Carbon Steel Flanges manufacturer in India

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Low Temperature Carbon Steel Blind Flange and CS Slip On Flange exporter in Mumbai

What Is Carbon Steel Flanges?
The carbon steel flanges are made up of carbon steel and their pressure ratings range between class 150 to 2500. The content of carbon in these flanges can go up to 2.1% by weight. There are elements too, present in the alloy and the variation in their quantities determine the properties of the flanges. For example, if the carbon content in the flanges increases, then after the heat treatment, it becomes stronger and harder.On the other hand, it also makes the flanges less ductile. However, increasing the carbon content without the heat treatment would reduce the weldability of the material.
The carbon steel flanges mostly consist of mild steel or low carbon steel. The inclusion of a small percentage of carbon enhances the strength and toughness of the flanges, but they are not readily tempered. This helps in reducing the overall cost of the material and as a result, these flanges are used in a wide range of applications.
These flanges are widely used for ambient and high temperature services in environments that involve high pressure. One of the best things about this material is that it is durable and available at low cost. Also, due to its high strength and toughness, these flanges are hard to break.
Manufacturers of carbon steel flanges can offer customization, in terms of, dimensions and coatings on the flanges. Depending on the environment where the flanges will be used, there are several types of coatings available like anti-rust painting, oil varnished, electric zinc coated and alloy material coated. Also, there are different types of carbon steel flanges available and each have their individual 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.
  • Socket weld flange- These are used in small and high pressure pipes.
  • Threaded flange- They are used in pipes with threaded ends.
  • Reducing flange- These help in connecting one pipe to the other.

Carbon Steel Slip On Flanges Vs Carbon Steel Weld Neck Flange
Being made of the same material, the Carbon Steel Slip On Flanges and the Carbon Steel Weld Neck Flange might possess similar chemical properties. But, due to the dissimilarity in their structure, they perform different operations in pipelines. They are mainly used in industries like chemical, nuclear power, petrochemicals, construction, shipbuilding industries, power plants, etc.
The Carbon Steel Slip On Flanges are mostly suitable for low pressure applications. They are easy to install and can be welded to different pipelines without much hassle. The welding process helps to reduce the cost of manufacturing the flanges. They do not require much longitudinal space to get mounted on for application.
Carbon Steel Weld Neck Flanges are used in applications that involve severe and critical conditions. The environments where these flanges are used mostly have high pressure and widely fluctuating temperatures and pressure. These are used for volatile and hazardous fluids, where the temperature is in the sub-zero range.

Forged Carbon Steel Flanges Vs Carbon Steel Lap Joint Flange
The Forged Carbon Steel Flanges come with higher precision and are capable of giving better performances. These are widely used across several industries, mainly for connecting equipment and pipelines. They can work in environments that involve high temperatures and pressures. The Forged Carbon Steel Flanges is a device that looks like a plate. They are usually circular in shape and hence can be attached to the ends of the pipes easily. They can also be attached to valves and other components for facilitating and assembling and disassembling of the entire piping system. They possess some of the best mechanical features which makes the whole connecting process better.
The Carbon Steel Lap Joint Flange is primarily used in places where frequent dismantling of the piping system is needed. These are mostly used in places where there is a space constraint. It consists of two components, a stab end with a lap-joint ring flange placed over it. These are mostly used in similar sizes and pressure classes like that of the weld neck flange.

Functions Of The Carbon Steel Threaded Flange
Carbon steel is a perfect mixture of various carbon components and iron. The higher the carbon content, the higher will be the strength and toughness of the flanges given it is heat treated properly. But the increased carbon reduces the ductility of the product, and it gets hard to weld too. Higher carbon reduces the melting point and also the temperature tolerance of the flange. The threaded flanges do have welding characteristics, but they are very simple and come with fast assembly. They should not be used in places where there is a large temperature difference. Also known as the screwed-on flange, these are especially used in places where welding cannot be done. Thus, one can mostly find the threaded flanges in low pressure applications that have smaller pipes.

