{"id":24,"date":"2011-01-14T21:15:49","date_gmt":"2011-01-14T13:15:49","guid":{"rendered":"http:\/\/www.hsflanges.com\/blog\/?p=24"},"modified":"2018-12-20T20:41:01","modified_gmt":"2018-12-20T12:41:01","slug":"diameters-drilling-of-din-flanges-mm","status":"publish","type":"post","link":"https:\/\/www.hsflanges.com\/blog\/diameters-drilling-of-din-flanges-mm\/","title":{"rendered":"Diameters & Drilling of DIN Flanges ( mm )"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Flange Nominal Diameter<\/span><\/td>\nPressure Rating (PN)<\/span><\/td>\n\u00a0<\/span><\/td>\n<\/tr>\n
**Nominal BSP Pipe Size<\/span><\/td>\nPN6<\/span><\/td>\nPN10<\/span><\/td>\nPN16<\/span><\/td>\nPN25<\/span><\/td>\nPN40<\/span><\/td>\n\u00a0<\/span><\/td>\n<\/tr>\n
DN 10<\/td>\n75<\/td>\n90<\/td>\n90<\/td>\n90<\/td>\n90<\/td>\nO.D.<\/td>\n<\/tr>\n
3\/8″<\/td>\n50<\/td>\n60<\/td>\n60<\/td>\n60<\/td>\n60<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 11<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 15<\/td>\n80<\/td>\n95<\/td>\n95<\/td>\n95<\/td>\n95<\/td>\nO.D.<\/td>\n<\/tr>\n
1\/2″<\/td>\n55<\/td>\n65<\/td>\n65<\/td>\n65<\/td>\n65<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 11<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 20<\/td>\n90<\/td>\n105<\/td>\n105<\/td>\n105<\/td>\n105<\/td>\nO.D.<\/td>\n<\/tr>\n
3\/4″<\/td>\n65<\/td>\n75<\/td>\n75<\/td>\n75<\/td>\n75<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 11<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 25<\/td>\n100<\/td>\n115<\/td>\n115<\/td>\n115<\/td>\n115<\/td>\nO.D.<\/td>\n<\/tr>\n
1″<\/td>\n75<\/td>\n85<\/td>\n85<\/td>\n85<\/td>\n85<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 11<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n4 x 14<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 32<\/td>\n120<\/td>\n140<\/td>\n140<\/td>\n140<\/td>\n140<\/td>\nO.D.<\/td>\n<\/tr>\n
1 1\/4″<\/td>\n90<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 14<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 40<\/td>\n130<\/td>\n150<\/td>\n150<\/td>\n150<\/td>\n150<\/td>\nO.D.<\/td>\n<\/tr>\n
1 1\/2″<\/td>\n100<\/td>\n110<\/td>\n110<\/td>\n110<\/td>\n110<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 14<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 50<\/td>\n140<\/td>\n165<\/td>\n165<\/td>\n165<\/td>\n165<\/td>\nO.D.<\/td>\n<\/tr>\n
2″<\/td>\n110<\/td>\n125<\/td>\n125<\/td>\n125<\/td>\n125<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 14<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 65<\/td>\n160<\/td>\n185<\/td>\n185<\/td>\n185<\/td>\n185<\/td>\nO.D.<\/td>\n<\/tr>\n
2 1\/2″<\/td>\n130<\/td>\n145<\/td>\n145<\/td>\n145<\/td>\n145<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 14<\/td>\n4 x 18<\/td>\n4 x 18<\/td>\n8 x 18<\/td>\n8 x 18<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 80<\/td>\n190<\/td>\n200<\/td>\n200<\/td>\n200<\/td>\n200<\/td>\nO.D.<\/td>\n<\/tr>\n
3″<\/td>\n150<\/td>\n160<\/td>\n160<\/td>\n160<\/td>\n160<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 18<\/td>\n8 x 18<\/td>\n8 x 18<\/td>\n8 x 18<\/td>\n8 x 18<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 100<\/td>\n210<\/td>\n220<\/td>\n220<\/td>\n235<\/td>\n235<\/td>\nO.D.<\/td>\n<\/tr>\n
4″<\/td>\n170<\/td>\n180<\/td>\n180<\/td>\n190<\/td>\n190<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n4 x 18<\/td>\n8 x 18<\/td>\n8 x 18<\/td>\n8 x 22<\/td>\n8 x 22<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 125<\/td>\n240<\/td>\n250<\/td>\n250<\/td>\n270<\/td>\n270<\/td>\nO.D.<\/td>\n<\/tr>\n
5″<\/td>\n200<\/td>\n210<\/td>\n210<\/td>\n220<\/td>\n220<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n8 x 18<\/td>\n8 x 18<\/td>\n8 x 18<\/td>\n8 x 26<\/td>\n8 x 26<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 150<\/td>\n265<\/td>\n285<\/td>\n285<\/td>\n300<\/td>\n300<\/td>\nO.D.<\/td>\n<\/tr>\n
