钢制法兰管件

1、252;r Normung e. V., Berlin, gestattet.ICS 23.040.01!%Sv“2584883www.din.deDIN 21057-6Rohrklassen fr verfahrenstechnische Anlagen Teil 6: Technische Lieferbedingungen fr Rohrbauteile Flansche fr die maschinelle VorfertigungPipe classes for process plants Part 6: Technical delivery conditions for tube parts Flanges for machine prefabricationCatgorie de tubes pour les units de fabrication/de production Partie 6: Conditions techniques de livraison pour composants 。

2、e fixed designation A961/A961M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and partsfor piping applications 。

3、ion A961/A961M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers a group of common require-ments that shall apply to steel flanges, forged fittings, valves,and parts for piping applications under any of th。

4、 fixed designation A961/A961M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and partsfor piping applications u。

5、2009给出的规则起草。
本标准代替GB/T17185-1997(钢制法兰管件)，与GB/T17185-1979相比主要技术变化如下z对标准结构尺寸进行了调整，根据iSB16.5:2009，删除了原PNll.0、PN15.0和PN26.0的尺寸数据z一一将公称压力由PN2.0和PN5.0修改为Class150和Class300，并调整了个别尺寸数值，例如异径接头的端面至端面的距离等z一一修改了钢制法兰管件的种类及代号z一一增加了异径管件的相关技术内容z一一增加了钢制法兰管件的材料;二一修改了标记和标志的内容。
本标准修改采用iSMEB1 6. 5 :2009 (管法兰和法兰管件的法兰管件部分，其型式尺寸和技术要求与iSMEB1 6. 5 :2009相关内容基本一致。
本标准由中国机械工业联合会提出。
本标准由全国管路附件标准化技术委员会(SiC/TC237)归口。
本标准起草单位z中机生产力促进中心、中国石油工程建设公司华东设计分公司、中国天辰工程有限公司、江阴金童石化管件有限公司、湖州久立管件有限公司、扬州市管件厂有限公司。
本标准主要起草人z冯峰、刘洪福、刘建欣、杨立建、。