Copper Nickel Flange manufacturer in India

ASTM B171 UNS C70600 Blind Flange and 90/10 Copper Nickel Slip On Flange supplier in Mumbai

What is Copper Nickel Flanges?
The copper nickel flanges are made of cupro-nickel material that shows high resistance to saltwater corrosion. They are also resistant to biofouling, pitting, crevice corrosion and stress corrosion cracking in the chloride environments. The material is able to retain its properties even at an elevated temperature. The copper nickel flanges have high ductility and they show good thermal conductivity, even in cryogenic temperatures. With the addition of nickel content to the alloys, the flow rates and strength of the flanges can be increased. Due to all these useful properties, the copper nickel flanges are widely used in different types of applications like marine, shipbuilding and repair, offshore oil drilling, power generation, etc. They are also used in different condensers and heat exchangers. Thus, the copper nickel flanges show great performance in both marine and non-marine environments.
There are different types of flanges available in the market, and each have their unique usage:

• Weld neck flange- These are used in applications that involve severe and critical conditions.
• Slip-on flange- They are suitable for low pressure applications.
• Blind flange- They help to seal the ends of a piping system or pressure vessel opening.
• Lap joint flange- These are a type of slip-on flange that comes with stub-end fittings. They are great for piping systems that need regular inspection and maintenance, as they can be disassembled easily.
• Socket weld flange- These are used in small and high pressure pipes.
• Threaded flange- They are used in pipes with threaded ends.
• Orifice flange- They are used for accessing the line that helps to meter liquids or gases.
• Ring-type joint flange- They are mostly used for high temperature and pressure applications. They help reduce the risk of leakages.
• Reducing flange- These help in connecting one pipe to the other.
• Forged flange- They help in creating pipework web for valves, pipes, and similar other devices.

Choosing the right type of flange is essential for proper execution of operations, as not all flanges are capable of withstanding all types of environments.

How can you Join Cupro Nickel Flange to Cuni Pipe?
A flange can be described as the way of joining pipes, valves, and other similar equipment, through welding or screwing. The copper nickel flanges are resistant to corrosion, and are also known for their high ductility. They also possess good fabricability and are biofouling resistant. Depending on the type of flange that is needed to be attached to the pipe, it is decided whether welding or screwing is needed to attach the flange with the pipe. For example, the slip-on flanges must be slid into the pipe before it is welded. This flange would also need double welding. On the other hand, the threaded flange does not need welding; it is joined by screwing the flanges to the pipe. It does not need any seam welding.

Copper Nickel 70/30 Flanges vs 90/10 Copper Nickel Flanges
The basic difference between the Copper Nickel 70/30 Flanges and the 90/10 Copper Nickel Flanges, is in its chemical composition. The 70/30 flanges consist of 70% copper and 30% nickel, with trace amounts of other elements. Similarly, the 90/10 flanges have 90% copper with 10% nickel, along with trace amounts of other elements. Due to this difference in the chemical composition, they have some difference in their physical properties too. The 70/30 CuNi flanges are resistant to seawater due to the manganese and iron elements present in it. The 90/10 CuNi flanges offer high strength corrosion resistance, with enhanced ductility and toughness. They are widely used in industrial and architectural applications.
The strength of 70/30 CuNi flanges are slightly more compared to the 90/10 CuNi flanges, and that is why the former is used for more demanding applications. The 90/10 CuNi can be described as a cost-effective substitute of 70/30 CuNi flanges. Both of them are superior in resisting corrosion, but 90/10 CuNi flanges offer a slightly better performance compared to the 70/30 CuNi flanges.

What should you Consider when Buying Copper Nickel Slip On Flanges?
The CuNi slip-on flanges are suitable for low pressure applications. They come with easy installation and can be welded into different pipes. It is essential to check the quality of the raw material and also the flanges should go through all the required tests before they are delivered for real-life applications. Primarily, these flanges are used in saltwater environments, heat exchangers, desalination plants, etc.

Are there Special Surface Finish for Copper Nickel Pipe Flanges?
There are several types of surface finishes available for CuNi flanges, like:

• Stock Finish- here, the gasket formation takes place through a continuous spiral group. It is generated with the help of round-nose tools.
• Smooth Finish- It comes without a visible tool marking; this surface finish looks very smooth.
• Spiral serrated- It is quite similar to stock finish, except the fact that it comes with a “V” geometry.
• Concentric Serrated- This one comes with concentric grooves, and there are even serration spaces present throughout the face.
• Coldwater Finish- This one gives the flanges a finish that has a mirror-like appearance. This one is perfect to be used in metal to metal surface contacting, without the presence of any gasket.

