» Technical » ASME B16.5 Class 600 RTJ Facing Dimensions

ASME B16.5 Class 600 RTJ Facing Dimensions

August 28, 2019

Technical Drawings

RTJ flange facing

Figure-1: the ASME B16.5 flange with a ring-type joint (RTJ) facing. P – pitch diameter of groove; G – minimum diameter of raised portion; F – upper width of groove; r – radius at bottom of groove; E – depth of groove, equal to height of raised portion; 23°: slope angle of side wall.

RTJ flange joint

Figure-2: a RTJ joint consisting of two RTJ flanges and a metallic ring gasket which rests in the ring-joint groove. h: approximate distance between flanges. N: groove number.

Stud bot for RTJ flanges

Figure -3: The stud bolt with two nuts for the connection of two RTJ flanges. Its length is denoted as L (L does not include the height of the points).

ASME B16.5 Class 600 RTJ Facing Dimensions

NPSGroove No.PEF
1/21134.145.547.14
3/41342.886.358.74
11650.806.358.74
1-1/41860.336.358.74
1-1/22068.276.358.74
22382.557.9211.91
2-1/226101.607.9211.91
330117.487.9211.91
3-1/234131.787.9211.91
437149.237.9211.91
541180.987.9211.91
645211.127.9211.91
849269.887.9211.91
1053323.857.9211.91
1257381.007.9211.91
1461419.107.9211.91
1665469.907.9211.91
1869533.407.9211.91
2073584.209.5313.49
2281635.0011.1315.09
2477692.1511.1316.66
*Table 600#-1, all dimensions are in mm.

NPSrGhL
1/20.851.0375
3/40.863.5490
10.870.0490
1-1/40.879.5495
1-1/20.890.54110
20.81085110
2-1/20.81275120
30.81465125
3-1/20.81595140
40.81755145
50.82105165
60.82415170
80.83025195
100.83565215
120.84135220
140.84575235
160.85085255
180.85755275
201.56355290
221.56866310
241.57496335
*Table 600#-2, all dimensions are in mm.

RTJ Facings for ASME B16.5 Flanges in Classes
150#300#400#600#
900#1500#2500#-
*Click to view the RTJ facing dimensions for pressure rating Class 150 through Class 2500.

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