Advantages Of Carbon Steel Socket Weld Flange
The Carbon Steel Socket Weld Flange comes with several advantages: it is resistant to corrosion, durable, safe and economical. The Carbon Steel Socket Weld Flange is used in place of the threaded flanges so as to reduce the risks of leakages. Also, this particular type of flange needs not be bevel for weld preparation. It is also to be noted that the weld material cannot penetrate through the bore of the pipe and also, the construction cost for the socket weld flanges are much less compared to the butt weld joint. It is because no special skills or equipment is required to execute this.
The carbon steel socket weld flanges can be customized by the manufacturers according to the requirements specified by the clients. They are great in leakage reductions and they are available in a high durable standard.

Carbon Steel Flanges Manufacturer In India

Carbon Steel Flanges manufacturer in India

Manufacturing Normalized Carbon Steel Weld Neck Flanges and CS Reducing flange according to EN 1092-2/ EN 1092-1, ASME B16.5, ANSI B16.47 Series A standards

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
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
UNI / EN 16Bar 6Bar 40Bar 10Bar 25Bar
Manufacturer of Connect Type/ Flange 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
Equipment Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc
Origin West Europe / Japan / Indian / USA / Korean
Manufacturer of ANSI DIN, GOST, JIS, UNI, BS, AS2129, SABS, NFE, AWWA, EN etc.
Test Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine
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
Production technique Used By Manufacturer Heat treated, Forged and machined

Well known Carbon Steel Flanges supplier, importer, stockists, distributor, dealers, exporters, wholesalers, stockholders and Manufacturer in Mumbai

Nominal Pipe Size
(inch)		 Dia. of
Flange
(inch)		 No.
of
Bolts		 Dia. of
Bolts
(inch)		 Dia. of
Bolt Holes
(inch)		 Bolt
Circle
(inch)
1/4 3-3/8 4 1/2 0.62 2-1/4
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
1/2 3-1/2 4 1/2 0.62 2-3/8
1-1/4 4-5/8 4 1/2 0.62 3-1/2
2 6 4 5/8 0.75 4-3/4
2-1/2 7 4 5/8 0.75 5-1/2
1-1/2 5 4 1/2 0.62 3-7/8
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
20 27-1/2 20 1-1/8 1.25 25
6 11 8 3/4 0.88 9-1/2
8 13-1/2 8 3/4 0.88 11-3/4
5 10 8 3/4 0.88 8-1/2
10 16 12 7/8 1 14-1/4
14 21 12 1 1.12 18-3/4
16 23-1/2 16 1 1.12 21-1/4
12 19 12 7/8 1 17
18 25 16 1-1/8 1.25 22-3/4
24 32 20 1-1/4 1.38 29-1/2
  • MSS S44
  • ISO70051
  • ASME B16.36
  • BS1560-3.1
  • API7S-15
  • ISO
  • UNI
  • EN-1092
  • ASME B16.5
Sizes in Inch Imperfections Max. Radial Projection
No deeper than the serrations bottom, mm Serrations Deeper Than the Serrations Bottom, mm
1/2 3.0 1.5
1 1/2 3.0 1.5
1 3.0 1.5
1 1/4 3.0 1.5
2 3.0 1.5
3/4 3.0 1.5
3 4.5 1.5
3 1/2 6.0 3.0
4 6.0 3.0
2 1/2 3.0 1.5
5 6.0 3.0
8 8.0 4.5
10 8.0 4.5
6 6.0 3.0
12 8.0 4.5
18 12.0 6.0
14 8.0 4.5
20 12.0 6.0
16 10.0 4.5
24 12.0 6.0

Low CS Forged Flanges and Killed Carbon Steel Plate Flanges manufacturer in Mumbai offer class 150/ 300 to 2500 Backing, Threaded, Companion and Stub End Flange at factory in Asia, check Carbon Steel Blind Flange price list and pressure rating chart

