ASME B16.47 Class 150 Series A Flange

Common Materials:
– Carbon Steel: ASTM A105
– Stainless Steel: ASTM A182 F304/F316
– Low Alloy Steel: ASTM A350 LF2
– High Yield Carbon Steel: ASTM A694 F52/F65/F70

Common Dimensions:
– Size Range: 26″ to 60″ (DN650-DN1500) or larger
– Pressure Rating: Class 150 (150 PSI)
– Flange Facings: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF)

Product description

What is ASME B16.47 Class 150 Series A Flange

ASME B16.47 Class 150 Series A Flanges are large diameter flanges typically used in higher pressure and temperature applications, conforming to the American Society of Mechanical Engineers (ASME) standards. These flanges are rated for Class 150 pressure and are part of Series A, which specifies larger dimensions compared to Series B.

Common Materials:
– Carbon Steel: ASTM A105
– Stainless Steel: ASTM A182 F304/F316
– Low Alloy Steel: ASTM A350 LF2
– High Yield Carbon Steel: ASTM A694 F52/F65/F70

Common Dimensions:
– Size Range: 26″ to 60″ (DN650-DN1500) or larger
– Pressure Rating: Class 150 (150 PSI)
– Flange Facings: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF)

Production Processes:
Manufacturing ASME B16.47 Class 150 Series A Flanges involves precision machining and forging processes for larger diameters. Forged raw materials such as carbon steel, stainless steel, or alloy steel are shaped using forging machinery and then machined to achieve precise dimensions. CNC machining and other techniques ensure accuracy and quality.

Applications:
These flanges are commonly employed in industries requiring large-bore piping systems, including oil and gas, petrochemical, power generation, and chemical processing plants. Their usage is prevalent in pipelines carrying fluids or gases under moderate to high pressures and temperatures.

Dimensions of Class 150 Series A Flange

Nominal Size	Outside Diameter	Min. Thickness [Note1] – WNF	Min. Thickness [Note1] – Blind	Length Through Hub	Hub Dia. Base [Note2]	Hub Dia. Top	Raised Face Dia.	Drilling – Bolt Circle Dia.	Drilling – No. of Bolt Holes	Drilling – Dia. of Bolt Hole	Dia. of Bolt	Min. Fillet Radius
Nominal Size	(OD)	(tf)	(tf)	(Y)	(X)	(A)	(R)	Drilling – Bolt Circle Dia.	Drilling – No. of Bolt Holes	Drilling – Dia. of Bolt Hole	Dia. of Bolt	(r1)
26	34.25	2.63	2.63	4.69	26.62	26	29.5	31.75	24	13⁄8	11⁄4	0.38
28	36.5	2.75	2.75	4.88	28.62	28	31.5	34	28	13⁄8	11⁄4	0.44
30	38.75	2.88	2.88	5.32	30.75	30	33.75	36	28	13⁄8	11⁄4	0.44
32	41.75	3.13	3.13	5.63	32.75	32	36	38.5	28	15⁄8	11⁄2	0.44
34	43.75	3.19	3.19	5.82	34.75	34	38	40.5	32	15⁄8	11⁄2	0.5
36	46	3.5	3.5	6.13	36.75	36	40.25	42.75	32	15⁄8	11⁄2	0.5
38	48.75	3.38	3.38	6.13	39	38	42.25	45.25	32	15⁄8	11⁄2	0.5
40	50.75	3.5	3.5	6.38	41	40	44.25	47.25	36	15⁄8	11⁄2	0.5
42	53	3.75	3.75	6.69	43	42	47	49.5	36	15⁄8	11⁄2	0.5
44	55.25	3.94	3.94	6.94	45	44	49	51.75	40	15⁄8	11⁄2	0.5
46	57.25	4	4	7.25	47.12	46	51	53.75	40	15⁄8	11⁄2	0.5
48	59.5	4.19	4.19	7.5	49.12	48	53.5	56	44	15⁄8	11⁄2	0.5
50	61.75	4.32	4.32	7.94	51.25	50	55.5	58.25	44	17⁄8	13⁄4	0.5
52	64	4.5	4.5	8.19	53.25	52	57.5	60.5	44	17⁄8	13⁄4	0.5
54	66.25	4.69	4.69	8.44	55.25	54	59.5	62.75	44	17⁄8	13⁄4	0.5
56	68.75	4.82	4.82	8.94	57.38	56	62	65	48	17⁄8	13⁄4	0.5
58	71	5	5	9.19	59.38	58	64	67.25	48	17⁄8	13⁄4	0.5
60	73	5.13	5.13	9.38	61.38	60	66	69.25	52	17⁄8	13⁄4	0.5

Notes
Dimensions are in inches.

1) The minimum flange thickness does not include the raised face thickness
2) This dimension is for the large end of hub, which may be straight or tapered.
3) Weldneck Bore/ID is to be specified by purchaser
4) For other details and tolerances see specification.

Sino Special Metal Supply offers ASME B16.47 Class 150 Series A Flanges suitable for critical industrial applications. Their flanges adhere to international standards, ensuring reliability and performance in large-scale piping systems. Customers are encouraged to inquire about specific material grades, sizes, or custom requirements for their projects.