... Material: ss201 202 301 302 304 316 Dia:1"-8" DN10-DN200 17.2-168.3 standards:DIN/ASTM/BS/ISO ... /GB weld eccentric reducerStandardDIN, ASTM, BS, ISO. GBSize1"-6" DN10-DN200 17.2-168.3Steel material201 202 301 302 304 ... Ordering specificationSpecify:-application-Standard-Size-Steel material-Surface quality-Quantity DN10-200 butt weld eccentric reducer(eccentric concentric)