ASME B16.47 Series A Flanges | MSS SP-44 | 26 to 60 Inch

PM Industries manufactures, supplies, and stocks ASME B16.47 Series A flanges, large-diameter steel flanges for piping that needs strong, standardized connections in hard industrial service. The standard covers nominal pipe sizes from NPS 26 through NPS 60. These flanges are used in oil and gas pipelines, refineries, power plants, water transmission systems, and other heavy-duty process work, where large-bore piping has to take high pressure and mechanical stress safely.

Series A flanges carry a heavier section and a larger bolt pattern than Series B, which gives more strength and rigidity in critical service. They are most often supplied as weld neck and blind flanges, in pressure classes 75, 150, 300, 400, 600, and 900, so you can match the rating to the system. A main strength is that they support high-integrity joints in large pipelines, where leak prevention and long-term durability really matter. Their size and design suit new pipeline projects and large process installations that have to perform under stress, vibration, and changing operating conditions.

The flanges can be made from forged, cast, or plate material, depending on the type and service, and blind flanges are often made from plate as the standard allows. Choosing the right gasket, bolting, and face finish keeps the seal tight and the installation smooth. Next to smaller flange standards, ASME B16.47 Series A gives the dimensional consistency and structural strength that very large piping networks need. That combination is why engineers and fabricators reach for it on large-diameter lines with demanding pressure and safety requirements. As a manufacturer, supplier, and stockist, PM Industries ships standard and custom Series A flanges against fast quotes.

Specification ASME B16.47 Series A Flange

Standards	ANSI/ASME B16.5, B16.48, ANSI Flanges, GOST Flanges, DIN Flanges, EN-1092, B16.47 Series A & B, ASME Flanges, EN Flanges, AWWA Flanges, BS Flanges.
JIS Standard	5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
DIN FLANGES	DIN 2527, 2627, 2631, 2656, 2576, 2673, 2629, 2628, 2566, 2641, 2637, 2655, 2634, 2636, 2632, 2633, 2638, 2642, 2573, 2635.
Pressure Rating	Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Types	Threaded, Plate, Screwed, Forged.
Supporting material	Gasket, Ring Joint, Flange Bolts
Size range	1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Production technique	Forged, machined and Heat treated
Available Flange Type	Weld Neck Flanges, RTJ Flanges, Slip On Flanges, Spectacle Blind Flanges, Flanges Gaskets, Square Flanges, Standard Insert Flanges, High Hub Blinds Flanges, Flat Flanges, forged flanges, Weldo / Nipo Flanges, Jacket Insert Flanges, Tongue groove Flanges, Blind Flanges, Socket Weld Flanges, Large diameter Flanges, Long Weld Neck Flanges, Spacer Blinds, SWRF Flanges, SORF Flanges, Angle Face Rings Flanges, Spades Ring Spacers Flanges, WNRF Flanges, Screwed Flanges, Insert Flanges, flanges bolts, cf flange, Lap Joint Flanges, ASME B16.36 Orifice Flanges, Plate Flange, Expander Flanges, Ring Type Joint Flanges, Loose Flanges, Reducing Flanges, puddle flange, Threaded Flanges, blank flange, vacuum flange.
Connect Type/ Flange Face Type	Ring Type Joint (RTJ), Flat Face (FF), Tongue & Groove, Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Tongue.
Custom design	As per your drawing
Test	Direct-reading Spectrograph, X-ray detector, UItrasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine.
Origin	Indian / USA / Korean / West Europe / Japan
Pressure Class	PN 6 TO PN 100
Thickness	Normal Pipe Size ≤ 18
Bore Diameter	Normal Pipe ≤ 10
High Temperature	Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low Temperature	Above -29 Degree C (−20°F)
Coating/Surface Treatment:	Zinc Plated, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized.
European/African/Russian Standard Flanges	Available
Gaskets Types	Full Face, Metallic Ring, Flat Ring Gasket
Marking Standard	Name of Manufacturer
	Schedule
	Type of Flange Facing
	Pressure Class
	Nominal Pipe Size, etc
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
	Raw Materials Certificate
	100% Radiography Test Report
	Third Party Inspection Report, etc

Flange Type Available

ANSI B16.47 Series A Flange Dimensions/Weight chart

Thickness	Drilling	Weight
Nom Size	OD	Weld Neck	Blind	OD of RF	Dia at Base	LTH	Dia Bevel	Bolt Circle	Bolt Length	HoleDia	# of Holes	Weld Neck	Blind
O	C	C	R	X	Y	A	(1)	(2)
26	34.25	2.63	2.63	29.5	26.62	4.69	26	31.75	8.75	1.38	24	300	702
28	36.5	2.75	2.75	31.5	28.62	4.88	28	34	9	1.38	28	345	833
30	38.75	2.88	2.88	33.75	30.75	5.32	30	36	9.25	1.38	28	400	982
32	41.75	3.13	3.13	36	32.75	5.63	32	38.5	10.5	1.62	28	505	1237
34	43.75	3.19	3.19	38	34.75	5.82	34	40.5	10.5	1.62	32	540	1384
36	46	3.5	3.5	40.25	36.75	6.13	36	42.75	11	1.62	32	640	1676
38	48.75	3.38	3.38	42.25	39	6.13	38	45.25	11	1.62	32	720	1819
40	50.75	3.5	3.5	44.25	41	6.38	40	47.25	11	1.62	36	775	2040
42	53	3.75	3.75	47	43	6.69	42	49.5	11.5	1.62	36	890	2381
44	55.25	3.94	3.94	49	45	6.94	44	51.75	12	1.62	40	990	2717
46	57.25	4	4	51	47.12	7.25	46	53.75	12	1.62	40	1060	2961
48	59.5	4.19	4.19	53.5	49.12	7.5	48	56	12.5	1.62	44	1185	3348
50	61.75	4.32	4.32	55.5	51.25	7.94	50	58.25	13.25	1.88	44	1270	3716
52	64	4.5	4.5	57.5	53.25	8.19	52	60.5	13.75	1.88	44	1410	4156
54	66.25	4.69	4.69	59.5	55.25	8.44	54	62.75	14	1.88	44	1585	4639
56	68.75	4.82	4.82	62	57.38	8.94	56	65	14.25	1.88	48	1760	5132
58	71	5	5	64	59.38	9.19	58	67.25	14.75	1.88	48	1915	5675
60	73	5.13	5.13	66	61.38	9.38	60	69.25	15	1.88	52	2045	6154