6″<\/td>\n225<\/td>\n240<\/td>\n240<\/td>\n250<\/td>\n250<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n8 x 18<\/td>\n8 x 22<\/td>\n8 x 22<\/td>\n8 x 26<\/td>\n8 x 26<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 175<\/td>\n\u00a0<\/td>\n315<\/td>\n315<\/td>\n330<\/td>\n350<\/td>\nO.D.<\/td>\n<\/tr>\n
7″<\/td>\n\u00a0<\/td>\n270<\/td>\n270<\/td>\n280<\/td>\n295<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n\u00a0<\/td>\n8 x 22<\/td>\n8 x 22<\/td>\n12 x 26<\/td>\n12 x 30<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 200<\/td>\n320<\/td>\n340<\/td>\n340<\/td>\n360<\/td>\n375<\/td>\nO.D.<\/td>\n<\/tr>\n
8″<\/td>\n280<\/td>\n295<\/td>\n295<\/td>\n310<\/td>\n320<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n8 x 18<\/td>\n8 x 22<\/td>\n12 x 22<\/td>\n12 x 26<\/td>\n12 x 30<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 250<\/td>\n375<\/td>\n395<\/td>\n405<\/td>\n425<\/td>\n450<\/td>\nO.D.<\/td>\n<\/tr>\n
10″<\/td>\n335<\/td>\n350<\/td>\n355<\/td>\n370<\/td>\n385<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n12 x 18<\/td>\n12 x 22<\/td>\n12 x 26<\/td>\n12 x 30<\/td>\n12 x 33<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 300<\/td>\n440<\/td>\n445<\/td>\n460<\/td>\n485<\/td>\n515<\/td>\nO.D.<\/td>\n<\/tr>\n
12″<\/td>\n395<\/td>\n400<\/td>\n410<\/td>\n430<\/td>\n450<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n12 x 22<\/td>\n12 x 22<\/td>\n12 x 26<\/td>\n16 x 30<\/td>\n16 x 33<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 350<\/td>\n490<\/td>\n505<\/td>\n520<\/td>\n555<\/td>\n580<\/td>\nO.D.<\/td>\n<\/tr>\n
14″<\/td>\n445<\/td>\n460<\/td>\n470<\/td>\n490<\/td>\n510<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n12 x 22<\/td>\n16 x 22<\/td>\n16 x 26<\/td>\n16 x 33<\/td>\n16 x 36<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 400<\/td>\n540<\/td>\n565<\/td>\n580<\/td>\n620<\/td>\n660<\/td>\nO.D.<\/td>\n<\/tr>\n
16″<\/td>\n495<\/td>\n515<\/td>\n525<\/td>\n550<\/td>\n585<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n16 x 22<\/td>\n16 x 26<\/td>\n16 x 30<\/td>\n16 x 36<\/td>\n16 x 39<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 500<\/td>\n645<\/td>\n670<\/td>\n715<\/td>\n730<\/td>\n755<\/td>\nO.D.<\/td>\n<\/tr>\n
20″<\/td>\n600<\/td>\n620<\/td>\n650<\/td>\n660<\/td>\n670<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n20 x 22<\/td>\n20 x 26<\/td>\n20 x 33<\/td>\n20 x 36<\/td>\n20 x 42<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n
DN 600<\/td>\n755<\/td>\n780<\/td>\n840<\/td>\n845<\/td>\n\u00a0<\/td>\nO.D.<\/td>\n<\/tr>\n
24″<\/td>\n705<\/td>\n725<\/td>\n770<\/td>\n770<\/td>\n\u00a0<\/td>\nPCD (bolt circle)<\/td>\n<\/tr>\n
\u00a0<\/td>\n20 x 24<\/td>\n20 x 27<\/td>\n20 x 33<\/td>\n20 x 36<\/td>\n\u00a0<\/td>\n# of holes x diam. of holes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

O.D. = outside diameter CD = bolt circle diameter N = nominal pressure in bars
\nNote: (1 bar = 14.5 psi = 0.1 MPa = 100 KPa = 1.02 Kgf\/cm2<\/p>\n","protected":false},"excerpt":{"rendered":"

Flange Nominal Diameter Pressure Rating (PN) \u00a0 **Nominal BSP Pipe Size PN6 PN10 PN16 PN25 PN40 \u00a0 DN 10 75 90 90 90 90 O.D. 3\/8″ 50 60 60 60 60 PCD (bolt circle) \u00a0 4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam.…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[47,44,48],"_links":{"self":[{"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/posts\/24"}],"collection":[{"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/comments?post=24"}],"version-history":[{"count":2,"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/posts\/24\/revisions"}],"predecessor-version":[{"id":26,"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/posts\/24\/revisions\/26"}],"wp:attachment":[{"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/media?parent=24"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/categories?post=24"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hsflanges.com\/blog\/wp-json\/wp\/v2\/tags?post=24"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}