Copper Nickel Flanges

Manufacturer of UNS C71500 Weld Neck Flange and Copper Nickel Blind Flange as per ASME B16.5

Table of Content

• Copper Nickel Flanges Specification
• Copper Nickel Flange Weight
• Pressure Rating of Copper Nickel Pipe Flanges
• Copper Nickel Flange Dimensions
• Standard Table of Cupro Nickel Flanges
• DIN Standard Cu Ni Flanges
• EEMUA 145 Standard Copper Nickel 70/30 Flanges
• Copper Nickel Flanges Price List
• DIN 86037 Flange Dimensions
• Dimension Table of Copper Nickel Slip On Flange
• Copper Nickel Blind Flange Dimensions
• Copper Nickel Threaded Flange Dimension Chart
• Dimension table of Class 150 70/30 Copper Nickel Flanges
• CL 300 Copper Nickel Composite Flanges Dimension
• 400 LBS Cupro Nickel 70-30 Flanges Dimension Table
• Dimension Chart of 600# Cupro Nickel 90/10 Flanges
• Class 900 UNS C70600 Flange Dimension
• Dimension Table of 1500 LBS UNS C71500 Flange
• CL 2500 70/30 Copper Nickel Flanges Dimension
• Types of Copper Nickel Flanges

• Cupro Nickel Flanges Chemical Composition
• Copper Nickel Composite Flange Mechanical Properties
• Cuni Flange Physical Properties
• Cupro Nickel Flanges Equivalent
• Working Temperature of Cupro nickel 70/30 Flanges?
• How can you Test the Quality of ASTM B171 UNS C70600 Flanges?
• How can you Measure Cuni Flanges?
• Can you Weld 90/10 Cu-Ni Flanges?
• Difference Between Cupronickel Slip-on VS Lap Joint Flanges
• What is Pitch Circle Diameter (PCD) on 70/30 Copper Nickel Flanges?
• How to Buy 90/10 Cu-Ni Flanges?
• Standard Specifications of Copper nickel 90/10 Flanges
• Applications of Cupro nickel 70/30 flanges
• Benefits of Copper Nickel 70/30 Flanges
• Classification of Copper Nickel Flange Forging
• Manufacturing Process Of Copper Nickel Forged Flanges
• Difference between ANSI and DIN Copper Nickel Flanges?

Copper Nickel Flanges Specification

Size Chart	1/2″(15 NB) to 48″ (1200NB)
Pressure Rating Chart ANSI	150 LBS, 300 LBS, 2500 LBS, 900 LBS, 600 LBS, 1500 LBS
UNI / EN	16Bar 6Bar 40Bar 10Bar 25Bar
DIN Pressure Calculation	25Bar 40Bar 16Bar 6Bar 10Bar / PN64 PN10 PN25 PN16 PN6 PN40
JIS	16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K
Manufacturer of Connect Type/ Flanges Face Type	RF, RTJ, FF, LJF, Small Tongue, Large Tongue & Groove
Coating	Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized
Common Types By Manufacturer	Threaded / Screwed / Forged / Plate
Origin	West Europe / Japan / Indian / USA / Korean
Manufacturer of	ANSI DIN, GOST, JIS, UNI, BS, AS2129, SABS, NFE, AWWA, EN etc.
Standards Provided By Manufacturer	API7S-43, API605, B16.48, ISO70051, MSS S44, ANSI/ASME B16.5, B16.47 Series A & B, BS4504, BS 10, EN-1092, DIN, API7S-15, JISB2220, BS1560-3.1, ASME/ANSI B16.5/16.36/16.47A/16.47B, EN1092
Test	Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine
Equipment	Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc
Production technique Used By Manufacturer	Heat treated, Forged and machined

Well know Copper Nickel Weld Neck Flange distributor, importer, stockists, wholesalers, stockholders, dealers, supplier, exporters and Manufacturer in Mumbai.

Copper Nickel Flange Weight

Size (in)	Number of Bolt Holes	Flange Diameter (in)	Bolt Circle Diameter (in)	Flange Thickness (in)	Bolt Hole Diameter (in)	Approx Weight (lbs)	Bore
1/2	4	3.5	2.38	0.44	0.63	1.2	Sch 40 (Std)
3/4	4	3.88	2.75	0.5	0.63	1.7	Sch 40 (Std)
1	4	4.25	3.13	0.56	0.63	2.2	Sch 40 (Std)
1-1/4	4	4.63	3.5	0.63	0.63	2.9	Sch 40 (Std)
1-1/2	4	5	3.88	0.69	0.63	3.7	Sch 40 (Std)
2	4	6	4.75	0.75	0.75	5.7	Sch 40 (Std)
2-1/2	4	7	5.5	0.88	0.75	9	Sch 40 (Std)
3	4	7.5	6	0.94	0.75	10.5	Sch 40 (Std)
3-1/2	8	8.5	7	0.94	0.75	13	Sch 40 (Std)
4	8	9	7.5	0.94	0.75	14.2	Sch 40 (Std)
5	8	10	8.5	0.94	0.88	16	Sch 40 (Std)
6	8	11	9.5	1	0.88	19.4	Sch 40 (Std)
8	8	13.5	11.75	1.13	0.88	31.3	Sch 40 (Std)
10	12	16	14.25	1.19	1	42.3	Sch 40 (Std)
12	12	19	17	12.88	1	69.6	Sch 40 (Std)

