(Hand-dug pipe jacking machine is an open (or open) pipe jacking machine of right and wrong machinery. During construction, manual methods are used to crush the soil layer of the office surface. The auxiliary tools for crushing are mainly picks, shovels and impact hammers. Wait. Broken dirt or rock can be transported by conveyor belts, trolleys, or rail-mounted minecarts)
发表于 2022-8-10 22:35:17
粤ICP备14042591号-1
粤ICP14042591号