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:1000-4416(2003)01-0046-02X1,2(1.,276004;2.,250001):,:;;:TU996.7:BChoiceofGasPipeMaterialHUYang1,LIUQing2tang2(1.LinyiPreparatoryDepartmentforGasEngineering,Linyi276004,China;2.ShandongCityGasSafetyInspectionandSupervisionStation,Jinan250001,China)Abstract:Thematerialsofgaspipearecompared,andthecentrifugalductileironpipecanbechosenforlarge2diametermediumpressuregaspipe.Keywords:towngaspipeline;pipematerial;centrifugalductileironpipe1-,A,0.2MPa,,73,H2,CH4,N20.544,01155,01301,,2,,,2PE[18]0.6MPa,A,,,,,,,,,PE2.1,,30%,,23120031Gas&HeatVol.23No.1Jan.2003X:2002-02-04;:2002-12-10:(1969),,,,,,,,,PE1,21PEPMPa4201820PMPa5907010%600%Pa50502PmPmm150200300400248331499707PE1682987691214:(1);(2);(3);(4)2,DN200mm,PE;DN200mm,PE;DN200mm,PEDN200400mm,DN200mmPE2.2(1),,,PE,,,,(2),GB5002893CJJ6395,PE,(3),PE,,,(4),PE-5,(5)PE,(6),,PE,,3(1),(2),,:[1].[J].,1994,(4):2730.[2],.[J].,1996,(2):2425.[3],,.[J].,2001,(1):6465.[4],,,.[J].,2001,(2):142144.[5],.[J].,1989,(2):2630.[6],.[J].,1997,(2):25.[7],.[J].,1997,(4):27.[8].[J].,2002,(4):369370,373.741: