Big Diameter Flanges| Flanges Manufacturer in India

Big Diameter Flanges, Large Diameter Flanges Exporter, Big Diameter Flanges Manufacturer in India, SS Big Diameter Flanges Price, Best Quality Large Diameter Flanges, Carbon Steel Big Diameter Flanges Supplier, Stainless Steel Big Diameter Flanges Stockists in Mumbai, India

Nishra Overseas LLP is a famous supplier and manufacturer of high-quality Large Diameter Flanges. It is common practice to join pipes, pumps, valves, and other piping equipment with a large diameter flange. Our flange makes it simple to supervise, modify, and access clean pipes quickly. Large Diameter Flanges are used to block or join two pipes with considerably different sizes, as the name suggests. We offer these flanges, which are widely utilized in industrial services such as oil and gas pipelines and refineries. Our flanges are simple to install, making them effective in any environment, including harsh ones. Higher tensile strength and superior corrosion resistance are features of the large diameter flanges.

Big Diameter Flanges – IBR and Non-IBR, ANSI B16.5 Large Diameter Flanges, SS SOF Flanges Suppliers in India, Carbon Steel Big Diameter – IBR and Non-IBR Flanges Exporter Supplier, EN1092, ASME B16.5 Big Diameter Flanges Manufacturers.

Large diameter flanges, ASME B16.47, are used in high volume applications, such as water desalination operations. The ANSI B16.47 Series B Reducing Flange describes the flange's composition and standard, while ASME B16.47 Flanges describes the flange's kind and standard. An assortment of flanges with different compositions are ANSI B16.47 Big Daimeter Flanges. The Asme B16.47 series B slip-on flange is composed of carbon steel, while the Asme B16.47 blind flange is composed of nickel alloys.

Nishra Overseas manufactures Large Diameter Flanges in custom-made specs to meet the unique needs of our valued customers throughout the world. Our qualified expert team supervises the manufacturing process, which employs innovative machinery and technological breakthroughs. Our professionals fabricate flanges using high quality alloy material. The material is chosen in accordance with international material standards to make efficient flanges. We provide Large Diameter Flanges that have great benefits such as high strength, robustness, ease of installation, dimensional precision, and cost-efficiency. We do the development in compliance with national and international norms and specifications to produce flanges that are dimensionally precise.

We are a Stainless Steel Large Diameter Flange manufacturer in India, and we offer these Inconel Large Diameter Flange, Hastelloy Large Diameter Flange, Monel Large Diameter Flange, Alloy 20 Large Diameter Flange, Aluminium Large Diameter Flange, Nickel Large Diameter Flange, Duplex Large Diameter Flange, Super Duplex Large Diameter Flange, Incoloy Large Diameter Flange, Copper Large Diameter Flange, Copper Nickel Large Diameter Flange, Brass Large Diameter Flange, 254 Smo Large Diameter Flange, and Titanium Large Diameter Flange in all standards that are common in the world.

Large Diameter Specification

Size	1/2″ (15 NB) to 48″ (1200NB)
Standards	ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure Ratings	Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 \| PN6, PN10, PN16, PN25, PN40, PN64 etc.
Carbon Steel Slip On Flanges/ SORF Flanges	ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
Stainless Steel Slip On Flanges/ SORF Flanges	ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Alloy Steel Slip On Flanges/ SORF Flanges	ASTM A182 F1, F5, F9, F11, F22, F91
Special Alloy Slip On Flanges/ SORF Flanges	Duplex, Super Duplex, Nickel Alloys
Flange Face Type	Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Coating/Surface Treatment	Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Value Added Services	CNC Machining, Customised Flanges

