Carbon steel flanges manufacturer in India
CS flanges are widely manufactured in India which are applicable in pipe-line units for various industrial sectors. Carbon steel flanges are basically made up of carbon and steel alloy which provides properties such as resistance to corrosion, excellent durability, and finishing in goods. The available content of carbon range is about 1% to 2.1% in weight in the CS flanges and are useful to connect valves, pumps and pipes for the piping system.
Flanges are components in pipe systems that hold pipes together with modified faces, collars or processes. As a carbon steel flanges manufacturer in India we produce flanges of different types to be used in different applications. The Carbon Steel Flanges have high wear and tear resistance. They have less corrosion resistance compared to most stainless steels and have less strength compared to some special alloy material, but they are of high cost efficiency. There are different types of flanges used in different applications. Our Carbon Steel Blind Flange is used to close a pipe line in a system. The blind flange has a flat end with which it closes the pipe.
Contact Dinesh industries, a well established carbon steel flanges manufacturer in India.
Manufacturer of forged carbon steel flanges in Mumbai as per ANSI/ ASME B16.5, B16.47 & B16.36
The ASME B16.5 for CS pipe flange with fitting of NPS ½ within NPS 24 Metric/Inch standards covers pressure-temperature ranges, material, dimension, tolerance, marking, checking, and methods of designating for carbon steel flanges.
The ASME B16.47 is a standard for larger diameter carbon steel flanges size from NPS 26 within NPS 60, which provides ratings and dimension in both metric and inch units.
The ASME B16.36 is a standard for carbon steel orifice flanges used for measuring the flow rate of liquids or gases in a pipeline, where pairs of pressure taps, mostly on 2 sides directly opposite from each other are machined into the orifice flange.

Carbon Steel Flanges

Low CS Slip on Flange

Quenching Carbon Steel Flange

Low Temp Carbon Steel Forged Flange

Killed carbon steel Weld Neck Flange

Normalized CS Socket weld Flanges
Supplier of low temperature & normalized carbon steel flanges in different types including blind, slip on, orifice, weld neck, socket weld flange in FF/ RF faces
The carbon steel flange flat face is flat surface completely where used gasket gets packed in as bolting circle face to both connected flat surfaces of 2 flanges in pipeline.
FF faces are meant to prevent the bending movement that is put on flanges as the bolts are torqued. FF are widely used in as low temperature carbon steel flanges with low pressure system of water treatment facilities
Carbon steel raised face flange are raised surface above the bolting circle where the gasket are supposed to be placed in the joining sections. RF faces are meant to concentrate the contact pressure on the gasket area, results in increased strength of the seal and appropriate for both high and low temperature and pressure so have vast uses in oil and gas industry.
There are CS Slip On Flange types which allow pipes to slip through them so the connection could be made in the desired locations. Most flanges are welded together with the pipe for maximum and permanent connectivity. The Carbon Steel Puddle Flange is used to connect two pipes and seal them tight by holding the ends of pipes inside the flange structure. We are leading Manufacturer of Low Temp Carbon Steel flanges. The Carbon Steel Weld Neck Flange has a welded neck that increases the grip with the pipes and welding surface. Our Low Carbon Steel Forged Flange has comparatively higher corrosion resistance and strength but low wear and tear resistance. We supply carbon steel flanges in Singapore, UAE & Malaysia at very competitive price. Please contact us for any query like dimensions, ready stock sizes and latest price list.
Carbon Steel Flanges Manufacturers In India
Table of Content
- Specification Format of Carbon Steel Flanges
- Low Carbon Steel Flange Price List
- Carbon Steel Flange Types
- Flage Face Types of Low CS Flanges
- Different Standards Types of CS Flange
- Various Types of Pressure Class of Quenching Carbon Steel Flanges
- Weight Chart of Low Temperature Carbon Steel Flanges
- Chemical Equation Of CS Forged Flange
- Mechanical Properties Of Carbon Steel Forged Flange
- Quenching CS Flange Pressure Ratings
- Grades Material of CS Flange
- Most Selling CS flange
- Ready Stock of Low CS Flanges
- Product Range & Standards of Carbon Steel Flange

