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ENGINEERS’PROVIDERSEST.1909Servicing the Engineering Industry Since 1909Tel: 046 lange comparison GuideSelect Size Below for 500DN600What is DN?DN stands for 'Diameter Nominale'.Put simply, it is a rough translation of mm from imperial sizes, assuming that an inch is 25mm.We refer to a 12" flange as DN300, when in fact it is 304mm.What is the PCD?The PCD of a flange is one of the criticaldimensions.PCD (Pitch Circle Diameter) is thediameter of a circle that goes througheach of the bolt holes.There are several standards for flanges, and we deal with four of them;Table DTable EBritishStandard- BS10Table FTable E is the most popular for applications with water. Alldimensions are specified in inches.Table GTable HTable JTable KTable CAustralianStandard- AS2129Table DTable EThese flanges are equivalent to the BS10 flanges, except thatall dimensions are specified in mm. In some sizes, bolt holesare slightly larger to give better clearance.Table FTable GTable HTable JAmericanNationalStandardsInstitute(ANSI)ANSI 125ANSI 150Higher numbers denote higher pressures. Sometimes peopleuse the word 'Class' instead of ANSI. e.g. an ANSI 150 flangemight be called a 'Class 150'. All dimensions are specified ininches.ANSI 300ANSI 600ANSI 900ANSI 1500BS4504-6PN6BS4504-10 PN10BritishStandard- BS4504BS4504-16 PN16BS4504-25 PN25BS4504-40 PN40BS4504-64 PN64BS4504-100 PN100Engineers use the prefix PN (Pressure Nominale). e.g. aBA4504-16 flange will commonly be referred to as a PN16.Generally, a PN16 flange is designed to withstand pressures upto 16 bar. All dimensions are specified in mm.
Return To Index PageSize DN15TableANSI 125/150ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-100FlangeDiameter3 1/2" / 89mm3 3/4" / 95mm4 3/4" / 121mm4 3/4" / 121mm95mm95mm95mm95mm14mm114mm3 3/4" / 95mm3 3/4" / 95mm3 3/4" / 95mm4 1/2" / 114mm4 1/2" / 114mm4 1/2" / 8" / 60mm5/8" / 67mm1/4" / 83mm1/4" / 83mm67mm67mm67mm67mm83mm83mm5/8" / 67mm5/8" / 67mm5/8" / 67mm1/4" / 83mm1/4" / 83mm1/4" / 2"5/8"5/8"5/8"M10M12M12M12M12M12M12Hole Size5/8" / 16mm5/8" / 16mm7/8" / 22mm7/8" / 22mm14mm14mm14mm14mm17mm17mm9/16" / 14mm9/16" / 14mm9/16" / 14mm11/16" / 17mm11/16" / 17mm11/16" / 17mm11mm14mm14mm14mm14mm14mm14mmThicknessGrey Cast mm13mm16mm12mm14mm14mm16mmCopper AlloyCast / Forged Steel5/16" / 8mm5/16" / 8mm9/16" / 14mm7/8" / 22mm7/8" / 22mm10mm10mm10mm10mm13mm16mm3/8" / 10mm3/8" / 10mm3/8" / 10mm1/2" / 13mm5/8" / 16mm3/4" / 19mm13mm6mm6mm8mm10mm16mm1/4" / 6mm1/4" / 6mm5/16" / 8mm3/8" / 10mm5/8" / 16mm3/4" / 19mm8mm9mm16mm16mm20mm20mm
