【英文标准名称】:StandardSpecificationforCompositeRibbedSteelPipe,PrecoatedandPolyethyleneLinedforGravityFlowSanitarySewers,StormSewers,andOtherSpecialApplications
【原文标准名称】:重力流动卫生用排污管道,暴雨排污管道用和其他专用的预涂层的和聚乙烯衬料带由复合材料加强肋的钢管规范
【标准号】:ASTMA978/A978M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A05.17
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:compositeribbedsteelpipe;irrigationpipe;linerpipe;polyethylenefilledribsandextrudedliner;polyethylenelinedsteelpipe;polymercoatedsteelpipe;rehabilitationpipe;sanitarysewerpipe;sliplinepipe;stormdrainpipe;watertransmission
【摘要】:1.1Thisspecificationcoverscompositeribbedsteelpipe,precoatedandpolyethylenelinedintendedforuseforgravityflowsanitarysewers,stormsewers,andotherspecialapplicationssuchaswatertransmissionpipe,rehabilitationpipe,sliplinepipe,andirrigationpipewhereextracorrosionandabrasionresistancearerequired.Thesteelsheetusedinthefabricationofthepipehasapolymercoatingoverametalliccoatingofzinconbothsides.Inaddition,asthepipeisbeingfabricated,theribsarefilledwithpolyethyleneandthenapolyethylenelinerisextrudedontotheinteriorsurface.1.2Theexteriorpolymerprecoatingprovidesextraprotectionofthesteelagainstsoilsidecorrosion,inadditiontothatprovidedbythemetalliccoating,andalsoprovidesadielectricbarrierforcathodicprotection.Theinteriorpolymerprecoatingprovidesanadhesivelayerbetweenthegalvanizedsteelandthepolyethylenelining.Theappliedliningprovidesinternalprotectionagainstcorrosion,erosion,andabrasion.Byfillingtheribwhichhasadeltoidshape(smallerattheopeninginthepipewallthanatthebottomoftherib),thepolyethyleneismechanicallyconnectedtothepipewallandthepolyethylenelineristhenthermallybondedtothefilledrib.1.3Thisspecificationdoesnotincluderequirementsforbedding,backfill,ortherelationshipbetweenearthcoverloadandsheetthicknessofthepipe.Experiencehasshownthatthesuccessfulperformanceofthisproductdependsupontheproperselectionofsheetthickness,typeofbeddingandbackfill,controlledmanufactureintheplant,andcareintheinstallation.TheinstallationprocedureisdescribedinPracticeA798.1.4Thisspecificationisapplicabletoordersineitherinch-poundunitsasA978,orinSIunitsasA978M.Inch-poundunitsandSIunitsarenotnecessarilyequivalent.SIunitsareshowninbracketsinthetextforclarity,buttheyaretheapplicablevalueswhenthematerialisorderedtoA978M.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q81
【国际标准分类号】:23_040_10
【页数】:5P.;A4
【正文语种】:英语