本文论述了HD型石油化工流程泵在开发研制过程中结构、水力设计以及密封问题上的思考，与化工行业的同行进行交流。
This paper discussed thoughts of structure design, hydraulic design and seal design of HD type petrol - chemical process pump, in order to communicate with experts in petrol - chemical industry.
MRPII从起源到应用一直是面向离散型行业，而对流程生产模式下的MRPII则研究较少。
MRPII is always oriented to the discrete manufacturing lines from the origination to the application. Study on MRPII of flow process production was less.
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