» Flange & Fitting » ASME B16.47 Series B Flanges Class 400

ASME B16.47 Series B Flanges Class 400

September 5, 2019

Technical drawings

400LB WN Flange b16.47 sb drawing

Typical drawing for 400# welding neck flange with RF, in accordance with ASME B16.47 Series B.

400LB BL Flange b16.47 sb drawing

Typical drawing for class 400 blind flange with RF, in accordance with ASME B16.47 Series B.

Dimensions

NPSDKGX
26850781.0711689
28915838.2762740
30970895.4819794
321035952.5873845
3410851003.3927899
3611551066.8981952
*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
26660.488.988.9149
28711.295.395.3159
30762.0101.6101.6170
32812.8108.0108.0179
34863.6111.2111.2187
36914.4119.1119.1200
*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: 7mm height of RF for Class 400 Series B flange. All dimensions are in mm units.

NPSndlr
26281-1/21-3/811
28241-5/81-1/213
30281-5/81-1/213
32281-3/41-5/813
34321-3/41-5/814
36281-7/81-3/414
*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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