A105 Raised Face Weld Neck Flange

The A105 Raised Face Weld Neck Flange is an important component in piping systems, designed to provide a strong connection between pipes and equipment. Manufactured in accordance with ASME B16.5 specifications, this flange is constructed from carbon steel, ensuring its strength. The raised face design enhances the sealing surface, promoting a secure connection when used with gaskets.

Products
Governing Standards
Chemical Properties
Mechanical Properties
Dimensional Specifications

ASTM A105	Covers forged carbon steel piping components for ambient- and higher-temperature service in pressure systems. Included are flanges, fittings, Valves, and similar parts ordered either to dimensions specified by the purchaser or to dimensional standards.
ASME B16.11	Covers ratings, dimensions, tolerances, marking and material requirements for socket-welding and threaded forged fittings. These fittings are designated as Class 2000, 3000, and 6000 for threaded end fittings and Class 3000, 6000, and 9000 for socket-weld end fittings.

Dimensional Specifications

Dimensional SpecificationsA105 Raised Face Weld Neck Flange

Class #150 Dimensions						Bore	Drilling					Length of Bolts
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Hub	Diameter of Weld Neck	Weld Neck Length Through Hub	Weld Neck & Socket Weld Neck Bore	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Stud Bolts Raised Face 0.06 in.	Stud Bolts Ring Joint	Machine Bolts Raised Face 0.06 in.
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Hub	Diameter of Weld Neck	Weld Neck Length Through Hub	Weld Neck & Socket Weld Neck Bore	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Stud Bolts Raised Face 0.06 in.	Stud Bolts Ring Joint	Machine Bolts Raised Face 0.06 in.
	O.D.	C	W	K	Y1	B1	M				P	P	P
1/2	3.50	0.38	1.19	0.84	1.81	0.62	2.38	5/8	4.00	1/2	2.25		2.00
3/4	3.88	0.44	1.50	1.05	2.00	0.82	2.75	5/8	4.00	1/2	2.50		2.00
1	4.25	0.50	1.94	1.32	2.12	1.05	3.12	5/8	4.00	1/2	2.50	3.00	2.25
1 1/4	4.62	0.56	2.31	1.66	2.19	1.38	3.50	5/8	4.00	1/2	2.75	3.25	2.25
1 1/2	5.00	0.62	2.56	1.90	2.38	1.61	3.88	5/8	4.00	1/2	2.75	3.25	2.50
2	6.00	0.69	3.06	2.38	2.44	2.07	4.75	3/4	4.00	5/8	3.25	3.75	2.75
2 1/2	7.00	0.81	3.56	2.88	2.69	2.47	5.50	3/4	4.00	5/8	3.50	4.00	3.00
3	7.50	0.88	4.25	3.50	2.69	3.07	6.00	3/4	4.00	5/8	3.50	4.00	3.00
3 1/2	8.50	0.88	4.81	4.00	2.75	3.55	7.00	3/4	8.00	5/8	3.50	4.00	3.00
4	9.00	0.88	5.31	4.50	2.94	4.03	7.50	3/4	8.00	5/8	3.50	4.00	3.00
5	10.00	0.88	6.44	5.56	3.44	5.05	8.50	7/8	8.00	3/4	3.75	4.25	3.25
6	11.00	0.94	7.56	6.63	3.44	6.07	9.50	7/8	8.00	3/4	4.00	4.50	3.25
8	13.50	1.06	9.69	8.63	3.94	7.98	11.75	7/8	8.00	3/4	4.25	4.75	3.50
10	16.00	1.12	12.00	10.75	3.94	10.02	14.25	1	12.00	7/8	4.50	5.00	4.00
12	19.00	1.19	14.38	12.75	4.44	12.00	17.00	1	12.00	7/8	4.75	5.25	4.00
14	21.00	1.31	15.75	14.00	4.94	13.25	18.75	1 1/8	12.00	1	5.25	5.75	4.50
16	23.50	1.38	18.00	16.00	4.94	15.25	21.25	1 1/8	16.00	1	5.25	5.75	4.50
18	25.00	1.50	19.80	18.00	5.44	17.25	22.75	1 1/4	16.00	1 1/8	5.75	6.25	5.00
20	27.50	1.62	22.00	20.00	5.62	19.25	25.00	1 1/4	20.00	1 1/8	6.25	6.75	5.50
24	32.00	1.81	26.12	24.00	5.94	23.25	29.50	1 3/8	20.00	1 1/8	6.75	7.25	6.00