Pressure Rating of Copper Nickel Pipe Flanges

Temperature °F	Class 150	Class 600	Class 1500	Class 400	Class 900	Class 300	Class 2500
-20 to 100	275	1440	3600	960	2160	720	6000
300	205	1080	2700	720	1620	540	4500
200	230	1200	3000	800	1800	600	5000
400	190	995	2485	660	1490	495	4140
600	140	875	2185	580	1310	435	3640
650	125	860	2150	575	1290	430	3580
500	170	930	2330	620	1395	465	3880
700	110	850	2125	565	1275	425	3540
750	95	830	2075	555	1245	415	3460
850	65	790	1980	530	1190	395	3300
800	80	805	2015	540	1210	405	3360
900	50	780	1945	520	1165	390	3240
950	35	765	1910	510	1145	380	3180
1000	20	640	1605	430	965	320	2675
1100	20	515	1285	345	770	255	2145
1150	20	400	995	265	595	200	1655
1050	20	615	1545	410	925	310	2570
1200	20	310	770	205	465	155	1285
1250	20	225	565	150	340	115	945
1300	20	170	430	115	255	85	715
1400	20	95	240	65	145	50	400
1350	20	125	310	80	185	60	515
1450	15	70	170	45	105	35	285
1500	10	55	135	35	80	25	230

90/10 Copper Nickel Flanges are available in class 150 to 2500, view 7060x Composite and Cuni 90/10 Threaded Flange dimensions

Copper Nickel Flange Dimensions

Size in Inch	RF Dia.	Size in mm	Machine Bolt Length	Flange Thickness	ISO Stud Size	PCD	No of Bolts	Bolt Size UNC	Outer Dia.	RF Height	RF Stud Length	Hole Size	Weight in kg
	C			B		E			A	D
1/2	34.9	15	50	9.6	M14	60.3	4	1/2	90	2	55	5/8	0.9
1	50.8	25	55	12.7	M14	79.4	4	1/2	110	2	65	5/8	0.9
1 1/4	63.5	32	55	14.3	M14	88.9	4	1/2	115	2	70	5/8	1.4
3/4	42.9	20	50	11.2	M14	69.9	4	1/2	100	2	65	5/8	0.9
1 1/2	73	40	65	15.9	M14	98.4	4	1/2	125	2	70	5/8	1.8
2	92.1	50	70	17.5	M16	120.7	4	5/8	150	2	85	3/4	2.3
3	127	80	75	22.3	M16	152.4	4	5/8	190	2	90	3/4	4.1
3 1/2	139.7	90	75	22.3	M16	177.8	8	5/8	215	2	90	3/4	5.9
4	157.2	100	75	22.3	M16	190.5	8	5/8	230	2	90	3/4	7.7
5	185.7	125	85	22.3	M20	215.9	8	3/4	255	2	95	7/8	9.1
2 1/2	104.8	65	75	20.7	M16	139.7	4	5/8	180	2	90	3/4	3.2
6	215.9	150	85	23.9	M20	241.3	8	3/4	280	2	100	7/8	11.8
8	269.9	200	90	27	M20	298.5	8	3/4	345	2	110	7/8	20.5
10	323.8	250	100	28.6	M24	362	12	7/8	405	2	115	1	32
12	381	300	100	30.2	M24	431.8	12	7/8	485	2	120	1	50
14	412.8	350	115	33.4	M27	476.3	12	1	535	2	135	1 1/8	64
16	469.9	400	115	35	M27	539.8	16	1	595	2	135	1 1/8	82
18	533.4	450	125	38.1	M30	577.9	16	1 1/8	635	2	145	1 1/4	100
20	584.2	500	140	41.3	M30	635	20	1 1/8	700	2	160	1 1/4	130
24	692.2	600	150	46.1	M33	749.3	20	1 1/4	815	2	170	1 3/8	196

Standard Table of Cupro Nickel Flanges

COPPER NICKEL FLANGES	MATERIAL	DIN	EEMUA	ANSI
COMPOSITE WELD NECK INNER FLANGES	CuNi	DIN 86037	145
SOLID SOCKET WELDING	CuNi			B 16-5
COMPOSITE WELD NECK BACKING FLANGES	Carbon steel	DIN 86037	145
SOLID WELD NECK	CuNi	DIN 2632/2633	145	B 16-5
SOLID SLIP ON	CuNi	DIN 86033	145	B 16-5
COMPOSITE SLIP ON BACKING FLANGES	Carbon steel	DIN 86036	145
SOLID BLIND	CuNi			B 16-5
COMPOSITE SLIP ON INNER FLANGES	CuNi	DIN 86036	145
THREADED WELDING	CuNi			B 16-5

DIN Standard Cu Ni Flanges

• DIN 86037 Composite WNRF Flanges
• DIN 86033 Copper Nickel SORF Flanges
• DIN 86036 Composite SORF Flanges
• DIN 2632/2633 Copper Nickel Weld Neck Flanges

EEMUA 145 Standard Copper Nickel 70/30 Flanges

EEMUA 145 Standard copper-nickel flanges are commonly used on maritime and offshore structures.

