Copper Nickel Flange manufacturer in India

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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

Copper Nickel Flanges

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

Table of Content


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.

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)
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

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
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 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 flanges are commonly used on maritime and offshore structures.

Material: it can be named as UNS 7060X

Copper Nickel Pipe Flanges Price Per Piece in India Cupro Nickel Flanges Price in INR Cuni Flange Price in UAE Dirham Copper Nickel Flange Price in USD
DN100 X DIN86037 CUNI COMPOSITE W.N. FLANGE Per Kg 1711 UAE Dirham 83.34 $22.69
COPPER-NICKEL 90/10 SOLID W/N FLANGE FF ASME B16.5 UNS C70600 4 X WT 3.0mm Per Piece 16,251 UAE Dirham 791.41 $215.46
COPPER-NICKEL 90/10 BLIND FLANGE RF ASME B16.5 Per Kg 873 UAE Dirham 42.51 $11.57
COPPER NICKEL FLANGES WN INNER 108,0X2,5 Per Kg 1,719 UAE Dirham 83.71 $22.79
90/10 COPPER NICKEL WELD NECK INNER FLANGES 1 1/2 Per Kg 3,044 UAE Dirham 148.24 $40.36

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

Copper Nickel Slip On Flange Dimensions

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 Dimensions

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
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
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
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
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
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
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
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
2500 LBS Copper Nickel 90/10 Girth Flanges

2500 LBS Copper Nickel 90/10 Girth Flanges

70/30 Copper Nickel Orifice Flanges

70/30 Copper Nickel Orifice Flanges

Copper Nickel Backing Rings

Copper Nickel Backing Rings

ASME B16.5 Cuni 70/30 Nipoflange Flanges

ASME B16.5 Cuni 70/30 Nipoflange Flanges

300 LBS Cupro nickel 70/30 Lapped Joint Flange

300 LBS Cupro nickel 70/30 Lapped Joint Flange

Cu-Ni 70/30 Spectacle Blind Flange

Cu-Ni 70/30 Spectacle Blind Flange

C71500 Flange

C71500 Flange

70/30 Copper Nickel Flanges

70/30 Copper Nickel Flanges

ASTM A151 Cuni C70600 BLRF Flanges

ASTM A151 Cuni C70600 BLRF Flanges

Cupro Nickel 90/10 Flanges

Cupro Nickel 90/10 Flanges

Cupro Nickel Flanges

Cupro Nickel Flanges

Cupro Nickel 90/10 Slip On Flange

Cupro Nickel 90/10 Slip On Flange

DIN 86037 Flange

DIN 86037 Flange

C70600 Flange

C70600 Flange

Cupro Nickel 70/30 Flanges

Cupro Nickel 70/30 Flanges

90/10 Cu-Ni Ring Joint Flange

90/10 Cu-Ni Ring Joint Flange

5000 NB DIN 2.0882 SORF Flanges

5000 NB DIN 2.0882 SORF Flanges

Cu-Ni 70/30 Reducing Flanges

Cu-Ni 70/30 Reducing Flanges

70/30 Cu-Ni Socket Weld Flange

70/30 Cu-Ni Socket Weld Flange

150 LBS 90/10 Cupro Nickel Screwed Flange

150 LBS 90/10 Cupro Nickel Screwed Flange

15 NB cu ni 70/30 Expander Flanges

15 NB cu ni 70/30 Expander Flanges

Copper Nickel 70/30 Flanges

Copper Nickel 70/30 Flanges

EEMUA 234 Flange

EEMUA 234 Flange

Cuni Flange

Cuni Flange

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

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

Collar DIN 86037

Collar DIN 86037

UNS C70600 Weld Neck Flanges

UNS C70600 Weld Neck Flanges

Copper nickel 70/30 Tongue & Groove Flange

Copper nickel 70/30 Tongue & Groove Flange

Inner Flange DIN 86037

Inner Flange DIN 86037

Copper Nickel Composite Flange

Copper Nickel Composite Flange

EEMUA 145 Flange

EEMUA 145 Flange

7060x Flange

7060x Flange

900 LBS ASTM B171 UNS C70600 Threaded Flange

900 LBS ASTM B171 UNS C70600 Threaded Flange

90/10 Copper Nickel SWRF Flanges

90/10 Copper Nickel SWRF Flanges

Copper Nickel Alloy 90/10 WNRF Flange

Copper Nickel Alloy 90/10 WNRF Flange

Copper nickel 90/10 Flanges

Copper nickel 90/10 Flanges

90/10 Copper Nickel Flanges

90/10 Copper Nickel Flanges

600 LBS 70/30 Cupro Nickel Blind Flange

600 LBS 70/30 Cupro Nickel Blind Flange

Cupro Nickel Flange

Cupro Nickel Flange

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
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
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
STANDARD WERKSTOFF NR. UNS
Cupro Nickel 90/10 2.0872 C70600
Cupro Nickel 70/30 2.0882 C71500
Working Temperature up to 300 Degree C
  • Magnetic particle inspection test
  • Tensile test
  • Proof test
  • Visual test
  • Ultrasonic testing
  • Flattening Test
  • PMI Testing
  • Flaring Test

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.

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.

Cupronickel Slip-on VS Lap Joint Flange

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.

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.

  • 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
  • ASME/ANSI B16.9
  • DIN Standard
  • EEMUA 146/EEMUA 234
  • Shipbuilding
  • Power generation plants
  • Desalination plants
  • Offshore mining
  • Food processing plants
  • Dimensionally stable
  • Impermeable
  • Erosion resistant
  • Durable and long-lasting
  • Resistant to marine organisms
  • Easy to modify and fix
  • Excellent mechanical properties
Open-die Drop Forging

Open-die Drop Forging

Impression-die Forging

Impression-die Forging

Loose Tooling Forging

Loose Tooling Forging

Manufacturing Process Of Copper Nickel Forged 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.

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Copper Nickel Backing Rings

Poland, Dubai, Qatar, United States, Indonesia, South Africa,Jakarta, Bangladesh, Finland, Brazil, Bahrain, NY 12203 (USA), Argentina, Istanbul- Turkey, Hong Kong, Oman, Tehran -Iran, Kuala Lumpur, South Korea, Kuwait, Chile, Malaysia, South Africa, Kuwait, Chile, Malaysia, Germany, Norway, Europe, Belgium, Vietnam, Czechia, Nigeria, Singapore, Malaysia, France, Netherlands, Dubai- UAE, Iran, Jakarta -Indonesia, Romania, United States, Indonesia

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Inner Flange DIN 86037

Greece, Dammam -KSA, Singapore, Turkey, Philippines, Austria, Los Alamos -Mexico, Canada

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Cuni Weld Neck Flanges

Spain, United Kingdom (UK), Thailand, USA, Malaysia, Japan, Saudi Arabia (KSA)