Class #300 Dimensions			Drilling				Length of Bolts						Bore
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Stud Bolts Raised Face 0.06 in.	Stud Bolts Ring Joint	Machine Bolts Raised Face 0.06 in.	Diameter of Hub	Diameter of Weld Neck	Weld Neck Length Through Hub	Weld Neck & Socket Weld Neck Bore
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Stud Bolts Raised Face 0.06 in.	Stud Bolts Ring Joint	Machine Bolts Raised Face 0.06 in.	Diameter of Hub	Diameter of Weld Neck	Weld Neck Length Through Hub	Weld Neck & Socket Weld Neck Bore
	O.D.	C	M				P	P	P	W	K	Y1	B1
1/2	3.75	0.5	2.62	5/8	4	1/2	2.50	3.00	2.25	1.50	0.84	2.00	0.62
3/4	4.62	0.56	3.25	3/4	4	5/8	3.00	3.50	2.50	1.88	1.05	2.19	0.82
1	4.88	0.62	3.5	3/4	4	5/8	3.00	3.50	2.50	2.12	1.32	2.38	1.05
1 1/4	5.25	0.69	3.88	3/4	4	5/8	3.25	3.75	2.75	2.50	1.66	2.50	1.38
1 1/2	6.12	0.75	4.50	7/8	4	3/4	3.50	4.00	3.00	2.75	1.90	2.63	1.61
2	6.50	0.81	5.00	3/4	8	5/8	3.50	4.00	3.00	3.31	2.38	2.69	2.07
2 1/2	7.50	0.94	5.88	7/8	8	3/4	4.00	4.50	3.25	3.94	2.88	2.94	2.47
3	8.25	1.06	6.62	7/8	8	3/4	4.25	4.75	3.50	4.62	3.50	3.06	3.07
3 1/2	9.00	1.12	7.25	7/8	8	3/4	4.25	5.00	3.75	5.25	4.00	3.13	3.55
4	10.00	1.19	7.88	7/8	8	3/4	4.50	5.00	3.75	5.75	4.50	3.32	4.03
5	11.00	1.31	9.25	7/8	8	3/4	4.75	5.25	4.25	7.00	5.56	3.82	5.05
6	12.50	1.38	10.62	7/8	12	3/4	4.75	5.50	4.25	8.12	6.63	3.82	6.07
8	15.00	1.56	13.00	1	12	7/8	5.50	6.00	4.75	10.25	8.63	4.32	7.98
10	17.50	1.81	15.25	1 1/8	16	1	6.25	6.75	5.50	12.62	10.75	4.56	10.02
12	20.50	1.94	17.75	1 1/4	16	1 1/8	6.75	7.25	5.75	14.75	12.75	5.06	12.00
14	23.00	2.06	20.25	1 1/4	20	1 1/8	7.00	7.50	6.25	16.75	14.00	5.56	13.25
16	25.50	2.19	22.50	1 3/8	20	1 1/4	7.50	8.00	6.50	19.00	16.00	5.69	15.25
18	28.00	2.31	24.75	1 3/8	24	1 1/4	7.75	8.25	6.75	21.00	18.00	6.19	17.25
20	30.50	2.44	27.00	1 3/8	24	1 1/4	8.00	8.75	7.25	23.12	20.00	6.32	19.25
24	36.00	2.69	32.00	1 5/8	24	1 1/2	9.00	10.00	8.00	27.62	24.00	6.56	23.25

