api5000The Api 5000 Flanges are manufactured using carbon steel or alloy steel, and they help to join pipes or block a section of the piping system. Api 10000 instrument flanges is of ring type joint specifically and they are not desnedRev. 4. 0 2018. 07. 27 FLANGES - 87 API 6A FLANGES Size OD C E1 G K T J1 J4 R BC N H Ring Number BX 13 58˝ 675 6 14.3 408.00 457 112.8 481.0 23.9 16 590.60 16 45