參考文獻(xiàn),1、ISO,11922 1,1997.Thermoplastics.pipes for。the.conveyance,of、fluids,Dimensions、and.tolerances,Part,1,Metric,series。2 ISO,TR 10839,2000。Polyethylene,pipes、and,fittings、for、the。supply.of、gaseous fuels.Code、of,practice。for、design,handling and,installation、3,IEC、60529,2001,Degrees、of、protection,provided.by,enclosures,IP code。4 EN、12117。1997.Plastics。piping systems.Fittings。valves,and。ancillaries.Determination of,gaseous。flow、rate,pressure drop、relationships,5,IS0,12176。1、1998,Plastics。pipes.and fittings。Equipment、for,fusion jointing.polyethylene systems、Part、1 Butt、fusion.6,IS0,12l76。2。2000,Plastics、pipes。and,fittings。Equipment.for fusion.jointing、polyethylene、systems,Part.2、Electrofusion.7,EN 1555,3.2002,Plastics,pipimg,systems。for,the supply,of,gaseous,fuels Polyethylene.PE,Part。3.Fittings