Class #600 Dimensions			Drilling				Length of Bolts						Bore
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Diameter of Weld Neck	Weld Neck Length Through Hub	Weld Neck & Socket Weld Neck Bore
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Diameter of Weld Neck	Weld Neck Length Through Hub	Weld Neck & Socket Weld Neck Bore
	O.D.	C	M				P	P	P	W	K	Y1	B1
1/2	3.75	0.56	2.62	5/8	4	1/2	3.00	2.75	3.00	1.50	0.84	2.06	0.55
3/4	4.62	0.62	3.25	3/4	4	5/8	3.50	3.25	3.50	1.88	1.05	2.25	0.74
1	4.88	0.69	3.50	3/4	4	5/8	3.50	3.25	3.50	2.12	1.32	2.44	0.96
1 1/4	5.25	0.81	3.88	3/4	4	5/8	3.75	3.50	3.75	2.50	1.66	2.62	1.28
1 1/2	6.12	0.88	4.50	7/8	4	3/4	4.25	4.00	4.25	2.75	1.90	2.75	1.50
2	6.50	1.00	5.00	3/4	8	5/8	4.25	4.00	4.25	3.31	2.38	2.88	1.94
2 1/2	7.50	1.12	5.88	7/8	8	3/4	4.75	4.50	4.75	3.94	2.88	3.12	2.32
3	8.25	1.25	6.62	7/8	8	3/4	5.00	4.75	5.00	4.62	3.50	3.25	2.90
3 1/2	9.00	1.38	7.25	1	8	7/8	5.50	5.25	5.50	5.25	4.00	3.38	3.36
4	10.75	1.50	8.50	1	8	7/8	5.75	5.50	5.75	6.00	4.50	4.00	3.83
5	13.00	1.75	10.50	1 1/8	8	1	6.50	6.25	6.50	7.44	5.56	4.50	4.81
6	14.00	1.88	11.50	1 1/8	12	1	6.75	6.50	6.75	8.75	6.63	4.62	5.76
8	16.50	2.19	13.75	1 1/4	12	1 1/8	7.50	7.25	7.75	10.75	8.63	5.25	7.63
10	20.00	2.50	17.00	1 3/8	16	1 1/4	8.50	8.25	8.50	13.50	10.75	6.00	9.75
12	22.00	2.62	19.25	1 3/8	20	1 1/4	8.75	8.50	8.75	15.75	12.75	6.12	11.75
14	23.75	2.75	20.75	1 1/2	20	1 3/8	9.25	9.00	9.25	17.00	14.00	6.50	13.00
16	27.00	3.00	23.75	1 5/8	20	1 1/2	10.00	9.75	10.00	19.50	16.00	7.00	15.00
18	29.25	3.25	25.75	1 3/8	20	1 5/8	10.75	10.5	10.75	21.50	18.00	7.25	17.00
20	32.00	3.50	28.50	1 3/8	24	1 5/8	11.25	11.00	11.50	24.00	20.00	7.50	19.00
24	37.00	4.00	33.00	2	24	1 7/8	13.00	12.75	13.25	28.25	24.00	8.00	23.00

