ASME B16.47 Series B / API 605 Class 600 WN

Norminal Pipe Size O.D.of Flange, O Min.Thick-ness of WN Flange, tf Lenth Through Hub, Y Diam. of Hub, X Hub Diam. Top, A Raised Fase Diam., R Bore (XS) Diam of Bolt Circle No.of Bolt Holes Diam.of Bolt Hole Min.Fillet Radius, r1 Approxi-mate Weight kgs
26 890 111.2 181 698 660.4 727 635.0 806.4 28 44.5 13 259.28
28 950 115.9 190 752 711.2 784 685.8 863.6 28 47.6 13 299.55
30 1020 125.5 205 806 762.0 841 736.6 927.1 28 50.8 13 372.00
32 1085 130.2 216 860 812.8 895 787.4 984.2 28 54.0 13 432.05
34 1160 141.3 233 914 863.6 953 838.2 1054.1 24 60.3 14 542.78
36 1215 146.1 243 968 914.4 1010 889.0 1104.9 28 60.3 14 593.49


Standards, Dimensions & Weight of WN flange

The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value.

Most common flange types

Regardless of custom sizing or specifications, the fundamental design of most flanges falls under six common styles created to close, connect, cover, or support pipes and pipe systems.



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