1·Shell as used herein shall mean all pressure holding parts of the vessel in contact with the service fluid, including heads, nozzles, manholes and manhole covers.
这里的壁板指与系统介质接触的所有压力部件，包括封头、设备口、人孔及人孔盖板。
2·In this paper, the design points of petroleum chemical equipment such as tower top, side and bottom piping, manholes layout and the nozzle position are introduced briefly.
本文对石油化工装置设计中塔顶、塔体侧面和塔底管道的设计，人孔布置及管口方位的设计要点做简要介绍。
3·Close all blind flanges, inspection holes and manholes.
关闭所有盲法兰盖、并检查各个孔和人孔。
4·This product factory with reinforcing plate, if you require other standard and non-standard manholes, need to offer standard or drawings, our factory can produce.
本产品出厂时不带加强板，如需其它标准和非标人孔，只需提供标准或图纸，我厂即可生产。
5·Designed for high temperature requirements rebound parts of manholes, valves.
适应于高温要求回弹部位的人孔，阀门。