Class #900 Dimensions			Drilling				Length of Bolts				Length Through Hub	Bore
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Threaded Length Through Hub Neck	Slip-on Bore (Min.)	Thread Length (Min.)	Diameter of Weld Neck
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Threaded Length Through Hub Neck	Slip-on Bore (Min.)	Thread Length (Min.)	Diameter of Weld Neck
	O.D.	C	M				P	P	P	W	Y2	B2	T	K
1/2	4.75	0.88	3.25	7/8	4	3/4	4.25	4.00	4.25	1.50	1.25	0.88	0.88	0.84
3/4	5.12	1.00	3.50	7/8	4	3/4	4.50	4.25	4.50	1.75	1.38	1.09	1.00	1.05
1	5.88	1.12	4.00	1	4	7/8	5.00	4.75	5.00	2.06	1.62	1.36	1.12	1.32
1 1/4	6.25	1.12	4.38	1	4	7/8	5.00	4.75	5.00	2.5	1.62	1.70	1.19	1.66
1 1/2	7.00	1.25	4.88	1 1/8	4	1	5.50	5.25	5.50	2.75	1.75	1.95	1.25	1.90
2	8.50	1.50	6.50	1	8	7/8	5.75	5.50	5.75	4.12	2.25	2.44	1.50	2.38
2 1/2	9.62	1.62	7.50	1 1/8	8	1	6.25	6.00	6.25	4.88	2.5	2.94	1.88	2.88
3	9.50	1.50	7.50	1	8	7/8	5.75	5.50	5.75	5.00	2.12	3.57	1.62	3.50
4	11.50	1.75	9.25	1 1/4	8	1 1/8	6.75	6.50	6.75	6.25	2.75	4.57	1.88	4.50
5	13.75	2.00	11.00	1 3/8	8	1 1/4	7.50	7.25	7.50	7.50	3.12	5.66	2.12	5.56
6	15.00	2.19	12.50	1 1/4	12	1 1/8	7.50	7.25	7.75	9.25	3.38	6.72	2.25	6.63
8	18.50	2.50	15.50	1 1/2	12	1 3/8	8.75	8.50	8.75	11.75	4.00	8.72	2.50	8.63
10	21.50	2.75	18.50	1 1/2	16	1 3/8	9.25	9.00	9.25	14.5	4.25	10.88	2.81	10.75
12	24.00	3.12	21.00	1 1/2	20	1 3/8	10.00	9.75	10.00	16.50	4.62	12.88	3.00	12.75
14	25.25	3.38	22.00	1 5/8	20	1 1/2	10.75	10.50	11.00	17.75	5.12	14.14	3.25	14.00
16	27.75	3.50	24.25	1 3/4	20	1 5/8	11.25	11.00	11.50	20.00	5.25	16.16	3.38	16.00
18	31.00	4.00	27.00	2	20	1 7/8	12.75	12.5	13.25	22.25	6.00	18.18	3.50	18.00
20	33.75	4.25	29.50	2 1/8	20	2	13.75	13.50	14.25	24.50	6.25	20.20	3.62	20.00
24	41.00	5.50	35.50	2 5/8	20	2 1/2	17.25	17.00	18.00	29.50	8.00	24.25	4.00	24.00

Class #1500 Dimensions			Drilling				Length of Bolts				Length Through Hub	Bore
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Threaded Length Through Hub Neck	Slip-on Bore (Min.)	Thread Length (Min.)	Diameter of Weld Neck
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Threaded Length Through Hub Neck	Slip-on Bore (Min.)	Thread Length (Min.)	Diameter of Weld Neck
	O.D.	C	M				P	P	P	W	Y2	B2	T	K
1/2	4.75	0.88	3.25	7/8	4	3/4	4.25	4.00	4.25	1.50	1.25	0.88	0.88	0.84
3/4	5.12	1.00	3.50	7/8	4	3/4	4.50	4.25	4.50	1.75	1.38	1.09	1.00	1.05
1	5.88	1.12	4.00	1	4	7/8	5.00	4.75	5.00	2.06	1.62	1.36	1.12	1.32
1 1/4	6.25	1.12	4.38	1	4	7/8	5.00	4.75	5.00	2.50	1.62	1.70	1.19	1.66
1 1/2	7.00	1.25	4.88	1 1/8	4	1	5.50	5.25	5.50	2.75	1.75	1.95	1.25	1.90
2	8.50	1.50	6.50	1	8	7/8	5.75	5.50	5.75	4.12	2.25	2.44	1.50	2.38
2 1/2	9.62	1.62	7.50	1 1/8	8	1	6.25	6.00	6.25	4.88	2.50	2.94	1.88	2.88
3	10.50	1.88	8.00	1 1/4	8	1 1/8	7.00	6.75	7.00	5.25				3.50
4	12.25	2.10	9.50	1 3/8	8	1 1/4	7.75	7.50	7.75	6.38				4.50
5	14.75	2.88	11.50	1 5/8	8	1 1/2	9.75	9.50	9.75	7.75				5.56
6	15.50	3.25	12.50	1 1/2	12	1 3/8	10.25	10.00	10.50	9.00				6.63
8	19.00	3.62	15.50	1 3/4	12	1 5/8	11.50	11.25	11.75	11.50				8.63
10	23.00	4.25	19.00	2	12	1 7/8	13.25	13.00	13.50	14.50				10.75
12	26.50	4.88	22.50	2 1/8	16	2	14.75	15.50	15.25	17.75				12.75
14	29.50	5.25	25.00	2 3/8	16	2 1/4	16.00	15.75	16.75	19.50				14.00
16	32.50	5.75	27.75	2 5/8	16	2 1/2	17.50	17.25	18.50	21.75				16.00
18	36.00	6.38	30.50	2 7/8	16	2 3/4	19.5	19.25	20.75	23.50				18.00
20	38.75	7.00	32.75	3 1/8	16	3	21.25	21.00	22.25	25.25				20.00
24	46.00	8.00	39.00	3 5/8	16	3 1/2	24.25	24.00	25.50	30.00				24.00

