Size DN650

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FLANGE DIMENSIONS TABLE SIZE (DN) 650 (26″)

Class/Table Flange O.D. PCD Bolts Bolt Size Hole Size Minimum Flange Thickness*
Cast Iron Copper Alloy Ductile Iron Steel
ASME 150 B16.47 Series A Supersedes MSS-SP44 870mm 806.4mm 24 1 1/4″ 35mm 68.4mm
WN & BL
ASME 300 B16.47 Series A Supersedes MSS-SP44 971.6mm 876.3mm 28 1 5/8″ 44.4mm 79.3mm WN
84.1mm BL
ASME Class 600 B16.47 Series A Supersedes MSS-SP44 1016.1mm 914.4mm 28 1 7/8″ 50.8mm 108mm WN
125.5mm BL
ASME Class 900 B16.47 Series A Supersedes MSS-SP44 1085.9mm 952.5mm 20 2 3/4″ 73.1mm 139.8mm WN
160.3mm BL
ASME 150 B16.47 Series B Supersedes API-605 785.9mm 744mm 36 13/16″ 22.3mm 41.2mm WN
44.5mm BL
ASME 300 B16.47 Series B Supersedes API-605 866.7mm 803.1mm 32 1 1/4″ 35mm 89mm WN
89mm BL
ASME Class 600 B16.47 Series B Supersedes API-605 889.1mm 806.4mm 28 1 5/8″ 44.4mm 111.3mm
WN & BL
ASME Class 900 B16.47 Series B Supersedes API-605 1022.4mm 901.7mm 20 2 1/2″ 66.5mm 134.9mm WN
154mm BL
BS3293 Class 150 870mm 806.4mm 24 1 1/4″ 34.0mm 50.9mm
AS2129 Table A (FF) ① 845mm 781.0mm 16 M27 30.0mm 32mm 25mm

WN= Weld Neck
BL= Blind

① Can be RF in lieu as per AS2129. If RF, then flange thickness is the same but includes RF.

* Varies according to flange type (thickness usually includes raised face height where applicable) refer to standard. Some standards publish integral flange thicknesses used for valves which are often different than blind or welding flange thicknesses hence refer to standard for clarification. Refer links to flange standards in the technical screen of our website.

This above table is a rough ready reckoner only to understand standards, differences & commonality and to assess interchangeability. Refer to the standard required itself before manufacture. Some standards publish integral flange thicknesses used for valves which are often different than blind or welding flange thicknesses hence refer to standard for clarification.

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