Flange Dimensions of ASME B16.47 Series A Class 150

NPS	(OD)	Minimum Thickness WNF (t_f)	Minimum Thickness Blind (t_f)	Length Through Of Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Diameter Top (A)	RF Diameter (R)	Drilling – Bolt Circle Diameter	Drilling – Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	34.25	2.63	2.63	4.69	26.62	26.00	29.50	31.75	24	1³\₈	1¹\₄	0.38
28	36.50	2.75	2.75	4.88	28.62	28.00	31.50	34.00	28	1³⁄₈	1¹⁄₄	0.44
30	38.75	2.88	2.88	5.32	30.75	30.00	33.75	36.00	28	1³⁄₈	1¹⁄₄	0.44
32	41.75	3.13	3.13	5.63	32.75	32.00	36.00	38.50	28	1⁵⁄₈	1¹⁄₂	0.44
34	43.75	3.19	3.19	5.82	34.75	34.00	38.00	40.50	32	1⁵⁄₈	1¹⁄₂	0.50
36	46.00	3.50	3.50	6.13	36.75	36.00	40.25	42.75	32	1⁵⁄₈	1¹⁄₂	0.50
38	48.75	3.38	3.38	6.13	39.00	38.00	42.25	45.25	32	1⁵⁄₈	1¹⁄₂	0.50
40	50.75	3.50	3.50	6.38	41.00	40.00	44.25	47.25	36	1⁵⁄₈	1¹⁄₂	0.50
42	53.00	3.75	3.75	6.69	43.00	42.00	47.00	49.50	36	1⁵⁄₈	1¹⁄₂	0.50
44	55.25	3.94	3.94	6.94	45.00	44.00	49.00	51.75	40	1⁵⁄₈	1¹⁄₂	0.50
46	57.25	4.00	4.00	7.25	47.12	46.00	51.00	53.75	40	1⁵⁄₈	1¹⁄₂	0.50
48	59.50	4.19	4.19	7.50	49.12	48.00	53.50	56.00	44	1⁵⁄₈	1¹⁄₂	0.50
50	61.75	4.32	4.32	7.94	51.25	50.00	55.50	58.25	44	1⁷⁄₈	1³⁄₄	0.50
52	64.00	4.50	4.50	8.19	53.25	52.00	57.50	60.50	44	1⁷⁄₈	1³⁄₄	0.50
54	66.25	4.69	4.69	8.44	55.25	54.00	59.50	62.75	44	1⁷⁄₈	1³⁄₄	0.50
56	68.75	4.82	4.82	8.94	57.38	56.00	62.00	65.00	48	1⁷⁄₈	1³⁄₄	0.50
58	71.00	5.00	5.00	9.19	59.38	58.00	64.00	67.25	48	1⁷⁄₈	1³⁄₄	0.50
60	73.00	5.13	5.13	9.38	61.38	60.00	66.00	69.25	52	1⁷⁄₈	1³⁄₄	0.50

Flange Dimensions of ASME B16.47 Series A Class 300

NPS	(OD)	Minimum Thickness [Note1] WNF (t_f)	Minimum Thickness [Note1] Blind (t_f)	Length Through Of Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Diameter Top (A)	RF Diameter (R)	Drilling – Bolt Circle Diameter	Drilling – Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	38.25	3.07	3.25	7.19	28.38	26.00	29.50	34.50	28	1³⁄₄	1⁵⁄₈	0.38
28	40.75	3.32	3.50	7.69	30.50	28.00	31.50	37.00	28	1³⁄₄	1⁵⁄₈	0.44
30	43.00	3.57	3.69	8.19	32.56	30.00	33.75	39.25	28	1⁷⁄₈	1³⁄₄	0.44
32	45.25	3.82	3.88	8.69	34.69	32.00	36.00	41.50	28	2	1⁷⁄₈	0.44
34	47.50	3.94	4.07	9.07	36.88	34.00	38.00	43.50	28	2	1⁷⁄₈	0.50
36	50.00	4.07	4.32	9.44	39.00	36.00	40.25	46.00	32	2¹⁄₈	2	0.50
38	46.00	4.19	4.19	7.06	39.12	38.00	40.50	43.00	32	1⁵⁄₈	1¹⁄₂	0.50
40	48.75	4.44	4.44	7.56	41.25	40.00	42.75	45.50	32	1³⁄₄	1⁵⁄₈	0.50
42	50.75	4.63	4.63	7.82	43.25	42.00	44.75	47.50	32	1³⁄₄	1⁵⁄₈	0.50
44	53.25	4.82	4.82	8.06	45.25	44.00	47.00	49.75	32	1⁷⁄₈	1³⁄₄	0.50
46	55.75	5.00	5.00	8.44	47.38	46.00	49.00	52.00	28	2	1⁷⁄₈	0.50
48	57.75	5.19	5.19	8.75	49.38	48.00	51.25	54.00	32	2	1⁷⁄₈	0.50
50	60.25	5.44	5.44	9.07	51.38	50.00	53.50	56.25	32	2¹⁄₈	2	0.50
52	62.25	5.63	5.63	9.32	53.38	52.00	55.50	58.25	32	2¹⁄₈	2	0.50
54	65.25	5.94	5.94	9.88	55.50	54.00	57.75	61.00	28	2³⁄₈	2¹⁄₄	0.50
56	67.25	6.00	6.00	10.19	57.62	56.00	59.75	63.00	28	2³⁄₈	2¹⁄₄	0.50
58	69.25	6.19	6.19	10.44	59.62	58.00	62.00	65.00	32	2³⁄₈	2¹⁄₄	0.50
60	71.25	6.38	6.38	10.69	61.62	60.00	64.00	67.00	32	2³⁄₈	2¹⁄₄	0.50

Flange Dimensions of ASME B16.47 Series A Class 400

NPS	Outside Diameter (OD)	Minimum Thickness [Note1] – WNF (t_f)	Minimum Thickness [Note1] – Blind (t_f)	Length Through Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Dia. Top (A)	Raised Face Dia. (R)	Drilling – Bolt Circle Diameter	Drilling- Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	38.25	3.50	3.88	7.62	28.62	26.00	29.50	34.50	28	1⁷₈	1³₄	0.44
28	40.75	3.75	4.12	8.12	30.81	28.00	31.50	37.00	28	2	1⁷₈	0.50
30	43.00	4.00	4.38	8.62	32.94	30.00	33.75	39.25	28	2¹₈	2	0.50
32	45.25	4.25	4.56	9.12	35.00	32.00	36.00	41.50	28	2¹₈	2	0.50
34	47.50	4.38	4.81	9.50	37.19	34.00	38.00	43.50	28	2¹₈	2	0.56
36	50.00	4.50	5.06	9.88	39.38	36.00	40.25	46.00	32	2¹₈	2	0.56
38	47.50	4.88	4.88	8.12	39.50	38.00	40.75	44.00	32	1⁷₈	1³₄	0.56
40	50.00	5.12	5.12	8.50	41.50	40.00	43.00	46.25	32	2	1⁷₈	0.56
42	52.00	5.25	5.25	8.81	43.62	42.00	45.00	48.25	32	2	1⁷₈	0.56
44	54.50	5.50	5.50	9.18	45.62	44.00	47.25	50.50	32	2¹₈	2	0.56
46	56.75	5.75	5.75	9.62	47.75	46.00	49.50	52.75	36	2¹₈	2	0.56
48	59.50	6.00	6.00	10.12	49.88	48.00	51.50	55.25	28	2³₈	2¹₄	0.56
50	61.75	6.19	6.25	10.56	52.00	50.00	53.62	57.50	32	2³₈	2¹₄	0.56
52	63.75	6.38	6.44	10.88	54.00	52.00	55.62	59.50	32	2³₈	2¹₄	0.56
54	67.00	6.69	6.75	11.38	56.12	54.00	57.88	62.25	28	2⁵₈	2¹₂	0.56
56	69.00	6.88	6.94	11.75	58.25	56.00	60.12	64.25	32	2⁵₈	2¹₂	0.56
58	71.00	7.00	7.12	12.06	60.25	58.00	62.12	66.25	32	2⁵₈	2¹₂	0.56
60	74.25	7.31	7.44	12.56	62.38	60.00	64.38	69.00	32	2⁷₈	2³₄	0.56

Flange Dimensions of ASME B16.47 Series A Class 600

Normal Pipe Size Of Flange	Outside Diameter	Min. Thickness Of		Outside Daimeter of Raised Face	Hub Daimeter	Length Thru Hub	Approx. Weight Table In (lbs)		Drilling
Normal Pipe Size Of Flange	Outside Diameter	WN Flange	BLRF Flange	Outside Daimeter of Raised Face	Hub Daimeter	WN Flange	WN Flange	BLRF Flange	Number Holes	Diameter Holes	Bolt Circle Diameter
26	40	4.25	4.94	29.50	29.44	8.75	940	1760	28	2	36
28	42.25	4.38	5.19	31.50	31.62	9.25	160	2061	28	2.12	38
30	44.50	4.50	5.50	33.75	33.94	9.75	1210	2423	28	2.12	40.25
32	47	4.63	5.81	36	36.15	10.25	1375	2858	28	2.38	42.50
34	49	4.75	6.06	38	38.31	10.62	1540	3237	28	2.38	44.50
36	51.75	4.88	6.38	40.25	40.62	11.12	1705	3800	28	2.62	47
38	50	6	6.12	41.50	40.25	10	1470	3405	28	2.38	45.75
40	52	6.25	6.38	43.75	42.25	10.38	1630	3838	32	2.38	47.75
42	55.25	6.63	6.75	46	44.38	11	2030	4585	28	2.62	50.50
44	57.25	6.81	7	48.25	46.50	11.38	2160	5105	32	2.62	52.50
46	59.50	7.06	7.31	50.25	48.62	11.81	2410	5758	32	2.62	54.75
48	62.75	7.44	7.69	52.50	50.75	12.44	2855	6737	32	2.88	57.50
50	65.75	7.75	8	54.50	52.88	12.94	3330	7695	28	3.12	60
52	67.75	8	8.25	56.50	54.88	13.25	3560	8425	32	3.12	62
54	70	8.25	8.56	58.75	57	13.75	3920	9333	32	3.12	64.25
56	73	8.56	8.88	60.75	59.12	14.25	4280	10530	32	3.38	66.75
58	75	8.75	9.12	63	61.12	14.56	4640	11414	32	3.38	68.75
60	78.50	9.19	9.56	65.25	63.38	15.31	5000	13108	28	3.62	71.75

Flange Dimensions of ASME B16.47 Series A Class 900

NPS	Outside Diameter (OD)	Minimum Thickness [Note1] – WNF (t_f)	Minimum Thickness [Note1] – Blind (t_f)	Length Through Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Dia. Top (A)	Raised Face Dia. (R)	Drilling – Bolt Circle Diameter	Drilling – Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	42.75	5.50	6.31	11.25	30.50	26.00	29.50	37.50	20	2⁷₈	2³₄	0.44
28	46.00	5.62	6.75	11.75	32.75	28.00	31.50	40.25	20	3¹₈	3	0.50
30	48.50	5.88	7.18	12.25	35.00	30.00	33.75	42.75	20	3¹₈	3	0.50
32	51.75	6.25	7.62	13.00	37.25	32.00	36.00	45.50	20	3³₈	3¹₄	0.50
34	55.00	6.50	8.06	13.75	39.62	34.00	38.00	48.25	20	3⁵₈	3¹₂	0.56
36	57.50	6.75	8.44	14.25	41.88	36.00	40.25	50.75	20	3⁵₈	3¹₂	0.56
38	57.50	7.50	8.50	13.88	42.25	38.00	43.25	50.75	20	3⁵₈	3¹₂	0.75
40	59.50	7.75	8.81	14.31	44.38	40.00	45.75	52.75	24	3⁵₈	3¹₂	0.81
42	61.50	8.12	9.12	14.62	46.31	42.00	47.75	54.75	24	3⁵₈	3¹₂	0.81
44	64.88	8.44	9.56	15.38	48.62	44.00	50.00	57.62	24	3⁷₈	3³₄	0.88
46	68.25	8.88	10.06	16.18	50.88	46.00	52.50	60.50	24	4¹₈	4	0.88
48	70.25	9.19	10.38	16.50	52.88	48.00	54.50	62.50	24	4¹⁄₈	4	0.94

Flange Dimensions of ASME B16.47 Series B Class 150

NPS	(OD)	Minimum Thickness [Note1] WNF (t_f)	Minimum Thickness [Note1] Blind (t_f)	Length Through Of Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Diameter Top (A)	RF Diameter (R)	Drilling – Bolt Circle Diameter	Drilling – Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	30.94	1.57	1.69	3.44	26.94	26.06	28.00	29.31	36	⁷\₈	³\₄	0.38
28	32.94	1.69	1.82	3.69	28.94	28.06	30.00	31.31	40	⁷\₈	³\₄	0.38
30	34.94	1.69	1.94	3.88	31.00	30.06	32.00	33.31	44	⁷\₈	³\₄	0.38
32	37.06	1.75	2.07	4.19	33.06	32.06	34.00	35.44	48	⁷\₈	³\₄	0.38
34	39.56	1.88	2.19	4.28	35.12	34.06	36.25	37.69	40	1	⁷\₈	0.38
36	41.62	2.00	2.25	4.57	37.19	36.06	38.25	39.75	44	1	⁷\₈	0.38
38	44.25	2.07	2.44	4.82	39.25	38.12	40.25	42.12	40	1¹\₈	1	0.38
40	46.25	2.13	2.57	5.00	41.31	40.12	42.50	44.12	44	1¹\₈	1	0.38
42	48.25	2.25	2.63	5.19	43.38	42.12	44.50	46.12	48	1¹\₈	1	0.44
44	50.25	2.32	2.75	5.32	45.38	44.12	46.50	48.12	52	1¹\₈	1	0.44
46	52.81	2.38	2.88	5.63	47.44	46.12	48.62	50.56	40	1¹\₄	1¹\₈	0.44
48	54.81	2.50	3.00	5.82	48.50	48.12	50.75	52.56	44	1¹\₄	1¹\₈	0.44
50	56.81	2.63	3.13	6.00	51.50	50.12	52.75	54.56	48	1¹\₄	1¹\₈	0.44
52	58.81	2.69	3.25	6.13	53.56	52.12	54.75	56.56	52	1¹\₄	1¹\₈	0.44
54	61.00	2.75	3.38	6.32	55.62	54.12	56.75	58.75	56	1¹\₄	1¹\₈	0.44
56	63.00	2.82	3.50	6.50	57.69	56.12	58.75	60.75	60	1¹\₄	1¹\₈	0.56
58	65.94	2.88	3.62	6.82	59.69	58.12	60.75	63.44	48	1³\₈	1¹\₄	0.56
60	67.94	2.94	3.75	7.00	61.81	60.12	63.00	65.44	52	1³\₈	1¹\₄	0.56

Flange Dimensions of ASME B16.47 Series B Class 300

NPS	(OD)	Minimum Thickness [Note1] WNF (t_f)	Minimum Thickness [Note1] Blind (t_f)	Length Through Of Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Diameter Top (A)	RF Diameter (R)	Drilling – Bolt Circle Diameter	Drilling – Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	34.12	3.44	3.44	5.63	27.62	26.19	29.00	31.62	32	1³\₈	1¹\₄	0.56
28	36.25	3.44	3.44	5.81	29.75	28.19	31.00	33.75	36	1³\₈	1¹\₄	0.56
30	39.00	3.63	3.63	6.16	32.00	30.25	33.25	36.25	36	1¹\₂	1³\₈	0.56
32	41.50	4.00	4.00	6.56	34.00	32.35	35.50	38.50	32	1⁵\₈	1¹\₂	0.62
34	43.62	4.00	4.00	6.75	36.12	34.25	37.50	40.62	36	1⁵\₈	1¹\₂	0.62
36	46.12	4.00	4.00	7.06	38.00	36.25	39.75	42.88	32	1³\₄	1⁵\₈	0.62
38	48.12	4.31	4.31	7.50	40.00	38.25	41.75	44.88	36	1³\₄	1⁵\₈	0.62
40	50.12	4.50	4.50	7.75	42.00	40.25	43.88	46.88	40	1³\₄	1⁵\₈	0.62
42	52.50	4.63	4.63	8.00	44.00	42.31	46.00	49.00	36	1⁷\₈	1³\₄	0.62
44	54.50	4.94	4.94	8.38	46.19	44.31	48.00	51.00	40	1⁷\₈	1³\₄	0.62
46	57.50	5.00	5.06	8.69	48.38	46.31	50.00	53.75	36	2	1⁷\₈	0.62
48	59.50	5.00	5.25	8.75	50.31	48.31	52.25	55.75	40	2	1⁷\₈	0.62
50	61.50	5.38	5.44	9.19	52.38	50.31	54.25	57.75	44	2	1⁷\₈	0.62
52	63.50	5.56	5.61	9.50	54.44	52.31	56.25	59.75	48	2	1⁷\₈	0.62
54	65.88	5.32	5.81	9.38	56.50	54.31	58.25	62.12	48	2	1⁷\₈	0.62
56	69.50	6.00	6.12	10.50	58.81	56.31	60.50	65.00	36	2³\₈	2¹\₄	0.69
58	71.94	6.00	6.31	10.75	60.94	58.31	62.75	67.44	40	2³\₈	2¹\₄	0.69
60	73.94	5.88	6.50	10.63	62.94	60.31	65.00	69.44	40	2³\₈	2¹\₄	0.69

Flange Dimensions of ASME B16.47 Series B Class 400

NPS	(OD)	Minimum Thickness [Note1] WNF (t_f)	Minimum Thickness [Note1] Blind (t_f)	Length Through Of Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Diameter Top (A)	RF Diameter (R)	Drilling – Bolt Circle Diameter	Drilling – Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	33.50	3.50	3.50	5.88	27.12	26.00	28.00	30.75	28	1¹\₂	1³\₈	0.44
28	36.00	3.75	3.75	6.25	29.12	28.00	30.00	33.00	24	1⁵\₈	1¹\₂	0.50
30	38.25	4.00	4.00	6.69	31.25	30.00	32.25	35.25	28	1⁵\₈	1¹\₂	0.50
32	40.75	4.25	4.25	7.06	33.25	32.00	34.38	37.50	28	1³\₄	1⁵\₈	0.50
34	42.75	4.38	4.38	7.38	35.38	34.00	36.50	39.50	32	1³\₄	1⁵\₈	0.56
36	45.50	4.69	4.69	7.88	37.50	36.00	38.62	42.00	28	1⁷\₈	1³\₄	0.56
38	47.50	4.88	4.88	8.12	39.50	38.00	40.75	44.00	32	1⁷\₈	1³\₄	0.56
40	50.00	5.12	5.12	8.50	41.50	40.00	43.00	46.25	32	2	1⁷\₈	0.56
42	52.00	5.25	5.25	8.81	43.62	42.00	45.00	48.25	32	2	1⁷\₈	0.56
44	54.50	5.50	5.50	9.18	45.62	44.00	47.25	50.50	32	2¹\₈	2	0.56
46	56.75	5.75	5.75	9.62	47.75	46.00	49.50	52.75	36	2¹\₈	2	0.56
48	59.50	6.00	6.00	10.12	49.88	48.00	51.50	55.25	28	2³\₈	2¹\₄	0.56
50	61.75	6.19	6.25	10.56	52.00	50.00	53.62	57.50	32	2³\₈	2¹\₄	0.56
52	63.75	6.38	6.44	10.88	54.00	52.00	55.62	59.50	32	2³\₈	2¹\₄	0.56
54	67.00	6.69	6.75	11.38	56.12	54.00	57.88	62.25	28	2⁵\₈	2¹\₂	0.56
56	69.00	6.88	6.94	11.75	58.25	56.00	60.12	64.25	32	2⁵\₈	2¹\₂	0.56
58	71.00	7.00	7.12	12.06	60.25	58.00	62.12	66.25	32	2⁵\₈	2¹\₂	0.56
60	74.25	7.31	7.44	12.56	62.38	60.00	64.38	69.00	32	2⁷\₈	2³\₄	0.56

Flange Dimensions of ASME B16.47 Series B Class 600

NPS	(OD)	Minimum Thickness [Note1] WNF (t_f)	Minimum Thickness [Note1] Blind (t_f)	Length Through Of Hub (Y)	Hub Diameter Base [Note2] (X)	Hub Diameter Top (A)	RF Diameter (R)	Drilling – Bolt Circle Diameter	Drilling – Number of Bolt Holes	Drilling – Diameter of Bolt Hole	Diameter of Bolt	Minimum Fillet Radius (r₁)
26	35.00	4.38	4.38	7.12	27.50	26.00	28.62	31.75	28	1³\₄	1⁵\₈	0.50
28	37.50	4.56	4.56	7.50	29.62	28.00	30.88	34.00	28	1⁷\₈	1³\₄	0.50
30	40.25	4.94	5.00	8.06	31.75	30.00	33.12	36.50	28	2	1⁷\₈	0.50
32	42.75	5.12	5.31	8.50	33.88	32.00	35.25	38.75	28	2¹\₈	2	0.50
34	45.75	5.56	5.68	9.19	36.00	34.00	37.50	41.50	24	2³\₈	2¹\₄	0.56
36	47.75	5.75	5.94	9.56	38.12	36.00	39.75	43.50	28	2³\₈	2¹\₄	0.56
38	50.00	6.00	6.12	10.00	40.25	38.00	41.50	45.75	28	2³\₈	2¹\₄	0.56
40	52.00	6.25	6.38	10.38	42.25	40.00	43.75	47.75	32	2³\₈	2¹\₄	0.56
42	55.25	6.62	6.75	11.00	44.38	42.00	46.00	50.50	28	2⁵\₈	2¹\₂	0.56
44	57.25	6.81	7.00	11.38	46.50	44.00	48.25	52.50	32	2⁵\₈	2¹\₂	0.56
46	59.50	7.06	7.31	11.81	48.62	46.00	50.25	54.75	32	2⁵\₈	2¹\₂	0.56
48	62.75	7.44	7.69	12.44	50.75	48.00	52.25	57.50	32	2⁷\₈	2³\₄	0.56
50	65.75	7.75	8.00	12.94	52.88	50.00	54.50	60.00	28	3¹\₈	3	0.56
52	67.75	8.00	8.25	13.25	54.88	52.00	56.50	62.00	32	3¹\₈	3	0.56
54	70.00	8.25	8.56	13.75	57.00	54.00	58.75	64.25	32	3¹\₈	3	0.56
56	73.00	8.56	8.88	14.25	59.12	56.00	60.75	66.75	32	3³\₈	3¹\₄	0.62
58	75.00	8.75	9.12	14.56	61.12	58.00	63.00	68.75	32	3³\₈	3¹\₄	0.62
60	78.50	9.19	9.56	15.31	63.38	60.00	65.25	71.75	28	3⁵\₈	3¹\₂	0.69

Difference Between ASME B16.5 And ASME B16.47?

ASME B16.5 components are used to connect two pipes or a pipe to other components in a system. They could be joined with bolts and nuts or by welding. ANSI B16.5 is part of the standard B16.5. Industrial flanges are classified under classes 150-2500, with diameters ranging from ¼ inch to 24.

ASME B16.47 nominal pipe sizes range from 26 inches to 60 inches. Large Diameter Flanges are a type with a blind end. This is commonly utilized in fluid flow systems if the pipe needs to be closed. ASME B16.47 Series A Flanges can vary depending on the material composition, however they are typically heavier than ASME B16.47 Series B Flanges.

Big Diameter Flanges Applications

Oil and Gas Processing	Dairy and Food Processing
Desalination	Pesticides
Pulp and Paper	Sugar Factory
Energy industries	Power Plants
Ship Building	Fertilizers
Machine Building	Nuclear
Pharmaceuticals	Chemicals
Textile Machinery	Synthetic Fibers
Construction	Modern Architecture
Refinery & Petrochemicals	Water treatment facilities

Big Diameter Flanges Marking

Every Standards have clearly requirements for steel flanges’ marking style, usually the marking words include seller’s Logo, buyer’s Logo (OEM), standard number, flange’s type, flange’s pressure, flange’s size, flange’s material, place of origin, heat number and other words for convenient to trace. If the flanges repaired by welding, it must mark on flanges showing this flange repared by welding. If the flange’s dimensions (OD, ID, PCD, Thickness, Holes number, Holes diameter, Tolerance etc) are different with the normal standard, it also must mark on flanges where it is different with normal ones. Another important place is heat number marking, it is the tracing base for every piece flange, and from the heat number we can trace to the beginning of raw material import.

The Marking Style for European Standards Flanges, DIN, UNI, EN 1092-1 norms etc
LOGO, EN 1092-1, TYPE 01, PN16, DN80, 88.9, P265GH, HEAT NUMBER
The Marking Style for ANSI, ASME Standards Flanges, ANSI, ASME, AWWA norms etc LOGO, ASME B16.5, CLASS 150#, SLIP-ON RF, A105, HEAT NUMBER
The Marking Style For JIS, KS norms etc, special with KS Mark
LOGO, JIS B2220, 5K, 80A, SOP, SF440A, HEAT NUMBER, KS MARK
The Marking Style for BS 4504 norms etc
LOGO, BS 4504, WELD NECK, PN40, DN80, RSt37.2, HEAT NUMBER
The Marking Style for GOST 12820, GOST 12821 norms etc
LOGO, GOST 12820, PN1.6MPA, DN80, Q235B, HEAT NUMBER
The Marking Style for SABS 1123, SANS 1123 norms etc
LOGO, SABS 1123, CLASS 4000/3, NB80, A105, HEAT NUMBER

Big Diameter Flanges for Shipping, Handling, and Packaging

Carbon Steel Big Diameter Flanges and Stainless Steel Slip On Flanges are delivered with or without surface protection, as determined by the manufacturer.

The company delivers Big Diameter Flanges in standard packaging, without surface protection or end protectors (caps). Special packaging, protective covers, and end protectors (caps) can be agreed upon.