Class #2500 Dimensions			Drilling				Length of Bolts				Length Through Hub
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Threaded Length Through Hub Neck	Thread Length (Min.)	Diameter of Weld Neck
Pipe Size	Outside Diameter of Flange	Thickness of Flange (Min.)	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolt Holes	Diameter of Bolts	Raised Face 0.25 in.	Tongue & Groove	Ring Joint	Diameter of Hub	Threaded Length Through Hub Neck	Thread Length (Min.)	Diameter of Weld Neck
	O.D.	C	M				P	P	P	W	Y2	T	K
1/2	5.25	1.19	3.50	7/8	4	3/4	4.75	4.50	4.75	1.69	1.56	1.12	0.84
3/4	5.50	1.25	3.75	7/8	4	3/4	5.00	4.75	5.00	2.00	1.69	1.25	1.05
1	6.25	1.38	4.25	1	4	7/8	5.50	5.25	5.50	2.25	1.88	1.38	1.32
1 1/4	7.25	1.50	5.12	1 1/8	4	1	6.00	5.75	6.00	2.88	2.06	1.50	1.66
1 1/2	8.00	1.75	5.75	1 1/4	4	1 1/8	6.75	6.50	6.75	3.12	2.38	1.75	1.90
2	9.25	2.00	6.75	1 1/8	8	1	7.00	6.75	7.00	3.75	2.75	2.00	2.38
2 1/2	10.50	2.25	7.75	1 1/4	8	1 1/8	7.75	7.50	8.00	4.5	3.12	2.25	2.88
3	12.00	2.62	9.00	1 3/8	8	1 1/4	8.75	8.50	9.00	5.25			3.50
4	14.00	3.00	10.75	1 5/8	8	1 1/2	10.00	9.75	10.25	6.5			4.50
5	16.50	3.62	12.75	1 7/8	8	1 3/4	11.75	11.50	12.25	8.00			5.56
6	19.00	4.25	14.50	2 1/8	8	2	13.50	13.25	14.00	9.25			6.63
8	21.75	5.00	17.25	2 1/8	12	2	15.00	14.75	15.50	12.00			8.63
10	26.50	6.50	21.25	2 5/8	12	2 1/2	19.25	19.00	20.00	14.75			10.75
12	30.00	7.25	24.38	2 7/8	12	2 3/4	21.25	21.00	22.00	17.38			12.75

No items were found

Element	Carbon	Manganese	Phosphorus	Sulfur	Silicon	Copper	Nickel	Chromium	Molybdenum	Vanadium

Composition, %	0.35 max	0.60-1.05	0.035 max	0.040 max	0.10-0.35	0.40 max (1)	0.40 max (1)	0.30 max (1-2)	0.12 max (1-2)	0.08 max

Per ASTM A105-A105M - 24
Grade A105	Tensile Strength	Yield Strength	Elongation in 4D	Reduction in Area	Hardness
Grade A105	Min ksi [MPa]	Min ksi [Mpa]	Min %	Min %	Max
	70 [485]	36 [250]	22	30	197

A105 Raised Face Weld Neck Flange

Technical Data

Governing Standards

Governing StandardsA105 Raised Face Weld Neck Flange

Chemical Properties

Chemical PropertiesA105 Raised Face Weld Neck Flange

Mechanical Properties

Mechanical PropertiesA105 Raised Face Weld Neck Flange

Dimensional Specifications

Dimensional SpecificationsA105 Raised Face Weld Neck Flange

Class #150 Dimensions

Class #300 Dimensions

Class #600 Dimensions

Class #900 Dimensions

Class #1500 Dimensions

Class #2500 Dimensions