Return To Index PageSize DN20TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-100FlangeDiameter3 7/8" / 98mm4 5/8" / 117mm4 5/8" / 117mm5 1/8" / 130mm5 1/8" / 130mm100mm100mm100mm100mm115mm115mm4" / 102mm4" / 102mm4" / 102mm4 1/2" / 114mm4 1/2" / 114mm4 1/2" / 3333/4" / 70mm1/4" / 83mm1/4" / 83mm1/2" / 89mm1/2" / 89mm73mm73mm73mm73mm83mm83mm7/8" / 73mm7/8" / 73mm7/8" / 73mm1/4" / 83mm1/4" / 83mm1/4" / /2"1/2"5/8"5/8"5/8"M10M12M12M12M12M16M16Hole Size5/8" / 16mm3/4" / 19mm3/4" / 19mm7/8" / 22mm7/8" / 22mm14mm14mm14mm14mm18mm18mm9/16" / 14mm9/16" / 14mm9/16" / 14mm11/16" / 17mm11/16" / 17mm11/16" / 17mm11mm14mm14mm14mm14mm18mm18mmThicknessGrey Cast mm13mm16mm14mm16mm16mm18mmCopper AlloyCast / Forged Steel11/32" / 9mm17/32" / 13mm9/16" / 14mm5/8" / 16mm5/8" / 16mm1" / 25mm1" / 25mm10mm10mm10mm10mm13mm16mm3/8" / 10mm3/8" / 10mm3/8" / 10mm1/2" / 13mm5/8" / 16mm3/4" / 19mm13mm6mm6mm8mm10mm16mm1/4" / 6mm1/4" / 6mm5/16" / 8mm3/8" / 10mm5/8" / 16mm3/4" / 19mm6mm8mm9mm18mm18mm18mm22mm22mm
Return To Index PageSize DN25TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-1004445544444FlangeDiameter1/4" / 108mm7/8" / 124mm7/8" / 124mm7/8" / 149mm7/8" / 149mm115mm115mm115mm120mm120mm120mm1/2" / 114mm1/2" / 114mm3/4" / 121mm3/4" / 121mm3/4" / 121mm5" / 127mm100mm115mm115mm115mm115mm140mm140mmPCDBolts3 1/8" / 79mm3 1/2" / 89mm3 1/2" / 89mm4" / 102mm4" / 102mm83mm83mm83mm87mm87mm87mm3 1/4" / 83mm3 1/4" / 83mm3 7/16" / 87mm3 7/16" / 87mm3 7/16" / 87mm3 3/4" / 5/8"5/8"5/8"5/8"M10M12M12M12M12M16M16Hole Size5/8" / 16mm3/4" / 19mm3/4" / 19mm1" / 25mm1" / 25mm14mm14mm14mm18mm18mm18mm9/16" / 14mm9/16" / 14mm9/16" / 14mm11/16" / 17mm11/16" / 17mm11/16" / 17mm11mm14mm14mm14mm14mm18mm18mmThicknessGrey Cast IronCopper AlloyCast / Forged Steel7/16" / 11mm3/8" / 10mm19/32" / " / 8mm5/16" / 8mm3/8" / 10mm7/16" / 11mm3/4" / 19mm7/8" / 22mm7/16" / 11mm11/16" / 17mm11/16" / 17mm1 1/8" / 29mm1 1/8" / 29mm10mm10mm10mm10mm14mm19mm3/8" / 10mm3/8" / 10mm3/8" / 10mm9/16" / 14mm3/4" / 19mm7/8" / mm18mm8mm9mm11mm18mm18mm18mm24mm24mm
Return To Index PageSize DN32TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-10045566445555FlangeDiameter5/8" / 117mm1/4" / 133mm1/4" / 133mm1/4" / 159mm1/4" / 159mm120mm120mm120mm135mm135mm135mm3/4" / 121mm3/4" / 121mm1/4" / 133mm1/4" / 133mm1/4" / 133mm1/4" / 133mm120mm140mm140mm140mm140mm155mm155mmPCDBolts3 1/2" / 89mm3 7/8" / 98mm3 7/8" / 98mm4 3/8" / 111mm4 3/8" / 111mm87mm87mm87mm98mm98mm98mm3 7/16" / 87mm3 7/16" / 87mm3 7/8" / 98mm3 7/8" / 98mm3 7/8" / 98mm3 7/8" / 1/2"5/8"5/8"5/8"5/8"M12M16M16M16M16M20M20Hole Size5/8" / 16mm3/4" / 19mm3/4" / 19mm1" / 25mm1" / 25mm14mm14mm14mm18mm18mm18mm9/16" / 14mm9/16" / 14mm11/16" / 17mm11/16" / 17mm11/16" / 17mm11/16" / 17mm14mm18mm18mm18mm18mm22mm22mmThicknessGrey Cast IronCopper AlloyCast / Forged Steel1/2" / 13mm13/32" / 10mm5/8" / " / 8mm5/16" / 8mm3/8" / 10mm7/16" / 11mm3/4" / 19mm7/8" / 22mm1/2" / 13mm3/4" / 19mm13/16" / 21mm1 1/8" / 29mm1 1/8" / 29mm13mm13mm13mm13mm17mm19mm1/2" / 13mm1/2" / 13mm1/2" / 13mm11/16" / 17mm3/4" / 19mm7/8" / mm20mm8mm9mm11mm18mm18mm18mm26mm26mm
