SAE J457 Chemical Compositions, Mechanical Property Limits, and Dimensional Tolerances of SAE Wrought Aluminum Alloys

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Product Code:SAE J457
Title:Chemical Compositions, Mechanical Property Limits, and Dimensional Tolerances of SAE Wrought Aluminum Alloys
Issuing Committee:Metals Technical Executive Steering Committee
Scope:This SAE Standard for wrought aluminum alloys provides sources of chemical and mechanical property data for a considerable range of alloys with varying properties, structures, and applications.
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【英文标准名称】:Installationoflowpressuregaspipeworkofupto35mm(R11/4)indomesticpremises(2ndfamilygas)-Specification
【原文标准名称】:家用房屋中燃气低压管道<35mm(R11/4)的安装(2类燃气).规范
【标准号】:BS6891-2005+A2-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2005-11-18
【实施或试行日期】:2005-11-18
【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】:建筑物;铜;腐蚀;防腐蚀;波纹状的;设计;设计计算;尺寸;家用管道系统;防火安全;建筑物防火;楼板;流量率;燃气管路;燃气管;燃气供应;装配;连接件;漏泄试验;可锻铸铁;管道配件;管支架;管;管道工程系统;塑料;压力;压力试验;安全措施;不锈钢;钢;地下;阀门;通风;墙;二类家用煤气
【英文主题词】:Buildings;Copper;Corrosion;Corrosionprotection;Corrugated;Design;Designcalculations;Dimensions;Domesticpipeworksystems;Firesafety;Firesafetyinbuildings;Floors;Flowrates;Gascircuits;Gaspipes;Gassupply;Installation;Joints;Leaktests;Malleablecast-iron;Pipefittings;Pipesupports;Pipes;Pipeworksystems;Plastics;Pressure;Pressuretesting;Safetymeasures;Size;Stainlesssteels;Steels;Underground;Valves;Ventilation;Walls;2ndfamilygases
【摘要】:ThisBritishStandardspecifiesdesignparameters,materialsandmethodsofinstallingpipe,insizesnotexceedingR1?(32mm)forsteelandDN32forcorrugatedstainlesssteelorDN35forcopper,gaspipework,forthesupplyof2ndfamilygasfromthemetertoappliancesindomesticdwellings.ThestandardisalsoapplicabletopolyethylenepipeuptoDN32thatisexteriortoadwelling.Thisstandardappliestogasinstallationpipeworkwherethenominaloperatingpressureis21mbar1).COMMENTARYANDRECOMMENDATIONSONCLAUSE1AnnexAshowsatypicaldomesticgasinstallation(figuresfromtheGasSafety(InstallationandUse)Regulations1998[1]).SteelpipeworktoBS1387ofnominalsizeDN32isthatsizewhichisthreadedtoR1?(32mm)inaccordancewithBS21.Theprovisionofservicepipestotheconsumer’sgasmeteriscoveredbytheInstitutionofGasEngineersandManagerspublicationIGE/TD/4[6].TheinstallationofgasmetersiscoveredbyBS6400.3rdfamilygas(liquefiedpetroleumgas)installationsinpermanentdwellingsarecoveredinBS5482-1.GasinstallationpipeworkinlargersizesorathighergaspressuresisdetailedintheInstitutionofGasEngineersandManagerspublicationIGE/UP/2[7].Gas,asclassifiedinBSEN437:2003,Table1,isnormallysuppliedtothepublicinaccordancewithstatutoryrequirements.Theprovisionsofthisstandardapplytoinstallationssuppliedwith2ndfamilygasesincludingnaturalgasandmixturesofliquefiedpetroleumgases(LPG)andair.NOTE1Forthepurposesofthisstandard,installationincludesdesign,inspectionandcommissioning.Itisrecognizedthateachofthesetaskscanbeperformedbythesameperson.NOTE2Aswellasnormallyconstructeddwellings,domesticpremisesincludeanypermanentlysitedcaravans,holidayhomes,residentialparkhomesandpermanentlymooredboats.AdditionalrequirementsexistforthesecategoriesofpremisesandcanbefoundinIGE/UP/8[8].NeitherthisstandardnorIGE/UP/8[8]appliestogasinstallationsintowedormotorizedcaravans.NOTE3AdditionalinformationongasinstallationsintimberframedwellingsisgiveninIGE/UP/7[9].
【中国标准分类号】:Q82
【国际标准分类号】:91_140_40
【页数】:44P.;A4
【正文语种】:英语


基本信息
标准名称:钢壳麻索滑车
中标分类: 船舶 >> 舾装设备 >> 船用装置
发布日期:1900-01-01
实施日期:1900-01-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
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所属分类: 船舶 舾装设备 船用装置