Material: it can be named as UNS 7060X

Copper Nickel Flanges Price List

Copper Nickel Pipe Flanges Price Per Piece in India	Price Applicable for jan 2022 to june 2022	Price Applicable for July 2022 to December 2022
DN100 X DIN86037 CUNI COMPOSITE W.N. FLANGE Per Kg	US $22.69	US $24.69
COPPER-NICKEL 90/10 SOLID W/N FLANGE FF ASME B16.5 UNS C70600 4 X WT 3.0mm Per Piece	US $215.46	US $217.46
COPPER-NICKEL 90/10 BLIND FLANGE RF ASME B16.5 Per Kg	US $11.57	US $14.57
COPPER NICKEL FLANGES WN INNER 108,0X2,5 Per Kg	US $22.79	US $23.79
90/10 COPPER NICKEL WELD NECK INNER FLANGES 1 1/2 Per Kg	US $40.36	US $42.36

Are you looking for Copper Nickel Flange manufacturer in India, Contact us to get latest price list of Cu Ni Flanges. We are leading Copper Nickel Flange supplier and exporter in various countries.

DIN 86037 Flange Dimensions

Outside diameter of pipe		DIN86037
		PN10
ØD						Drilling			Theo.
		ØA	C	ØB	F	ØG	N	Ød	weight
nominal	actual	mm	mm	mm	mm	mm	mm	mm	Kg/piece
inch	mm
0.5	16	–	–	–	–	–	–	–	–
0.75	25	105	14	28	3	75	4	14	0.8
1	30	115	16	33	4	85	4	14	1.1
1.25	38	140	16	42	4	100	4	18	1.65
1.5	44.5	150	16	50	4	110	4	18	1.85
2	57	165	16	62	5	125	4	18	2.2
2.5	76.1	185	16	81	5	145	4	18	2.65
3	88.9	200	18	94	5	160	8	18	3.3
4	108	220	18	113	5	180	8	18	3.65
5	133	250	18	138	5	210	8	18	4.55
6	159	285	18	164	5	240	8	22	5.6
7	193.7	315	22	200	5	270	8	22	7.5
8	219.1	340	20	225	5	295	8	22	7.45
10	267	395	22	273	5	350	12	22	10.3
12	323.9	445	24	331	7	400	12	22	12
14	368	505	24	375	7	460	16	22	16
16	419.1	565	26	426	7	515	16	26	20
18	457.2	615	28	465	7	565	20	26	25
20	508	670	30	517	7	620	20	26	31
24	610	780	32	618	9	725	20	30	40

A wide selection of Cuni Flange in all standard sizes, faces and pressure ratings, ready stock of Copper Nickel 90/10 Socket Weld, Orifice and in Composite Flange in UAE and India

Dimension Table of Copper Nickel Slip On Flange

Size in Inch	Size in mm	No of Bolts	Outer Dia.	Hub OD	ISO Stud Size	Flange Length	RF Height	Flange Thick.	RF Dia.	PCD	Hole Size	Socket Bore	Weight in kg
			A	C		D	F	B	E	G		H
1/2	15	4	90	30	M14	14	2	9.6	34.9	60.3	5/8	22.2	0.8
1	25	4	110	49	M14	16	2	12.7	50.8	79.4	5/8	34.5	0.9
3/4	20	4	100	38	M14	14	2	11.2	42.9	69.9	5/8	27.7	0.9
1 1/4	32	4	115	59	M14	19	2	14.3	63.5	88.9	5/8	43.2	1.4
2	50	4	150	78	M16	24	2	17.5	92.1	120.7	3/4	61.9	2.3
1 1/2	40	4	125	65	M14	21	2	15.9	73	98.4	5/8	49.5	1.4
2 1/2	65	4	180	90	M16	27	2	20.7	104.8	139.7	3/4	74.6	3.2
3	80	4	190	108	M16	29	2	22.3	127	152.4	3/4	90.7	3.7
4	100	8	230	135	M16	32	2	22.3	157.2	190.5	3/4	116.1	5.9
3 1/2	90	8	215	122	M16	30	2	22.3	139.7	177.8	3/4	103.4	5
5	125	8	255	164	M20	35	2	22.3	185.7	215.9	7/8	143.8	6.8
8	200	8	345	246	M20	43	2	27	269.9	298.5	7/8	221.5	13.7
10	250	12	405	305	M24	48	2	28.6	323.8	362	1	276.2	19.5
6	150	8	280	192	M20	38	2	23.9	215.9	241.3	7/8	170.7	8.6
12	300	12	485	365	M24	54	2	30.2	381	431.8	1	327	29
24	600	20	815	663	M33	81	2	46.1	692.2	749.3	1 3/8	616	100
16	400	16	595	457	M27	62	2	35	469.9	539.8	1 1/8	410.5	54
18	450	16	635	505	M30	67	2	38.1	533.4	577.9	1 1/4	461.8	59
14	350	12	535	400	M27	56	2	33.4	412.8	476.3	1 1/8	359.2	41
20	500	20	700	559	M30	71	2	41.3	584.2	635	1 1/4	513.1	75

Copper Nickel Blind Flange Dimensions

Nominal Pipe Size	OD of Flange (D)	Dia of Bolt Circle (K)	No of Bolt Holes	Dia of Bolt Holes (L)	Thickness of Flange (B)	Dia of Bolt (inches)	Dia of Raised Face (G)	Approx Weight (kg)
1/2	88.9	60.5	4	15.7	11.2	1/2	35.1	0.5
3/4	98.6	69.9	4	15.7	12.7	1/2	42.9	1
1	108	79.2	4	15.7	14.2	1/2	50.8	1
1-1/4	117.3	88.9	4	15.7	15.7	1/2	63.5	1
1-1/2	127	98.6	4	15.7	17.5	1/2	73.2	2
2	152.4	120.7	4	19.1	19.1	5/8	91.9	2
2-1/2	177.8	139.7	4	19.1	22.4	5/8	104.6	3
3	190.5	152.4	4	19.1	23.9	5/8	127	4
3-1/2	215.9	177.8	8	19.1	23.9	5/8	139.7	6
4	228.6	190.5	8	19.1	23.9	5/8	157.2	8
5	254	215.9	8	22.4	23.9	3/4	185.7	9
6	279.4	241.3	8	22.4	25.4	3/4	215.9	12
8	342.9	298.5	8	22.4	28.4	3/4	269.7	20
10	406.4	362	12	25.4	30.2	7/8	323.9	32
12	482.6	431.8	12	25.4	31.8	7/8	381	50
14	533.4	476.3	12	28.4	35.1	1	412.8	64
16	596.9	539.8	16	28.4	36.6	1	469.9	82
18	635	577.9	16	31.8	39.6	1-1/8	533.4	100
20	698.5	635	20	31.8	42.9	1-1/8	584.2	129
24	812.8	749.3	20	35.1	47.8	1-1/4	692.2	195

Copper Nickel Threaded Flange Dimension Chart

Pipe Size (NPS)	Thickness of Flange C	Diameter of Raised Face B	Minimum Thread Length N	Diameter of Hub at Base J	Length of Hub L	Number of Bolt Holes	Outside Diameter of Flange A	Approx. Weight (Lbs.)
1/2	7/16	1 3/8	5/8	1 3/16	5/8	4	3 1/2	2
3/4	1/2	1 11/16	5/8	1 1/2	5/8	4	3 7/8	2
1	9/16	2	11/16	1 15/16	11/16	4	4 1/4	2
1 1/4	5/8	2 1/2	13/16	2 5/16	13/16	4	4 5/8	3
1 1/2	11/16	2 7/8	7/8	2 9/16	7/8	4	5	3
2	3/4	3 5/8	1	3 7/16	1	4	6	5
2 1/2	7/8	4 1/8	1 1/8	3 9/16	1 1/8	4	7	7
3	15/16	5	1 3/16	4 1/4	1 3/16	4	7 1/2	8
3 1/2	15/16	5 1/2	1 1/4	4 13/16	1 1/4	8	8 1/2	11
4	15/16	6 3/16	1 5/16	5 5/16	1 5/16	8	9	13
5	15/16	7 5/16	1 7/16	6 7/16	1 7/16	8	10	15
6	1	8 1/2	1 9/16	7 9/16	1 9/16	8	11	19
8	1 1/8	10 5/8	1 3/4	9 11/16	1 3/4	8	13 1/2	30
10	1 3/16	12 3/4	1 15/16	12	1 15/16	12	16	43
12	1 1/4	15	2 3/16	14 3/8	2 3/16	12	19	64
14	1 3/8	16 1/4	2 1/4	15 3/4	2 1/4	12	21	85
16	1 7/16	18 1/2	2 1/2	18	2 1/2	16	23 1/2	93
18	1 9/16	21	2 11/16	19 7/8	2 11/16	16	25	120
20	1 11/16	23	2 7/8	22	2 7/8	20	27 1/2	155
22	1 13/16	25 1/4	3 1/8	24	3 1/8	20	29 1/2	159
24	1 7/8	27 1/4	3 1/4	26 1/8	3 1/4	20	32	210

Dimension table of Class 150 70/30 Copper Nickel Flanges

Nominal Pipe Size (in)	Class 150
	Diameter of Flange (in)	No. of Bolts	Dia of Bolts (in)	Dia of Bolt Holes (in)	Bolt Circle (in)
1/4	3-3/8	4	1/2	0.62	2-1/4
1/2	3-1/2	4	1/2	0.62	2-3/8
3/4	3-7/8	4	1/2	0.62	2-3/4
1	4-1/4	4	1/2	0.62	3-1/8
1-1/4	4-5/8	4	1/2	0.62	3-1/2
1-1/2	5	4	1/2	0.62	3-7/8
2	6	4	5/8	0.75	4-3/4
2-1/2	7	4	5/8	0.75	5-1/2
3	7-1/2	4	5/8	0.75	6
3-1/2	8-1/2	8	5/8	0.75	7
4	9	8	5/8	0.75	7-1/2
5	10	8	3/4	0.88	8-1/2
6	11	8	3/4	0.88	9-1/2
8	13-1/2	8	3/4	0.88	11-3/4
10	16	12	7/8	1	14-1/4
12	19	12	7/8	1	17
14	21	12	1	1.12	18-3/4
16	23-1/2	16	1	1.12	21-1/4
18	25	16	1-1/8	1.25	22-3/4
20	27-1/2	20	1-1/8	1.25	25
24	32	20	1-1/4	1.38	29-1/2

