压力管道是指所有承受内压或外压的管道，无论其管内介质如何。·····························································································压力管道是管道中的一部分，管道是用以输送、分配、混合、分离、排放、计量、控制和制止流体流动的，由管子、管件、法兰、螺栓连接
（l）《工业金属管道设计规范》（国标报批稿）。 （2） SH 3059—94 《石油化工企业管道设计器材选用通则》。 （3） SH 3064－94《石油化工钢制通用阀门选用、检验及验收》。
《工业金属管道设计规范》（国标报批稿）。SH 3059—94 《石油化工企业管道设计器材选用通则》。 SH 3064－94《石油化工钢制通用阀门选用、检验及验收》。
低压一般是庭院管道和楼栋架空管道和室内入户管道等中压管线一般是经过一级调压后的管道高压一般是进出入加气加油站 的管道。要是想了解的深一点，你最好还是找找工业金属管道设计规范看看
·····································································压力管道是指所有承受内压或外压的管道，无论其管内介质如何。·····························································································压力管道是管道中的一部分，管道是用以输送、分配、混合、分离、排放、计量、控制和制止流体流动的，由管子、管件、法兰、螺栓连接、垫片、阀门、其他组成件或受压部件和支承件组成的装配总成························································································································
