» Flange & Fitting » ASME B16.47 Series B Flanges Class 300

ASME B16.47 Series B Flanges Class 300

September 5, 2019

Technical drawings

300LB WN Flange b16.47 sb drawing

Typical drawing for 300# welding neck flange with RF, in accordance with ASME B16.47 Series B.

300LB BL Flange b16.47 sb drawing

Typical drawing for class 300 blind flange with RF, in accordance with ASME B16.47 Series B.

Dimensions

NPSDKGX
26865803.3737702
28920857.2787756
30990920.8845813
321055977.9902864
3411101031.9953918
3611701089.01010965
3812201139.810601016
4012751190.611141067
4213351244.611681118
4413851295.412191173
4614601365.212701229
4815101416.013271278
5015601466.813781330
5216151517.614291383
5416751578.014801435
5617651651.015371494
5818251712.915941548
6018801763.716511599
*D: outside diameter of flange; K: diameter of bolt circle; G: outside diameter of raised face; X: diameter of hub of  WN flange. All dimensions are in mm units.

NPSATBLTWNY
26665.287.487.7143
28716.087.487.4148
30768.492.192.1156
32819.2101.6101.6167
34870.0101.6101.6171
36920.8101.6101.6179
38971.6109.6109.6191
401022.4114.3114.3197
421074.7117.5117.5203
441125.5125.5125.5213
461176.3128.6127.0221
481227.1133.4127.0222
501277.9138.2136.6233
521328.7142.6141.3241
541379.5147.7135.0238
561430.3155.4152.4267
581481.1160.4152.4273
601531.9165.1149.3270
*A: diameter of hub top of WN; TBL: minimum thickness of blind flange; TWN: minimum thickness of WN flange; Y: length through hub of WN; t: 2mm height of RF for Class 300 Series B flange. All dimensions are in mm units.

NPSndlr
26321-3/81-1/414
28361-3/81-1/414
30361-1/21-3/814
32321-5/81-1/216
34361-5/81-1/216
36321-3/41-5/816
38361-3/41-5/816
40401-3/41-5/816
42361-7/81-3/416
44401-7/81-3/416
463621-7/816
484021-7/816
504421-7/816
524821-7/816
544821-7/816
56362-3/82-1/417
58402-3/82-1/417
60402-3/82-1/417
*n: number of bolt holes; d: diameter of bolt hole; l: diameter of bolt; r: minimum fillet radius for WN. d and l are in inch units,while r is in mm unit.

ASME B16.47 Series A Flanges, by Class
150300400600900-
ASME B16.47 Series B Flanges, by Class
75150300400600900
*Click to view the dimensions for ASME B16.47 Series B welding neck flanges and blind flanges of each pressure rating.

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