CL 300 Copper Nickel Composite Flanges Dimension

Nominal Pipe Size (inches)	Class 300
	Dia of Flanges (inches)	No. of Bolts	Dia of Bolts (inches)	Dia of Bolt Holes (inches)	Bolt Circle (inches)
1/4	3-3/8	4	1/2	0.62	2-1/4
1/2	3-3/4	4	1/2	0.62	2-5/8
3/4	4-5/8	4	5/8	0.75	3-1/4
1	4-7/8	4	5/8	0.75	3-1/2
1-1/4	5-1/4	4	5/8	0.75	3-7/8
1-1/2	6-1/8	4	3/4	0.88	4-1/2
2	6-1/2	8	5/8	0.75	5
2-1/2	7-1/2	8	3/4	0.88	5-7/8
3	8-1/4	8	3/4	0.88	6-5/8
3-1/2	9	8	3/4	0.88	7-1/4
4	10	8	3/4	0.88	7-7/8
5	11	8	3/4	0.88	9-1/4
6	12-1/2	12	3/4	0.88	10-5/8
8	15	12	7/8	1	13
10	17-1/2	16	1	1.12	15-1/4
12	20-1/2	16	1-1/8	1.25	17-3/4
14	23	20	1-1/8	1.25	20-1/4
16	25-1/2	20	1-1/4	1.38	22-1/2
18	28	24	1-1/4	1.38	24-3/4
20	30-1/2	24	1-1/4	1.38	27
24	36	24	1-1/2	1.62	32

400 LBS Cupro Nickel 70-30 Flanges Dimension Table

Nominal Pipe Size (inches)	Class 400
	Dia of Flange (inches)	No. of Bolts	Dia of Bolts (inches)	Dia of Bolt Holes (inches)	Bolt Circle (inches)
1/4	3-3/8	4	1/2	0.62	2-1/4
1/2	3-3/4	4	1/2	0.62	2-5/8
3/4	4-5/8	4	5/8	0.75	3-1/4
1	4-7/8	4	5/8	0.75	3-1/2
1-1/4	5-1/4	4	5/8	0.75	3-7/8
1-1/2	6-1/8	4	3/4	0.88	4-1/2
2	6-1/2	8	5/8	0.75	5
2-1/2	7-1/2	8	3/4	0.88	5-7/8
3	8-1/4	8	3/4	0.88	6-5/8
3-1/2	9	8	7/8	1	7-1/4
4	10	8	7/8	1	7-7/8
5	11	8	7/8	1	9-1/4
6	12-1/2	12	7/8	1	10-5/8
8	15	12	1	1.12	13
10	17-1/2	16	1-1/8	1.25	15-1/4
12	20-1/2	16	1-1/4	1.38	17-3/4
14	23	20	1-1/4	1.38	20-1/4
16	25-1/2	20	1-3/8	1.5	22-1/2
18	28	24	1-3/8	1.5	24-3/4
20	30-1/2	24	1-1/2	1.62	27
24	36	24	1-3/4	1.88	32

Dimension Chart of 600# Cupro Nickel 90/10 Flanges

Nominal Pipe Size NPS (in)	Class 600
	Dia of Flange (in)	No. of Bolts	Dia of Bolts (in)	Dia of Bolt Holes (in)	Bolt Circle (in)
1/4	3-3/8	4	1/2	0.62	2-1/4
1/2	3-3/4	4	1/2	0.62	2-5/8
3/4	4-5/8	4	5/8	0.75	3-1/4
1	4-7/8	4	5/8	0.75	3-1/2
1-1/4	5-1/4	4	5/8	0.75	3-7/8
1-1/2	6-1/8	4	3/4	0.88	4-1/2
2	6-1/2	8	5/8	0.75	5
2-1/2	7-1/2	8	3/4	0.88	5-7/8
3	8-1/4	8	3/4	0.88	6-5/8
3-1/2	9	8	7/8	1	7-1/4
4	10-3/4	8	7/8	1	8-1/2
5	13	8	1	1.12	10-1/2
6	14	12	1	1.12	11-1/2
8	16-1/2	12	1-1/8	1.25	13-3/4
10	20	16	1-1/4	1.38	17
12	22	20	1-1/4	1.38	19-1/4
14	23-3/4	20	1-3/8	1.5	20-3/4
16	27	20	1-1/2	1.62	23-3/4
18	29-1/4	20	1-5/8	1.75	25-3/4
20	32	24	1-5/8	1.75	28-1/2
24	37	24	1-7/8	2	33

