Cast iron y strainerflange dimension conform to en1092-2, din 25322533 ; ansi b16.1 class125; ansi b16.1 class150testing conform to bs6755the hole dimension of screen can be as per the customer's requirementcomponentsno. partname material1 body castiron, ductileiron2 screen ss3043 bolt carbonsteel4 gasket epdm, bunaorgraphite5 bonnet castiron, ductileiron6 plug malleableirondimensions(unit mm)dn l d d1 b n-d50 230 165 125 20 4-1965 290 185 145 20 4-1980 310 200 160 22 8-19100 350 220 180 24 8-19125 400 250 210 26 8-18150 480 285 240 26 8-22200 600 340 295 30 12-22250 730 405 355 32 12-26300 850 460 410 32 12-26350 980 520 470 36 16-26400 1100 580 525 38 16-30450 1200 640 585 40 20-30.