ANSI B16.5 Class 600 Welding Neck Flanges Outside Diameter 3.75-37in

Product Detail

• Bolt hole diameter 1/8 in. larger than bolt diameter.

• Standard bore dimensions provided. See bore chart for other wall thicknesses

• This dimension is commonly associated with "true" lap joints. Industry standard is to make to the slip on length through the hub..

 



 

ANSI B16.5 Class 600 Welding Neck Flanges
Nominal Pipe Size	Outside Diameter (O)	Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Point of Weld (A)	Hub Diameter (X)	Bore (B)	Approximate Weight (lbs)	Bolt Circle (C)	Number of Holes	Diameter of Holes
1/2	3.75	0.56	1.38	2.06	0.84	1.5	Specified by purchaser	2	2.63	4	0.63
3/4	4.63	0.63	1.69	2.25	1.05	1.88	Specified by purchaser	4	3.25	4	0.75
1	4.88	0.69	2	2.44	1.32	2.13	Specified by purchaser	4	3.5	4	0.75
1 1/4	5.25	0.81	2.5	2.63	1.66	2.5	Specified by purchaser	6	3.88	4	0.75
1 1/2	6.13	0.88	2.88	2.75	1.9	2.75	Specified by purchaser	8	4.5	4	0.88
2	6.5	1	3.63	2.88	2.38	3.31	Specified by purchaser	12	5	8	0.75
2 1/2	7.5	1.13	4.13	3.13	2.88	3.94	Specified by purchaser	18	5.88	8	0.88
3	8.25	1.25	5	3.25	3.5	4.63	Specified by purchaser	23	6.63	8	0.88
3 1/2	9	1.38	5.5	3.38	4	5.25	Specified by purchaser	26	7.25	8	1
4	10.75	1.5	6.19	4	4.5	6	Specified by purchaser	42	8.5	8	1
5	13	1.75	7.31	4.5	5.56	7.44	Specified by purchaser	68	10.5	8	1.13
6	14	1.88	8.5	4.63	6.63	8.75	Specified by purchaser	81	11.5	12	1.13
8	16.5	2.19	10.63	5.25	8.63	10.75	Specified by purchaser	120	13.75	12	1.25
10	20	2.5	12.75	6	10.75	13.5	Specified by purchaser	190	17	16	1.38
12	22	2.63	15	6.13	12.75	15.75	Specified by purchaser	225	19.25	20	1.38
14	23.75	2.75	16.25	6.5	14	17	Specified by purchaser	280	20.75	20	1.5
16	27	3	18.5	7	16	19.5	Specified by purchaser	390	23.75	20	1.63
18	29.25	3.25	21	7.25	18	21.5	Specified by purchaser	475	25.75	20	1.75
20	32	3.5	23	7.5	20	24	Specified by purchaser	590	28.5	24	1.75
22	34.25	3.75	25.25	7.75	22	26.25	Specified by purchaser	720	30.63	24	1.88
24	37	4	27.25	8	24	28.25	Specified by purchaser	830	33	24	2

 

NOTE:

1. Class 150 flanges except Lap Joint will be furnished with 0.06 (1.6mm) raised face, which is included in Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).

2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.

3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).

5. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.

6. Welding Neck Flange Bore Size SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100, SCH 120, SCH140, SCH160, XS