Class 900 UNS C70600 Flange Dimension

Nominal Pipe Size NPS (in)	Class 900
	Dia of Flange (in)	No. of Bolts	Dia of Bolts (in)	Dia of Bolt Holes (in)	Bolt Circle (in)
1/2	4-3/4	4	3/4	0.88	3-1/4
3/4	5-1/8	4	3/4	0.88	3-1/2
1	5-7/8	4	7/8	1	4
1-1/4	6-1/4	4	7/8	1	4-3/8
1-1/2	7	4	1	1.12	4-7/8
2	8-1/2	8	7/8	1	6-1/2
2-1/2	9-5/8	8	1	1.12	7-1/2
3	9-1/2	8	7/8	1	7-1/2
4	11-1/2	8	1-1/8	1.25	9-1/4
5	13-3/4	8	1-1/4	1.38	11
6	15	12	1-1/8	1.25	12-1/2
8	18-1/2	12	1-3/8	1.5	15-1/2
10	21-1/2	16	1-3/8	1.5	18-1/2
12	24	20	1-3/8	1.5	21
14	25-1/4	20	1-1/2	1.62	22
16	27-3/4	20	1-5/8	1.75	24-1/2
18	31	20	1-7/8	2	27
20	33-3/4	20	2	2.12	29-1/2
24	41	20	2-1/2	2.62	35-1/2

Dimension Table of 1500 LBS UNS C71500 Flange

Nominal Pipe Size (in)	Class 1500
	Dia of Flange (in)	No. of Bolts	Dia of Bolts (in)	Dia of Bolt Holes (in)	Bolt Circle (in)
1/2	4-3/4	4	3/4	0.88	3-1/4
3/4	5-1/8	4	3/4	0.88	3-1/2
1	5-7/8	4	7/8	1	4
1-1/4	6-1/4	4	7/8	1	4-3/8
1-1/2	7	4	1	1.12	4-7/8
2	8-1/2	8	7/8	1	6-1/2
2-1/2	9-5/8	8	1	1.12	7-1/2
3	10-1/2	8	1-1/8	1.25	8
4	12-1/4	8	1-1/4	1.38	9-1/2
5	14-3/4	8	1-1/2	1.62	11-1/2
6	15-1/2	12	1-3/8	1.5	12-1/2
8	19	12	1-5/8	1.75	15-1/2
10	23	12	1-7/8	2	19
12	26-1/2	16	2	2.12	22-1/2
14	29-1/2	16	2-1/4	2.38	25
16	32-1/2	16	2-1/2	2.62	27-3/4
18	36	16	2-3/4	2.88	30-1/2
20	38-3/4	16	3	3.12	32-3/4
24	46	16	3-1/2	3.62	39

CL 2500 70/30 Copper Nickel Flanges Dimension

Nominal Pipe Size (in)	Class 2500
	Dia of Flange (in)	No. of Bolts	Dia of Bolts (in)	Dia of Bolt Holes (in)	Bolt Circle (in)
1/2	5-1/4	4	3/4	0.88	3-1/2
3/4	5-1/2	4	3/4	0.88	3-3/4
1	6-1/4	4	7/8	1	4-1/4
1-1/4	7-1/4	4	1	1.12	5-1/8
1-1/2	8	4	1-1/8	1.25	5-3/4
2	9-1/4	8	1	1.12	6-3/4
2-1/2	10-1/2	8	1-1/8	1.25	7-3/4
3	12	8	1-1/4	1.38	9
4	14	8	1-1/2	1.62	10-3/4
5	16-1/2	8	1-3/4	1.88	12-3/4
6	19	8	2	2.12	14-1/2
8	21-3/4	12	2	2.12	17-1/4
10	26-1/2	12	2-1/2	2.62	21-1/4
12	30	12	2-3/4	2.88	24-3/8

Buy directly from Copper Nickel Flange manufacturer and save cost, we produce C70600 Flange in Forged and Plate as per customer drawing

Types of Copper Nickel Flanges

2500 LBS Copper Nickel 90/10 Girth Flanges

70/30 Copper Nickel Orifice Flanges

Copper Nickel Backing Rings

ASME B16.5 Cuni 70/30 Nipoflange Flanges

300 LBS Cupro nickel 70/30 Lapped Joint Flange

Cu-Ni 70/30 Spectacle Blind Flange

C71500 Flange

70/30 Copper Nickel Flanges

ASTM A151 Cuni C70600 BLRF Flanges

Cupro Nickel 90/10 Flanges

Cupro Nickel Flanges

Cupro Nickel 90/10 Slip On Flange

DIN 86037 Flange

C70600 Flange

Cupro Nickel 70/30 Flanges

90/10 Cu-Ni Ring Joint Flange

5000 NB DIN 2.0882 SORF Flanges

Cu-Ni 70/30 Reducing Flanges

70/30 Cu-Ni Socket Weld Flange

150 LBS 90/10 Cupro Nickel Screwed Flange

15 NB cu ni 70/30 Expander Flanges

Copper Nickel 70/30 Flanges

EEMUA 234 Flange

Cuni Flange

1500 LBS Cu-Ni 90/10 Long Weld Neck Flange

Collar DIN 86037

UNS C70600 Weld Neck Flanges

Copper nickel 70/30 Tongue & Groove Flange

Inner Flange DIN 86037

Copper Nickel Composite Flange

EEMUA 145 Flange

7060x Flange

900 LBS ASTM B171 UNS C70600 Threaded Flange

90/10 Copper Nickel SWRF Flanges

Copper Nickel Alloy 90/10 WNRF Flange

Copper nickel 90/10 Flanges

90/10 Copper Nickel Flanges

600 LBS 70/30 Cupro Nickel Blind Flange

Cupro Nickel Flange

Cupro Nickel Flanges Chemical Composition

Grade	Fe	Cu	Pb	Ni	Mn	Zn
Cu-Ni 70-30	0.4-1.0	65.0 min	.05 max	29-33	1 max	1 max
Cu-Ni 90-10	1.8 max	88.6 min	.05 max	9-11 max	1.0 max	1 max