NPS (Nominal Pipe Size) NPT (Threaded) WRNR (Weld Neck) SWRF (Socket Weld) Loose (Lap Joint) SORF (Slip On) BLRF (Blind)
½ 1 2 2 1 1 2
¾ 2 2 2 2 2 2
1 2 3 2 2 2 2
1¼ 3 3 3 3 3 3
1½ 3 4 3 3 3 4
2 5 6 5 5 5 5
2½ 8 10 8 8 8 7
3 9 11.5 9 9 9 9
3½ 12 12 11 11 11 13
4 13 16.5 13 13 13 17
5 15 21 15 15 15 20
6 19 26 19 19 19 27
8 30 42 30 30 30 47
10 43 54 43 43 43 70
12 64 88 64 64 64 123
14 90 114 90 105 90 140
16 98 140 98 140 106 180
18 130 165 130 160 130 220
20 165 197 165 195 165 285
22 185 225 185 245 185 355
24 220 268 220 275 220 430
Low CS Flanges Price Per Piece in India Price Applicable for jan 2022 to june 2022 Price Applicable for July 2022 to December 2022
CARBON STEEL FLANGES CL150 WNRF SCH40 Per Kg US $0.57 US $2.57
CARBON STEEL (LWNRTJ) FLANGE 150 X 25.40 X 340 Per Kg $17.49 $19.49
WN SWIVEL 1500 8RTJ 12.7 WT CARBON STEEL FLANGES Per Piece $0.65 $2.65

This is an approximate Cost of Low CS Flanges in India. Feel free to contact us latest price list of Low Temp Carbon Steel Flanges in Mumbai. Compare our price with other killed carbon steel flanges manufacturer in India.

Elements Of Carbon Steel Flanges Composition, %
P [Phosphorus] ≤0.35
C [Carbon] ≤0.35
S [Sulfur] ≤0.40
Mn [Manganese] 0.60-1.05
Si [Silicon] 0.10-0.35
Ni [Nickel] ≤0.40
Cr [Chromium] ≤0.30
Cu [Copper] ≤0.40
Mo [Molybdenum] ≤0.12
V [Vanadium] ≤0.08
Minimum Tensile Strength Hardness Minimum Yield Strength Minimum Elongation Minimum Reduction of Area
MPa ksi HBW MPa ksi % %
485 70 137-187 250 36 22 30
Before you start searching CL150 Raised/ Flat Face Carbon Steel Flanges manufacturers in India, compare our price of RF Class 600 CS Lap Joint, Tongue and Groove Flange in Mumbai, wide range of RF/ RTJ face Carbon Steel Orifice Flange and CS Spades/ Ring Spacers, Socket Weld Flange, Spectacle Blinds in Mumbai (Maharashtra) and Ahmedabad (Gujarat) warehouses
Density (lb / cu. in.) 0.284
Thermal Conductivity 360
Modulus of Elasticity Torsion 11
Melting Point (Deg F) 2740
Specific Gravity 7.9
Mean Coefficient Thermal Expansion 6.7
Modulus of Elasticity Tension 30
Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) 0.107
Medium Carbon Steel Expander Flanges