Low Carbon Steel Forged Flange
Specification Format of Carbon Steel Flanges
Manufacturing size range of Dinesh Industries | Normalized carbon steel flanges faces types | Forged carbon steel flanges American standards |
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High & low temp carbon steel flanges pressure class | Types of carbon steel flanges which has highest demand | Manufacturing technique |
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Dinesh Industries can produce plate/ forged CS flanges as per the customer drawing, compare our price and shipping time with other carbon steel flanges manufacturers in India |
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Types of carbon steel blind flanges | Types of carbon steel weld neck flanges | Types of carbon steel slip on flanges |
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Marking | Carbon steel forged flanges finish | Carbon steel pipe flanges installations & applications |
Please note: Dinesh Industries also offer cstom marking |
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CS Flanges DIN & EN standards | Thread types of companion/ screwed or carbon steel threaded flanges | Value added services |
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Meet the requirements of | Testing requirements | Carbon steel flanges manufacturing standards & origin country |
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Flange ASME standard list | HS code for carbon steel forged flanges | |
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Carbon steel flanges grades | High pressure carbon steel flanges | LTCS/ low temperature carbon steel flanges grades |
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Carbon steel flange has a much better tensile strength, it lacks the corrosion-resistant properties, Although it’s stronger and more durable than stainless steel. We are Manufacturer of Large Diameter CS Flanges.
Check carbon steel pipe flanges specification, pressure rating, dimensions, grades and price list in India
Low Carbon Steel Flange Price List
Price list of Carbon Steel Flange | CS Flange Price in INR | CS Flange Price in USD | CS Flange Price in UAE Dirham |
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CARBON STEEL (LWNRTJ) FLANGE CONF. TO SPECN. SA105 SIZE(MM): 150 X 25.40 X 340 Per Piece | 1,314 | $17.91 | UAE Dirham 65.79 |
CS (BLRTJ) FLANGE CONF. TO SPECN. SA105 SIZE(MM): 150 X 0.00 X 37.95 Per Piece | 424 | $5.78 | UAE Dirham 21.23 |
FLANGES CS : WN RF, 300#, CL1 STD, GR.SA/A350 LF2 Per Piece | 171 | $2.33 | UAE Dirham 8.56 |
Carbon Steel Flange Types

Low Temp Carbon Steel Blanks

CS Spacer

CS Reducing Flange

CS Spectacle Blind

Very High Carbon Steel Weld Neck Flanges

Black Carbon Steel Threaded Flange

Low carbon steel Lap Joint Flange

Killed Carbon Steel Slip-On Flange

Plain Carbon Steel Expander Flange

Low Temperature Carbon Steel Long weld neck flange

Low Temperature Carbon Steel Flangeolet / Weldoflange / Nippoflange

Black Carbon Steel Blind Flange

High CS Socket Weld Flange

Low carbon steel Orifice Flange and Plate
Flage Face Types of Low CS Flanges

Low Temp Carbon Steel Flat Face (FF) Flanges

Low Temperature Carbon Steel tongue and groove Flange

Killed CS male- female Flange

High carbon steel SORF Flanges

Low Temp CS SWRF Flanges

CS Ring Joint (RJT) Flanges

Black Steel BLRF Flanges

Plain Carbon Steel WNRF Flanges

Black Steel Raise Face (RF) Flange

Killed CS LWNRF Flanges

Carbon Steel RTJ Flanges
Type of carbon steel flanges in use are as below mentioned:
- Weld neck carbon steel flanges are having large neck and their connecting end is welded to bottom, wherein internal diameter is similar to the flange and used in extreme conditions.
- Carbon steel slip on flange is designed to accept pipe into the bore/centre of the flange for welding around outer diameter of the pipe and interior side of connection. Its also good in use in extreme conditions besides being inferior to neck flanges.
- Carbon steel blind flanges are used in covering the ends of the tube, valves or pipe lines of operating process. Its type of ASME fitting which makes it suitable to resist against extreme conditions of work.
- Threaded carbon steel flanges though do not have any welding feature but make easy quick assembly and useful for implementations within high temperature and pressure wherein male NPT threaded pipes are used.
- Carbon steel tongue and groove flange are standard small or large size type in which the inside diameters of the groove and tongue do not extend into the flange base, thus retaining the gasket on its inner and outer diameter.
- Killed carbon steel flanges are type of forged flange are destroyed in melting process, wherein due to addition of Manganese, Silicon, and Aluminium during the production of steel, deoxidation occurs.
Different Standards Types of CS Flange