Return To Index PageSize DN40TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-1006655555FlangeDiameter5" / 127mm1/8" / 156mm1/8" / 156mm7" / 178mm7" / 178mm135mm135mm135mm140mm140mm140mm1/4" / 133mm1/4" / 133mm1/2" / 140mm1/2" / 140mm1/2" / 140mm6" / 152mm130mm150mm150mm150mm150mm170mm170mmPCDBolts3 7/8" / 98mm4 1/2" / 114mm4 1/2" / 114mm4 7/8" / 124mm4 7/8" / 124mm98mm98mm98mm105mm105mm105mm3 7/8" / 98mm3 7/8" / 98mm4 1/8" / 105mm4 1/8" / 105mm4 1/8" / 105mm4 1/2" / 2"5/8"5/8"5/8"3/4"M12M16M16M16M16M20M20Hole Size5/8" / 16mm7/8" / 22mm7/8" / 22mm1 1/8" / 29mm1 1/8" / 29mm14mm14mm14mm18mm18mm18mm9/16" / 14mm9/16" / 14mm11/16" / 17mm11/16" / 17mm11/16" / 17mm7/8" / 22mm14mm18mm18mm18mm18mm22mm22mmThicknessGrey Cast IronCopper AlloyCast / Forged Steel9/16" / 14mm7/16" / 11mm11/16" / 8" / 10mm3/8" / 10mm7/16" / 11mm1/2" / 13mm7/8" / 22mm1" / 25mm9/16" / 14mm13/16" / 21mm7/8" / 22mm1 1/4" / 32mm1 1/4" / 32mm13mm13mm13mm13mm17mm22mm1/2" / 13mm1/2" / 13mm1/2" / 13mm11/16" / 17mm7/8" / 22mm1" / mm20mm9mm11mm13mm18mm18mm18mm28mm28mm
Return To Index PageSize DN50TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-10066886666FlangeDiameter6" / 152mm1/2" / 165mm1/2" / 165mm1/2" / 216mm1/2" / 216mm150mm150mm150mm165mm165mm165mm6" / 152mm6" / 152mm1/2" / 165mm1/2" / 165mm1/2" / 165mm1/2" / 165mm140mm165mm165mm165mm165mm180mm195mmPCDBolts4 3/4" / 121mm5" / 127mm5" / 127mm6 1/2" / 165mm6 1/2" / 165mm114mm114mm114mm127mm127mm127mm4 1/2" / 114mm4 1/2" / 114mm5" / 127mm5" / 127mm5" / 127mm5" / 8"5/8"5/8"5/8"3/4"5/8"M12M16M16M16M16M20M24Hole Size3/4" / 19mm3/4" / 19mm3/4" / 19mm1" / 25mm1" / 25mm18mm18mm18mm18mm18mm22mm11/16" / 17mm11/16" / 17mm11/16" / 17mm11/16" / 17mm7/8" / 22mm11/16" / 17mm14mm18mm18mm18mm18mm22mm26mmThicknessGrey Cast IronCopper AlloyCast / Forged Steel5/8" / 16mm1/2" / 13mm3/4" / 8" / 10mm3/8" / 10mm7/16" / 11mm1/2" / 13mm1" / 25mm1" / 25mm5/8" / 16mm7/8" / 22mm1" / 25mm1 1/2" / 38mm1 1/2" / 38mm14mm14mm14mm16mm19mm25mm9/16" / 14mm9/16" / 14mm5/8" / 16mm3/4" / 19mm1" / 25mm1" / 25mm11/16" / 17mm3/4" / 19mm3/4" / 19mm1" / mm