Medium Carbon Steel Expander Flanges

5000 NB Fully Killed CS Orifice Flanges

5000 NB Fully Killed CS Orifice Flanges

Carbon Steel Threaded Flange

Carbon Steel Threaded Flange

2500 LBS Fully Killed CS Slip On Flange

2500 LBS Fully Killed CS Slip On Flange

Black Carbon Steel Nipoflange Flanges

Black Carbon Steel Nipoflange Flanges

High Carbon Steel Girth Flanges

High Carbon Steel Girth Flanges

150 LBS CS Socket Weld Flange

150 LBS CS Socket Weld Flange

Galvanized Carbon Steel Spectacle Blind Flange

Galvanized Carbon Steel Spectacle Blind Flange

900 LBS Galvanised CS Long Weld Neck Flange

900 LBS Galvanised CS Long Weld Neck Flange

Black Carbon Steel Lapped Joint Flange

Black Carbon Steel Lapped Joint Flange

Galvanized Carbon Steel Blind Flange

Galvanized Carbon Steel Blind Flange

1500 LBS Galvanised CS BLRF Flanges

1500 LBS Galvanised CS BLRF Flanges

Normalized Carbon Steel Flanges

Normalized Carbon Steel Flanges

Low CS SWRF Flanges

Low CS SWRF Flanges

Killed Carbon Steel Weld Neck Flanges

Killed Carbon Steel Weld Neck Flanges

300 LBS Low Temperature Carbon Steel Tongue & Groove Flange

300 LBS Low Temperature Carbon Steel Tongue & Groove Flange

Low Temp CS SORF Flanges

Low Temp CS SORF Flanges

600 LBS CS WNRF Flange

600 LBS CS WNRF Flange

Low Temp CS Screwed Flange

Low Temp CS Screwed Flange

Killed Carbon Steel Ring Joint Flange

Killed Carbon Steel Ring Joint Flange

15 NB Carbon Steel Grade Reducing Flanges

15 NB Carbon Steel Grade Reducing 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
We can produce large diameter Sch 80 Carbon Steel Pipe Flanges as per customer drawing, fast delivery in Malaysia, UAE, Europe and USA from ready stock, 100% Radiography Test Report
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
Pipe Size
(inches)		 Bolt Hole Diameter
(inches) 1)		 Number of Bolt Holes Flange Outside Diameter
(inches)		 Pipe Outside Diameter
(inches)		 Bolt Circle
(inches)
1/2 5/8 4 3-1/2 0.84 2-3/8
1 5/8 4 4-1/4 1.32 3-1/8
1-1/4 5/8 4 4-5/8 1.66 3-1/2
3/4 5/8 4 3-7/8 1.05 2-3/4
1-1/2 5/8 4 5 1.90 3-7/8
2 3/4 4 6 2.38 4-3/4
3 3/4 4 7-1/2 3.50 6
3-1/2 3/4 8 8-1/2 4.00 7
2-1/2 3/4 4 7 2.88 5-1/2
4 3/4 8 9 4.50 7-1/2
5 7/8 8 10 5.56 8-1/2
6 7/8 8 11 6.63 9-1/2
8 7/8 8 13-1/2 8.63 11-3/4
10 1 12 16 10.75 14-1/4
12 1 12 19 12.75 17
14 1-1/8 12 21 14.00 18-3/4
16 1-1/8 16 23-1/2 16.00 21-1/4
18 1-1/4 16 25 18.00 22-3/4
20 1-1/4 20 27-1/2 20.00 25
24 1-3/8 20 32 24.00 29-1/2

Carbon Steel Pn16 Flange Dimensions

NPS Diameter of Dlanges Bolt Holes Diameter Flange Diameter Flanges Thickness f Flange Inside Daimeter Diameter of Bolt Cirlce Number of Weight In KG
PLATE BLIND
DN Pipe KG D B K D5 holes D2 KG KG
15 21.30 14 95 14 2 22.00 65 4 0.67 0.71
20 26.90 14 105 16 2 27.60 75 4 0.93 1.01
25 33.70 14 115 16 2 34.40 85 4 1.11 1.23
32 42.40 18 140 16 2 43.10 100 4 1.62 1.81
40 48.30 18 150 16 3 49.00 110 4 1.85 2.09
50 60.30 18 165 18 3 61.10 125 4 2.46 2.88
65 76.10 18 185 18 3 77.10 145 4 2.99 3.65
80 88.90 18 200 20 3 90.30 160 8 3.61 4.61
100 114.30 18 220 20 3 115.90 180 8 3.99 5.65
125 139.70 18 250 22 3 141.60 210 8 5.41 8.13
150 168.30 22 285 22 3 170.50 240 8 6.55 10.44
175 193.70 22 315 24 3 196.10 270 8 8.42
200 219.10 22 340 24 3 221.80 295 12 8.97 16.48
250 273.00 26 405 26 3 276.20 355 12 12.76 23.99
300 323.90 26 460 28 3 327.60 410 12 16.60 30.73
350 355.60 26 520 30 4 359.70 470 16 24.08 42.56
400 406.40 30 580 32 4 411.00 525 16 30.20 60.68
450 457.00 30 640 38 4 462.30 585 20 41.67 71.74
500 508.00 33 715 38 4 513.60 650 20 52.87 96.4
600 610.00 36 840 42 4 616.50 770 20 77.58 145.6
700 711.00 77.13 910 44 840 716.00 24 36
800 813.00 106.35 1025 50 950 818.00 24 39
900 914.00 125.39 1125 54 1050 920.00 28 39

