ASME B16.47 Class 150 Series B Welding Neck Flanges Hub Diameter 26.94- 61.81 In

Size : 1/2"NB TO 60"NB IN Pressure: Class 75, Class 150, Class 300, Class 400, Class 600, Class 900 Standard: ANSI B16.47, ASME B16.47 Type: Welding Neck Flanges Process: Forged and Stamped Coating: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip...

Product Details

Size : 1/2"NB TO 60"NB IN

Pressure: Class 75, Class 150, Class 300, Class 400, Class 600, Class 900

Standard: ANSI B16.47, ASME B16.47

Type: Welding Neck Flanges

Process: Forged and Stamped

Coating: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Dimension:

ANSI/ASME B16.5, ANSI/ASME B16.47 Series A (MSS SP-44), ANSI/ASME B16.47 Series B (API 605),

ANSI/ASME B16.36, ANSI/ASME B16.48 (API 590)

3.1.2.jpg

ASME B16.47 Class 150 Series B Welding Neck Flanges
Nominal Pipe Size	Outside Diameter (O)	Maximum Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Hub Diameter (X)	Minimum Fillet Radius (r)	Top of Hub (A)	Bore (B)	Approximate Weight (lbs)	Bolt Circle (C)	Number of Holes	Diameter of Holes
26	30.94	1.62	28	3.5	26.94	0.38	26.06	Specified by purchaser	120	29.31	36	0.88
28	32.94	1.75	30	3.75	28.94	0.38	28.06	Specified by purchaser	140	31.31	40	0.88
30	34.94	1.75	32	3.94	31	0.38	30.06	Specified by purchaser	150	33.31	44	0.88
32	37.06	1.81	34	4.25	33.06	0.38	32.06	Specified by purchaser	170	35.44	48	0.88
34	39.56	1.94	36.25	4.34	35.12	0.38	34.06	Specified by purchaser	210	37.69	40	1
36	41.62	2.06	38.25	4.62	37.19	0.38	36.06	Specified by purchaser	240	39.75	44	1
38	44.25	2.12	40.25	4.88	39.25	0.38	38.12	Specified by purchaser	290	42.12	40	1.12
40	46.25	2.19	42.5	5.06	41.31	0.38	40.12	Specified by purchaser	310	44.12	44	1.12
42	48.25	2.31	44.5	5.25	43.38	0.44	42.12	Specified by purchaser	345	46.12	48	1.12
44	50.25	2.38	46.5	5.38	45.38	0.44	44.12	Specified by purchaser	370	48.12	52	1.12
46	52.81	2.44	48.62	5.69	47.44	0.44	46.12	Specified by purchaser	435	50.56	40	1.25
48	54.81	2.56	50.75	5.88	49.5	0.44	48.12	Specified by purchaser	480	52.56	44	1.25
50	56.81	2.69	52.75	6.06	51.5	0.44	50.12	Specified by purchaser	520	54.56	48	1.25
52	58.81	2.75	54.75	6.19	53.56	0.44	52.12	Specified by purchaser	550	56.56	52	1.25
54	61	2.81	56.75	6.38	55.62	0.44	54.12	Specified by purchaser	620	58.75	56	1.25
56	63	2.88	58.75	6.56	57.69	0.56	56.12	Specified by purchaser	650	60.75	60	1.25
58	65.94	2.94	60.75	6.88	59.69	0.56	58.12	Specified by purchaser	780	63.44	48	1.38
60	67.94	3	63	7.06	61.81	0.56	60.12	Specified by purchaser	850	65.44	52	1.38

The difference between ASME B16.47 Series A and Series B flanges

Generally speaking, ASME B16.47 Series A flanges are much thicker, heavier and stronger than Series B flanges in the same size and pressure rating thus can withstand more external loading than Series B type. Series B flanges need more but smaller fasteners (bolts & nuts) than Series A flanges and have a smaller bolt circle diameter than that of Series A flanges. The smaller the bolt circle diameter is, the less flange movement tends to occur. Both Series A and Series B define weld neck flanges and blind flanges in raised face type(RF) but only Series A defines ring type joint(RTJ) flanges from Class 300 through Class 900 within this standard. From a commercial point of view, ASME B16.47 Series A flanges are more expensive than Series B flanges. Most piping end users or designers may choose Series A flanges for the new pipeline or equipment. But if you are doing some refurbishment/replacement job or non-critical piping design, Series B flanges are more popular.

Previous: ASME B16.47 Class 75 Series B Welding Neck Flanges Length Thru Hub 2.31-5.44 in

Next: ASME B16.47 Class 300 Series B Welding Neck Flanges Top Of Hub 26.19-60.31 In