Return To Index PageSize DN65TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-1007799667777FlangeDiameter7" / 178mm1/2" / 191mm1/2" / 191mm5/8" / 244mm5/8" / 244mm165mm165mm165mm185mm185mm185mm1/2" / 165mm1/2" / 165mm1/4" / 184mm1/4" / 184mm1/4" / 184mm1/4" / 551/2" / 140mm7/8" / 149mm7/8" / 149mm1/2" / 191mm1/2" / 191mm127mm127mm127mm146mm146mm146mm5" / 127mm5" / 127mm3/4" / 146mm3/4" / 146mm3/4" / 146mm3/4" / m5/8"5/8"5/8"5/8"3/4"3/4"M12M16M16M16M16M20M24Hole Size3/4" / 19mm7/8" / 22mm7/8" / 22mm1 1/8" / 29mm1 1/8" / 29mm18mm18mm18mm18mm18mm22mm11/16" / 17mm11/16" / 17mm11/16" / 17mm11/16" / 17mm7/8" / 22mm7/8" / 22mm14mm18mm18mm18mm18mm22mm26mmThicknessGrey Cast IronCopper AlloyCast / Forged Steel11/16" / 17mm9/16" / 14mm13/16" / 16" / 11mm7/16" / 11mm1/2" / 13mm9/16" / 14mm1" / 25mm1 1/8" / 29mm11/16" / 17mm1" / 25mm1 1/8" / 29mm1 5/8" / 41mm1 5/8" / 41mm14mm14mm14mm16mm19mm25mm9/16" / 14mm9/16" / 14mm5/8" / 16mm3/4" / 19mm1" / 25mm1 1/8" / 29mm11/16" / 17mm3/4" / 19mm3/4" / 19mm1" / mm
Return To Index PageSize DN80TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-100FlangeDiameter7 1/2" / 191mm8 1/4" / 210mm8 1/4" / 210mm9 1/2" / 241mm10 1/2" / 267mm185mm185mm185mm205mm205mm205mm7 1/4" / 184mm7 1/4" / 184mm8" / 203mm8" / 203mm8" / 203mm8" / 666" / 152mm5/8" / 168mm5/8" / 168mm1/2" / 191mm8" / 203mm146mm146mm146mm165mm165mm165mm3/4" / 146mm3/4" / 146mm1/2" / 165mm1/2" / 165mm1/2" / 165mm1/2" / 4448884488884888888BoltSize5/8"3/4"3/4"7/8"1 4"M16M16M16M16M16M20M24Hole Size3/4" / 19mm7/8" / 22mm7/8" / 22mm1" / 25mm1 1/4" / 32mm18mm18mm18mm18mm18mm22mm11/16" / 17mm11/16" / 17mm11/16" / 17mm11/16" / 17mm7/8" / 22mm7/8" / 22mm18mm18mm18mm18mm18mm22mm26mmThicknessGrey Cast IronCopper AlloyCast / Forged Steel3/4" / 19mm5/8" / 16mm29/32" / 2" / 13mm1/2" / 13mm9/16" / 14mm5/8" / 16mm1 1/4" / 32mm1 1/4" / 32mm3/4" / 19mm1 1/8" / 29mm1 1/4" / 32mm1 1/2" / 38mm1 7/8" / 48mm14mm14mm14mm16mm22mm32mm9/16" / 14mm9/16" / 14mm5/8" / 16mm7/8" / 22mm1 1/4" / 32mm1 1/4" / 32mm3/4" / 19mm3/4" / 19mm3/4" / 19mm1 1/8" / mm
Return To Index PageSize DN100TableANSI 125/150ANSI 300ANSI 600ANSI 900ANSI 1500AS2129 Table CAS2129 Table DAS2129 Table EAS2129 Table FAS2129 Table HAS2129 Table JBS10 Table DBS10 Table EBS10 Table FBS10 Table HBS10 Table JBS10 Table 4-64BS4504-100FlangeDiameter9" / 229mm10" / 254mm10 3/4" / 273mm11 1/2" / 292mm12 1/4" / 311mm215mm215mm215mm230mm230mm230mm8 1/2" / 216mm8 1/2" / 216mm9" / 229mm9" / 229mm9" / 229mm9 1/2" / 771/2" / 191mm7/8" / 200mm1/2" / 216mm1/4" / 235mm1/2" / 241mm189mm178mm178mm191mm191mm191mm7" / 178mm7" / 178mm1/
ANSI 125/150 4 5/8" / 117mm 3 1/2" / 89mm 4 1/2" 5/8" / 16mm 1/2" / 13mm 13/32" / 10mm 1/2" / 13mm ANSI 300 5 1/4" / 133mm 3 7/8" / 98mm 4 5/8" 3/4" / 19mm 5/8" / 16mm 3/4" / 19mm ANSI 600 5 1/4" / 133mm 3 7/8" / 98mm 4 5/8" 3/4" / 19mm 13/16" / 21mmFile Size: 246KBPage Count: 21