Carbon Steel Puddle Flange Dimensions

Carbon Steel Weld Neck Flange Dimensions

Flange NPS H Inside
Diameter		 Flat Face
Thickness (T2)		 Outside
Diameter		 Raised Face
(RF)		 Raised Face
(R)		 H1 Raised Face
Thickness (T)		 T1 Bolt Circle
(BC)		 Bolt Hole
(B)		 No. of
Bolt Holes
1/2" 1.19" 0.62" 1.82" 3.50" .063" 1.38" 0.84" 1.88" .38" 2.38" .62" 4
1-1/4" 2.31" 1.38" 2.19" 4.62" .063" 2.50" 1.66" 2.25" .56" 3.50" .62" 4
3/4" 1.50" 0.82" 2.00" 3.88" .063" 1.69" 1.05" 2.06" .44" 2.75" .62" 4
1-1/2" 2.56" 1.61" 2.38" 5.00" .063" 2.88" 1.90" 2.44" .62" 3.88" .62" 4
1" 1.94" 1.05" 2.13" 4.25" .063" 2.00" 1.32" 2.19" .50" 3.12" .62" 4
2" 3.06" 2.07" 2.44" 6.00" .063" 3.62" 2.38" 2.50" .69" 4.75" .75" 4
2-1/2" 3.56" 2.47" 2.69" 7.00" .063" 4.12" 2.88" 2.75" .82" 5.50" .75" 4
3" 4.25" 3.07" 2.69" 7.50" .063" 5.00" 3.50" 2.75" .88" 6.00" .75" 4
4" 5.31" 4.03" 2.94" 9.00" .063" 6.19" 4.50" 3.00" .88" 7.50" .75" 8
5" 6.44" 5.05" 3.44" 10.00" .063" 7.31" 5.56" 3.50" .88" 8.50" .88" 8
3-1/2" 4.81" 3.55" 2.75" 8.50" .063" 5.50" 4.00" 2.81" .88" 7.00" .75" 8
6" 7.56" 6.07" 3.44" 11.00" .063" 8.50" 6.63" 3.50" .94" 9.50" .88" 8
8" 9.69" 7.98" 3.94" 13.50" .063" 10.62" 8.63" 4.00" 1.06" 11.75" .88" 8
22" 24.25" 21.25" 5.82" 29.50" .063" 25.25" 22.00" 5.88" 1.75" 27.25" 1.38" 20
10" 12.00" 10.02" 3.94" 16.00" .063" 12.75" 10.75" 4.00" 1.13" 14.25" 1.00" 12
12" 14.38" 12.00" 4.44" 19.00" .063" 15.00" 12.75" 4.50" 1.19" 17.00" 1.00" 12
16" 18.00" 15.25" 4.94" 23.50" .063" 18.50" 16.00" 5.00" 1.38" 21.25" 1.12" 16
18" 19.88" 17.25" 5.44" 25.00" .063" 21.00" 18.00" 5.50" 1.50" 22.75" 1.25" 16
14" 15.75" 13.25" 4.94" 21.00" .063" 16.25" 14.00" 5.00" 1.32" 18.75" 1.12" 12
20" 22.00" 19.25" 5.63" 27.50" .063" 23.00" 20.00" 5.69" 1.63" 25.00" 1.25" 20
24" 26.12" 23.25" 5.94" 32.00" .063" 27.25" 24.00" 6.00" 1.82" 29.50" 1.38" 20

SS 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

A Class 150 flange, for example, is rated to 270 PSIG at ambient temperatures, 180 PSIG at 400 degrees Fahrenheit, 150 PSIG at 600 degrees Fahrenheit, and 75 PSIG at 800 degrees Fahrenheit.

The class 300 flange (which is larger and stronger but has the same hole size) can sustain 570 psi at 600 degrees F°.

Hs Code 73072100
  • Oil varnishing aids in the lubrication of carbon steel. Oil protects them from rust while allowing them to move with friction.
  • Anti-rust painting: Painting a carbon steel flange provides a protective covering over metal components. It helps to keep moisture from getting to the metal, preventing rust and corrosion in general.
  • Galvanising or electric zinc-coating (yellow or white zinc): Galvanising or electric zinc-coating is a rust-prevention technology. By covering the metal with a thin layer of zinc, it is simple to prevent water and oxygen from penetrating beneath it.
  • Marine Applications
  • Fossil Fuel Power Plants
  • Paper & Pulp
  • Refineries
  • Nuclear Power
  • Power Plants
  • Ship Building
  • Oil And Gas Industry
  • ASME B16.5 Steel pipe flanges dimensioning standard
  • ASME B16.47 Steel flanges with a large diameter
  • MSS SP 44 Standard for steel pipe line flanges
  • API 605 large diameter carbon steel flanges

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