ASME/ANSI B16.5 Class 1500 LJ

The lap joint flange is practically identical to a slip-on flange except it has a radius at the intersection of the bore and flange face. 

 This radius is necessary to have the flange accommodate a lap joint stub end. Normally, a lap joint flange and a lap joint stub end are mated together is an assembly system.
Nominal Pipe Size Outside Diameter of FlangeThickness of Lap Joint Min.Diameter of HubLength Through HubBoreCorner Radius of Bore of Lapped FlangeDiameter of Bolt CircleDiameter of Bolt HolesNumber of BoltsApproxi-mate Weight kgs
NPSOtfXYBrWIn　
1/212022.3383222.9382.622.241.69
3/413025.4443528.2388.922.242.28
115028.6524134.93101.625.443.41
1 1/416028.6644143.75111.125.443.89
1 1/218031.8704450.06123.828.645.41
221538.11055762.58165.125.489.57
2 1/224541.31246475.48190.528.6813.54
326547.71337391.410203.231.8817.29
431054.016290116.811241.334.9827.02
537573.1197105144.411292.141.3851.41
639582.6229119171.413317.538.11260.85
848592.1292143222.213393.744.512103.41
10585108.0368178277.413482.650.812181.39
12675123.9451219328.213571.554.016286.48
14750133.4495241360.213635.060.316384.80
16825146.1552260411.213704.866.716492.31
18915162.0597276462.313774.773.016638.30
20985177.8641292514.413831.879.416766.56
241170203.2762330616.013990.692.1161227.85

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