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Threaded Flange

Threaded Flanges are confined to special applications. Their chief merit lies in the fact that
they can be assembled without welding this explains their use in extremely high pressure
services, particularly at or near atmospheric temperature, when alloy steel is essential for
strength and where the necessary post weld heat treatment is impractical.

Threaded Flanges are unsuited for conditions involving temperature or bending stresses of any magnitude, particularly under cyclic conditions, where leakage through the threads may occur in relatively few cycles of heating or stress; sea welding is sometimes employed to overcome this, but cannot be considered as entirely satisfaction.

	Notes:-
	Flange dimensions to ANSI B16.5.
	Dimensions "B" & "D" includes raised face thickness.
	Larger outlet sizes are avilable on applications.
	ANSI 150# / 300# 2mm Raised Face
	ANSI 600# / 2500# 7mm Raised Face.

150#
Branch NB	A	B	D	E	F	Gx No	H	Weight kg
1/2" (15)	89	16	11.6	35.0	60.3	15.8 x 4	30	0.4
3/4" (20)	99	16	13.2	43.0	69.8	15.8 x 4	38	0.7
1" (25)	108	17	14.7	51.0	79.4	15.8 x 4	49	0.8
1 1/2" (40)	127	22	19.5	73.0	98.4	15.8 x 4	65	1.4
2" (50)	152	25	22.7	92.0	120.6	19.0 x 4	78	2.2
3" (80)	191	30	24.3	127.0	152.4	19.0 x 4	108	4.1
4" (100)	229	33	24.3	157.0	190.5	19.0 x 8	135	5.6
6" (150)	279	40	25.9	215.0	241.3	22.2 x 8	192	7.5

300#
Branch NB	A	B	D	E	F	Gx No	H	Weight kg
1/2" (15)	96	22	14.7	35.0	66.7	15.8 x 4	38	0.7
3/4" (20)	117	25	16.3	43.0	82.6	19.0 x 4	48	1.1
1" (25)	124	27	17.9	51.0	88.9	19.0 x 4	54	1.4
1 1/2" (40)	156	30	21.1	73.0	114.3	22.2 x 4	70	2.6
2" (50)	165	33	22.7	92.0	127.0	19.0 x 8	84	3.4
3" (80)	210	43	29.0	127.0	168.3	22.2 x 8	118	6.1
4" (100)	254	48	32.2	157.0	200.0	22.2 x 8	146	10.1
6" (150)	318	52	37.0	215.0	269.0	22.2 x 12	206	14.1

600#
Branch NB	A	B	D	E	F	Gx No	H	Weight kg
1/2" (15)	96	29	21.3	35.0	67	15.8 x 4	38	0.8
3/4" (20)	117	32	22.9	43.0	83	19.0 x 4	48	1.4
1" (25)	124	34	24.5	51.0	89	19.0 x 4	54	1.6
1 1/2" (40)	156	39	29.3	73.0	114.3	22.2 x 4	70	3.1
2" (50)	165	44	32.4	92.0	127.0	19.0 x 8	84	3.7
3" (80)	210	53	39.8	127.0	168.3	22.2 x 8	118	7.3
4" (100)	273	61	45.1	157.0	216	25.4 x 8	152	15.8
6" (150)	356	74	54.7	215.0	292	28.5 x 12	222	29.5

900#
Branch NB	A	B	D	E	F	Gx No	H	Weight kg
1/2" (15)	121	39	29.3	35.0	82.6	22.2 x 4	38	1.7
3/4" (20)	130	42	32.4	43.0	89	22.2 x 4	44	2.3
1" (25)	149	48	35.6	51.0	102	25.4 x 4	52	3.4
1 1/2" (40)	178	51	39.8	73.0	123.8	28.5 x 4	70	5.4
2" (50)	216	64	45.1	92.0	165	25.4 x 8	105	9.8
3" (80)	241	61	45.6	127.0	191	25.4 x 8	127	11.6
4" (100)	292	77	51.5	157.0	235.0	31.8 x 8	159	19.8
6" (150)	381	93	62.6	215.0	317.5	31.8 x 12	235	41.2

1500#
Branch NB	A	B	D	E	F	Gx No	H	Weight kg
1/2" (15)	121	39	29.3	35.0	83	22.2 x 4	38	1.7
3/4" (20)	130	42	32.4	43.0	89	22.2 x 4	44	2.4
1" (25)	149	48	35.6	51.0	102	25.4 x 4	52	3.5
1 1/2" (40)	178	51	39.8	73.0	123.8	28.5 x 4	70	5.5
2" (50)	216	64	45.1	92.0	165	25.4 x 8	105	10

2500#
Branch NB	A	B	D	E	F	Gx No	H	Weight kg
1/2" (15)	133	40	37.2	35.0	66.7	22.2 x 4	43	3.0
3/4" (20)	140	43	39.8	43.0	82.6	22.2 x 4	51	4.0
1" (25)	159	48	42.0	51.0	88.9	25.4 x 4	57	5.0
1 1/2" (40)	203	60	51.5	73.0	114.3	31.8 x 4	79	11.0
2" (50)	235	70	57.9	92.0	127.0	28.5 x 8	95	17.0

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