ladder stand

In the revamp design of Xishan railway loading jetty of PetroChina Dalian Petrochemical Company, the maximum number of hoses and installation of detachable ladder were studied.

通过大连石化分公司西山铁路装卸车栈桥改造项目的设计,对12 m铁路槽车一个车位最多可布置的鹤管数量和活动梯安装进行了研究。