Copper Nickel Composite Flange Mechanical Properties

Typical Values	Units	CuNi 70/30	CuNi 90/10
Proof Stress (YS 0,2), (Rp 0,2)	MPa	> 130	> 110
	ksi	> 19	> 16
Tensile Strength (UTS),(Rm)	MPa	> 350	> 310
	ksi	> 51	> 44
Hardness (HB10 D2 )		> 80	> 70
Elongation (E 5,65 VS)	%	> 30	> 35

Cuni Flange Physical Properties

Values	Units	CuNi 70/30	CuNi 90/10
Density (20°C)	kg/m3	8900	8900
Magnetic Permeability (20°C annealed)		< 1.05	1.08 – 1.80
Thermal Conductivity (20°C to 200°C)	W/m.°K	30	50
Modulus of Elasticity (20°C annealed)	Mpa	126 000	126 000
Electrical Resistivity (20°C annealed)	μΩ.cm	34	19
Annealing Temperature	°C	760 820	760 – 800
Coefficient of Expansion (20°C to 200°C)	C x 10-6	16	17
Melting Interval	°C	1180 1240	1100 – 1150

Cupro Nickel Flanges Equivalent

STANDARD	WERKSTOFF NR.	UNS
Cupro Nickel 90/10	2.0872	C70600
Cupro Nickel 70/30	2.0882	C71500

Working Temperature of Cupro nickel 70/30 Flanges?

Working Temperature

up to 300 Degree C

How can you Test the Quality of ASTM B171 UNS C70600 Flanges?

• Magnetic particle inspection test
• Tensile test
• Proof test
• Visual test
• Ultrasonic testing
• Flattening Test
• PMI Testing
• Flaring Test

How can you Measure Cuni Flanges?

Measuring Process Includes:

• Using a level surface to place the cupronickel flange.
• Choosing two bolt holes on the cupronickel flange that are opposite one other.
• Measure the distance between the centers of one bolt hole and the center of the other bolt hole on your cupronickel flange with a tape measure.

Can you Weld 90/10 Cu-Ni Flanges?

Welding copper-nickel alloys flanges is simple. Welders of simple metallic structures do not need to pre-heat surfaces or apply any post-welding treatments because of the alloys. The sole criterion is that all surfaces that will be welded are free of impurities.

Difference Between Cupronickel Slip-on VS Lap Joint Flanges

They're very similar to one other, and they're common in applications that necessitate frequent disassembly for inspection. A lap joint copper nickel flange, on the other hand, is designed with a curved radius on the bore and face to accommodate the stub end of a lap joint.

What is Pitch Circle Diameter (PCD) on 70/30 Copper Nickel Flanges?

The diameter of a circle that passes through each of the bolt holes is known as PCD (Pitch Circle Diameter). The Pitch Circle Diameter (PCD), which can indicate if the flange bolt holes will match, is one of the most significant metrics. From one side of the interior opening to the other, take a measurement across the center.

How to Buy 90/10 Cu-Ni Flanges?

• Copper Nickel Flange Type : Flanges are used for a variety of purposes, including connecting piping systems, redirecting, and dividing fluid flow.
• Standard Specifications : should adhere to the appropriate quality performance standards
• Material Grades : Copper Nickel 90-10 and Cuni 70-30 are two common material grades.
• Size of the Flange: For a secure connection, the size of your cupronickel flange should match the size of your piping system.
• Pressure and Temperature Rating : should be able to handle the pipe system's pressure and temperature

Standard Specifications of Copper nickel 90/10 Flanges

• ASME/ANSI B16.9
• DIN Standard
• EEMUA 146/EEMUA 234

Applications of Cupro nickel 70/30 Flanges

• Shipbuilding
• Power generation plants
• Desalination plants
• Offshore mining
• Food processing plants

Benefits of Copper Nickel 70/30 Flanges

• Dimensionally stable
• Impermeable
• Erosion resistant
• Durable and long-lasting
• Resistant to marine organisms
• Easy to modify and fix
• Excellent mechanical properties

Classification of Copper Nickel Flange Forging

Open-die Drop Forging

Impression-die Forging

Loose Tooling Forging

Manufacturing Process Of Copper Nickel Forged Flanges

Difference between ANSI and DIN Copper Nickel Flanges?

ANSI is a US standard, while DIN is a European Union standard. ANSI or DIN certified flanges are available depending on the location.

Dimensions are measured in inches and pressure is measured in pounds per square inch (psi) according to ANSI standards. Dimensions for DIN, on the other hand, are measured in metric units with pressure in bars.