ASTM A 420/A 420M-2006 低温设备用锻制碳素钢和合金钢管道配件的标准规范

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【英文标准名称】:StandardSpecificationforUNSN08367andUNSN08926WeldedPipe
【原文标准名称】:UNSN08367和UNSN08926焊接管标准规范
【标准号】:ASTMB804-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:B02.07
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:镍合金;冶金;有缝管
【英文主题词】:UNSN08367;weldedpipe
【摘要】:1.1ThisspecificationcoversUNSN08367andUNSN08926weldedpipeforgeneralcorrosionapplications.(Althoughnorestrictionsareplacedonthesizesofpipethatmaybefurnishedunderthisspecification,commercialpracticeiscommonlylimitedtosizesnotlessthan8in.nominaldiameter.)1.2Sixclassesofpipearecoveredasfollows:1.2.1Class1pipeshallbedoubleweldedbyprocessesemployingfillermetalinallpassesandshallbecompletelyradiographed.1.2.2Class2pipeshallbedoubleweldedbyprocessesemployingfillermetalinallpasses.Noradiographyisrequired.1.2.3Class3pipeshallbedoubleweldedbyprocessesemployingfillermetalinallpassesexcepttheinsiderootweldmaybemadewithouttheadditionoffillermetal.Weldsaretobecompletelyradiographed.1.2.4Class4pipeshallbedoubleweldedbyprocessesemployingfillermetalinallpassesexcepttheinsiderootweldmaybemadewithouttheadditionoffillermetal.Noradiographyisrequired.1.2.5Class5pipeshallbesingleweldedbyprocessesemployingfillermetalinallpassesexceptthatthepassexposedtotheinsidepipesurfacemaybemadewithouttheadditionoffillermetal.Weldsaretobecompletelyradiographed.1.2.6Class6pipeshallbesingleweldedbyprocessesemployingfillermetalinallpassesexceptthatthepassexposedtotheinsidepipesurfacemaybemadewithouttheadditionoffillermetal.Noradiographyisrequired.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodsportion,Section12,ofthisstandard:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H48
【国际标准分类号】:77_150_40
【页数】:6P.;A4
【正文语种】:

标准名称：	油浸式全密封卷铁心配电变压器使用技术条件
发布部门：	国家能源局
发布日期：	2012-04-06
实施日期：	2012-07-01
首发日期：
作废日期：
出版社：	中国电力出版社
出版日期：	2012-07-01

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