凸耳式阀门应该有能力在全压力下提供双向“终端应用”，不需要下游蒸汽无口法兰。
Lug style valves shall be capable of providing bidirectional "Dead End Service" at full pressure without the need for down stream blind flange.
PVC吊顶型材是中间为蜂巢状空洞、两边为封闭式的板材，有加工成型的企口和凸棒。
Profile of PVC condole top is empty, both sides is between honeycomb shape is enclosed sheet, has the processing molding tongue-and-groove and convex great.
管帽包括凸形管帽、锥壳、变径段、平盖及紧缩口的设计。
Tube caps include convex hull, hats, cone tube diameter changes, flat cover and tightening of design.
在支撑臂定位座的上壁顶口处对应支撑臂的滑动槽设置凸形滑动块；
The location slider of the support arm is cooperated to the sliding-groove of the sliding column to form to sliding mechanism.
在支撑臂定位座的上壁顶口处对应支撑臂的滑动槽设置凸形滑动块；
The location slider of the support arm is cooperated to the sliding-groove of the sliding column to form to sliding mechanism.
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