ASME B16.5 Low Temperature Carbon Steel Flange

MSS SP-44 Black Steel Pipe Flange

API 590 Plain CS Pipe Flanges

ASME B16.47 Series B Killed Carbon Steel Pipe Flanges

ASME B16.36 Black Steel Pipe Flange

ASME B16.45 High CS Flanges

ASME B16.47 Series A Very High Carbon Steel Flanges

API 605 Black Carbon Steel Flange
Various Types of Pressure Class of Quenching Carbon Steel Flanges

Class 600 CS Flange

Class 2500 Carbon Steel Flanges

Class 400 Low carbon steel Plate Flange

Class 150 Very High Carbon Steel Forged Flanges

Class 900 Low Temp Carbon Steel Flanges

Class 1500 Black CS Pipe Flange

Class 300 CS Pipe Flanges
Weight Chart of Low Temperature Carbon Steel Flanges
Standard | Class | Diameter of Bolt Hole | Bolt Circle Diameter | Diameter | Number of Bolts | Bolt Size |
ANSI B16.5 | ANSI 150 | 16 | 60 | 89 | 4 | 13 |
ANSI 300 | 16 | 67 | 95 | 4 | 13 | |
ANSI 600 | 16 | 67 | 95 | 4 | 13 | |
ANSI 900 | 22 | 83 | 121 | 4 | 19 | |
ANSI 1500 | 22 | 83 | 121 | 4 | 19 | |
AS 2129 Flanges | Table C | 14 | 67 | 95 | 4 | 13 |
Table D | 14 | 67 | 95 | 4 | 13 | |
Table E | 14 | 67 | 95 | 4 | 13 | |
Table F | 14 | 67 | 95 | 4 | 13 | |
Table H | 17 | 83 | 114 | 4 | 16 | |
Table J | 17 | 83 | 114 | 4 | 16 | |
ISO 7005 (DIN) Flange | PN6 | 11 | 55 | 80 | 4 | M10 |
PN10 | 14 | 65 | 95 | 4 | M12 | |
PN16 | 14 | 65 | 95 | 4 | M12 | |
PN20 | 16 | 60.5 | 90 | 4 | M14 | |
PN25 | 14 | 65 | 95 | 4 | M12 | |
PN40 | 14 | 65 | 95 | 4 | M12 | |
AS4087 | PN14 | 14 | 67 | 95 | 4 | M12 |
Know the manufacturing process of carbon steel forged flanges and CS plate flange, wide selection of low temp carbon steel flanges in class 150-2500
Carbon steel forged flanges are manufactured using forging machines wherein steel bars are heated and shaped under high pressure and temperature.
It allows for flange dimension and shape customization, mostly applicable for high pressure, high temperature, critical applications of chemical, petrochemical, oil and gas industry.
Carbon steel plate flange are flat flanges made by cut and drilled according to flange dimension. The bolt holes are thin and lighter used in low pressure and non-critical applications like water supply, irrigation and HVAC systems. Forged carbon steel flanges are better than plate flange in aspect of corrosive properties, meanwhile plate flanges are less expensive than forged flanges.
Chemical Equation Of CS Forged Flange
Element
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Weight %
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Carbon
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0.08 – 0.15
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Silicon
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0.15 – 0.50
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Manganese
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0.30 – 0.60
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Phosphorus
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0.025 max *
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Sulphur
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0.025 max *
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Molybdenum
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0.90 – 1.10
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Chromium
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2.00 – 2.50
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Nickel
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0.5 max
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Mechanical Properties Of Carbon Steel Forged Flange
Property
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Values
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Ultimate Tensile Strength *
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95 min Ksi (655 Mpa)
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0.2 % Yield Strength *
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75 min Ksi (517 Mpa)
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Elongation *
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17 % min
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Reduction of Area *
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35 % min
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Charpy Impact Toughness
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42 mean/ 33 min J at –18o C
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Hardness
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197 – 237 BHN (75 Ksi min)
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We are Manufacturer of ANSI B16.5 Carbon Steel Blind Flange Which is Highly durable, flexible and long-lasting.
Quenching CS Flange Pressure Ratings
Flanges pressure rating in psig for common CS ASME flanges
( A105 / A350 LF2 / A350 LF3 / A350 LF6) |
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Temperature (F°)
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150#
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300#
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400#
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600#
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900#
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1500#
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2500#
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-20 to 100
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285
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740
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985
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1480
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2220
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3705
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6170
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200
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260
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680
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905
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1360
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2035
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3395
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5655
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300
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230
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655
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870
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1310
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1965
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3270
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5450
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400
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200
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635
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845
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1265
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1900
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3170
