DIN2616-1-Steel-butt-welding-pipe-fittings-Eccentric-reducer-with-reduced-pressure-factor1

Hebei bainag.GroupDEUTSCHE NORMFebruary 1991Steel butt-welding pipe fittings四Eccentric reducers with reduced pressure factor2616Part 1Formstucke zum EinschweiBen:Reduzierstucke;This standard,together withverminderter AusnutzungsgradFebruary 1991 edition of DIN 2616 Part 2.supersedes June 1964 edition of DIN 2616.In keeping with current practice in standards published by the International Organization for Standardization(ISO),a comma hasbeen used throughout as the decimal marker.Dimensions in mm1 Field of application10g还i…This standard specifies seamless and welded eccentric steel reducers that are intended to be butt welded to pipes.Althoughthe wall thicknesses specified correspond to those of the pipes,these reducers do not permit operation at the same internalpressure as the pipe welded to the larger end of the reducer,i.e.they have a reduced pressure factor(cf.table 2 and clause 4).See DIN 2616 Part 2 for specifications regarding concentric reducers.2 Dimensions and designationDetail XDetail YDimensions a,12 and la are to beDN1百calculated from the followingformulae.日=4-2DN2l2min=0,5d1·8la min =0.5.d2Figure 1.Eccentric reducerDesignation of a seamless (S),eccentric (E)reducer in accordance with this standard (1),where d is equal to 114,3 mm,s isequal to 3,6 mm,d2 is equal to 60,3 mm and s2 is equal to 2,9 mm,made from material belonging to material group G as inD1N2609(G:Reducer DIN2616-1-E-114,3×3,6-60,3×2,9S-GTable 1.Minimum transition radiiNominal sizeDNMinimum radius,r15to502065to30030350t0600100700 or more120Continued on pages 2 to 7Beuth Verlag GmbH,Berlin,has the exclusive right of sale for German Standards (DIN-Normen)DIN 2616 Part 1 Engl.Price group 70891Sales No.0107Email:sales@haihaogroup.comwww.haihaopiping.com