The classification of pressure vessel, pressure piping

1. The classification of pressure vessels according to the category of pressure vessel, is divided into: Ⅰ class pressure vessel, Ⅱ class pressure vessel, Ⅲ class pressure vessel. The category of the pressure vessel, according to the dielectric properties or harmful to the medium ( With medium degree of toxicity and explosive damage) , the design pressure p ( Unit MPa) And volume V ( Unit L) Factors such as the division. Pressure vessel category should be indicated on the general layout design of pressure vessels. Belong to Ⅰ class pressure vessel are: non flammable or toxic medium low pressure container. Belong to Ⅱ class pressure vessel are: medium pressure vessel; Low pressure container: extreme and highly toxic medium low pressure vessel; Flammable or moderate toxicity medium low pressure low storage containers and reaction containers; Low pressure tube shell type waste heat boiler; Low pressure glass lining container. 2. According to the classification of the pressure piping pressure piping installation license categories and its level is divided into: long distance, Oil and gas) Pipeline: GA class pressure pipeline, divided into GA1, GA2 stage; Utility piping: GB class pressure pipeline, divided into gas pipeline ( GB1 level) , heat pipe ( GB2 level) ； Industrial pipeline: GC class pressure pipeline, divided into GC1, GC2, GC3 level; Power pipeline: GD type of pressure pipeline, divided into GD1, GD2 level.