» Flange & Fitting » ASME B16.5 Class 900 Lap Joint Flange

ASME B16.5 Class 900 Lap Joint Flange

August 15, 2019

Technical Drawing

900LB lap joint flange drawing

A typical drawing for Class 900 lap joint flange, ASME B16.5.

Bolts for 900LB lap joint flange

Stud bolt with nuts for the bolting of lap joint flange 900#

Dimensions of 900# Lap Joint Flanges

NPSDBXK
1/212022.93882.6
3/413028.24488.9
115034.952101.6
1-1/416043.764111.1
1-1/218050.070123.8
221562.5105165.1
2-1/224575.4124190.5
324091.4127190.5
4290116.8159235.0
5350144.4190279.4
6380171.4235317.5
8470222.2298393.7
10545277.4368469.9
12610328.2419533.4
14640360.2451558.8
16705411.2508616.0
18785462.3565685.8
20855512.8622749.3
241040614.4749901.7
*D: outside diameter of flange; K: diameter of bolt circle; B: minimum bore diameter; X: diameter of hub at base; All units are mm.

NPSndlL
1/247/83/4-
3/447/83/4-
1417/8-
1-1/4417/8-
1-1/241-1/81-
2817/8-
2-1/281-1/81-
3817/8-
481-1/41-1/8-
581-3/81-1/4-
6121-1/41-1/8-
8121-1/21-3/8-
10161-1/21-3/8-
12201-1/21-3/8-
14201-5/81-1/2-
16201-3/41-5/8-
182021-7/8-
20202-1/82-
24202-5/82-1/2-
*n: number of bolts; d: diameter of bolt holes; l: diameter of bolts; L: length of stud bolt, calculated according to Non-mandatory Appendix C; All units are mm except that d and l are provided in inch.

NPSYTrWeight
1/23222.331.71
3/43525.432.30
14128.633.40
1-1/44128.653.85
1-1/24431.865.28
25738.189.78
2-1/26441.3813.6
35438.11011.3
47044.51119.2
57950.81131.2
68655.61340.5
811463.51371.5
1012769.913104
1214379.413139
1415685.813161
1616588.913194
18190101.613267
20210108.013334
24267139.713618
* Y: length through hub;  T: minimum thickness of 900LB lap joint flange; r: corner bore radius of lapped flange and pipe; Weight: approximate weights/masses of the flange; All units are in mm except that weights are in kg.

ASME B16.5 Lap Joint Flanges, Classes
150#300#400#600#
900#1500#2500#-
*Click to view the dimensions and weights of lap joint flanges of each pressure rating.

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