【英文标准名称】:Districtheatingpipes-Preinsulatedbondedpipesystemsfordirectlyburiedhotwaternetworks-Pipeassemblyofsteelservicepipe,polyurethanethermalinsulationandoutercasingofpolyethylene
【原文标准名称】:区域供暖管道.直埋式热水供应网用预绝缘粘合管道系统.聚氨酯绝热和聚乙烯外部护套钢制给水管的管组件
【标准号】:BSEN253-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-01-31
【实施或试行日期】:2009-01-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:合成套管;合成管;定义;术语;远距离供热;区域供暖;发泡剂;热水供应网;套管;鼓箍;长距离加热系统;作标记;管道系统;管道;管道工程系统;聚乙烯;聚氨酯;规范(验收);钢管;钢;试验;隔热;地下;水管系统;水管
【英文主题词】:Compositejacketpipes;Compositetubes;Definition;Definitions;Distantheating;Districtheating;Foamingagents;Hotwaternetworks;Jackettubes;Laggingofadrum;Longdistanceheatingsystems;Marking;Pipesystem;Pipelines;Pipeworksystems;Polyethylene;Polyurethane;Specification(approval);Steelpipes;Steeltubes;Testing;Thermalinsulation;Underground;Waterpipesystems;Waterpipes
【摘要】:ThisEuropeanStandardspecifiesrequirementsandtestmethodsforstraightlengthsofprefabricatedthermallyinsulatedpipe-in-pipeassembliesfordirectlyburiedhotwaternetworks,comprisingasteelservicepipefromDN15toDN1200,rigidpolyurethanefoaminsulationandanoutercasingofpolyethylene.Thepipeassemblymayalsoincludethefollowingadditionalelements:measuringwires,spacersanddiffusionbarriers.Thisstandardappliesonlytoinsulatedpipeassemblies,forcontinuousoperationwithhotwateratvarioustemperaturesupto120°Candoccasionallywithapeaktemperatureupto140°C.TheestimationofexpectedthermallifewithcontinuousoperationatvarioustemperaturesisoutlinedinAnnexB.
【中国标准分类号】:Q83
【国际标准分类号】:23_040_10
【页数】:54P.;A4
【正文语种】:英语


Product Code:SAE J2221
Title:Standardized Symbols for Electrical Circuit Diagrams
Issuing Committee:Truck And Bus Electrical Systems Committee
Scope:This SAE Recommended Practice identifies graphic symbols used in electrical circuit diagrams. The symbols aid troubleshooting electrical systems.