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5280
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500
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170
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605
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805
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1205
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1810
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3015
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5025
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600
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140
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570
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755
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1135
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1705
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2840
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4730
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650
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125
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550
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730
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1100
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1650
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2745
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4575
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700
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110
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530
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710
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1060
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1590
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2655
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4425
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750
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95
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505
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675
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1015
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1520
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2535
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4230
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800
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80
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410
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550
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825
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1235
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2055
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3430
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850
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65
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320
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425
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640
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955
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1595
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2655
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900
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50
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230
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305
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460
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690
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1150
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1915
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950
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35
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135
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185
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275
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410
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685
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1145
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1000
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20
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85
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115
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170
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255
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430
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715
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Exporter & supplier of threaded, slip on & weld neck carbon steel flanges in India, view advantages and installation process
Carbon steel pipe flanges are mode of connecting for 2 particular pipe line joints section, an advantage of such flanges is that they are convenient for welding and processing with high strength. Such connections are affordable for future disconnecting, reconnecting and zero-clearance assembly for easier maintenance activities, tube and hose connection.
Carbon steel flange are installed via welding, screwing, or lapping and in installation of flange, initially flange is placed in the pipe end, welding ring is then welded in pipe end, welding sky further is used as the sealing surface and tighten the two flanges to connect the pipe fittings. Also, some safety concern and plant external as well as internal pipe line units are considered like shutdowns and change of flow directions and others are to be known before work proceeds.
Grades Material of CS Flange
Material | Size (mm) | SCH/ CLASS | Type | Specification | Manufacturing Method |
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CS/LTCS Flange | 15NB to 600NB ASME Standard B16.5 | 150#, 300#, 900#, 1500#, 2500# | Weld Neck, SORF, BLIND, SWRF, RING JOINT | A182/A105/ A350LF | FORGED |
CS/LTCS Flange | 650NB to 1500NB ASME B16.47 SER.B (API 605) |
Class 75/150/300 | Weld Neck, BLIND | A182/A105/ A350LF | FORGED |
CS/LTCS Flange | 650NB to 1500NB ASME/ANSI B16.47 SER.A (MSS SP 44) |
Class 150/300/600 | Weld Neck, BLIND | A182/A105/ A350LF | FORGED |
CS/LTCS Flange | 10NB to 1500NB JIS & KS Flanges |
Class 5K, 10K, 16K, 20K, 30K | SLIP ON, WELD NECK | A182/A105/ A350LF | FORGED/PLATE |
CS/LTCS Flange | 10NB to 1000NB DIN Flanges |
Class 6Bar, 10Bar, 16Bar, 25Bar, 40Bar | SLIP ON, BLIND, WELD NECK | A182/A105/ A350LF | FORGED/PLATE |
CS/LTCS Flange | 650NB to 900NB BS 3293 Flanges |
150lb/sq.in, 300lb/sq.in., 600lb/sq.in | WELD NECK | A182/A105/ A350LF | FORGED |
CS/LTCS Flange | 1000NB to 3000NB AWWA C207 Flanges |
Table 1 *Class B (86 PSI) *Class D(150-175PSI) |
SLIP ON FF, BLIND FF | A182/A105/ A350LF | FORGED/PLATE |
Table 2 *Class B (86 PSI) *Class D(150-175PSI) |
SLIP ON FF WITH HUB, BLIND FF | A182/A105/ A350LF | FORGED | ||
Table 3 *Class E (275 PSI) |
SLIP ON FF WITH HUB, BLIND FF | A182/A105/ A350LF | FORGED |
Most Selling CS flange

