the home's heating system. High quality 4k footage.

光厂(VJshi)视频提供供暖系统故障。水管工正在修理锅炉。维修工正用扳手拧紧供水管的螺母。供应水和防冻液到家庭供暖系统的管道视频素材下载，适用于专业人士，压力，仅一个中老年男人，仅男人，40到44岁等主题的内容创作。

作者署名：Aliaksandr Sianko/Getty Images/华夏视觉