Carbon Steel Loose Flanges

CS AS 4087 Water Flanges

Ansi 150 Carbon Steel Flanges

MSS SP-44 Carbon Steel SW Flange, PN150, RF

Carbon Steel Pipe Flanges

CS Blind Flanges

Carbon Steel Screwed Flanges

Carbon Steel Reducing Flanges

carbon steel blind flange

Carbon Steel Lap Joint Flanges

Class 600 Carbon Steel Flanges

Carbon Steel Socket Weld Flanges

Raised Face Weld Neck Flange, ANSI B16.5, A105, PN50, DN200

Carbon Steel Large Diameter Flanges

Carbon Steel Long Weld Neck Flanges

Weld Neck Orifice Flange, 12 Inch, 300#, RF, Carbon Steel

class 150 carbon steel flange

Carbon Steel Square Flanges

Carbon Steel Socketweld Flanges

Carbon Steel Table Flanges

Carbon Steel Orifice Flanges

ANSI B16.47 Carbon Steel Pipe Flanges

SCH STD 900LB Orifice Welded Neck Flanges

CS+-
Threaded Flanges

carbon steel spectacle blind flange

ASTM A694 CS Slip-On Flange

Carbon Steel Exhaust Flanges

Carbon Steel Class 150 Flanges

Carbon Steel Threaded Flange, 150 LB, 1/2IN, RF

Carbon Steel Puddle Flanges

Carbon Steel Plate Flanges

Carbon Steel Sorf Flanges

CS Slip On Flanges

Carbon Steel Slip-On Flanges

Carbon Steel RTJ Flanges

CS Weld Neck Flanges
Ready Stock of Low CS Flanges
A105 Carbon Steel RTJ Flanges
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CS A105 BLRF Flanges
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CS A105 SORF Flanges
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Carbon Steel A350 Split Flanges
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CS A105 Puddle Flanges
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ASME SA105 Carbon Steel Reducing Flanges
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CS SAE Flanges
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ASTM A694 CS Exhaust Flanges
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CS Screwed Flanges
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ASME SA105 CS Tank Flanges
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CS A694 Flanges
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Carbon Steel WNRF Flanges
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CS Flanges
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EN 1092-1 Flanges
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Product Range & Standards of Carbon Steel Flange
Product Form | Standards |
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Forged Flanges | ASME B16.5, ASME B16.47, MSS SP 44, EN 1092-1, NORSOK L-005, BS 4504, ASME B16.48, ASME B16.36 |
Forged Fittings | ASME B16.11, BS 3799, MSS SP 83, MSS SP 95, MSS SP 97, GB/T14383, GB/T14626 |
Valve & Valve Parts | ASME B16.34, API 600, API 602 |
Boiler & Pressure Vessel | ASME Section IX |
We Are PED approved ANSI B16.48 Carbon Steel Long Weld Neck Flange Manufacturer in India
We export in below contry also find estimated delivery time
Export Location | WNRF FLANGE 150# A105 SCH STD Size |
Price | Estimated delivery days |
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Ukraine | 1/2″ | US $4.583 | 60 |
Netherland | 3/4″ | US $4.767 | 30 |
Egypt | 1″ | US $5.317 | 18 |
Greece | 1-1/4″ | US $6.417 | 45 |
Czech Republic | 1-1/2″ | US $7.150 | 45 |
Slovakia | 2″ | US $8.250 | 45 to 60 |
Finland | 2-1/2″ | US $11.917 | 45 to 60 |
Croatia | 3″ | US $12.833 | 60 |
Slovenia | 4″ | US $17.417 | 60 |
Turkey | 5″ | US $33.000 | 21 |
Belgium | 6″ | US $36.667 | 40 |
Switzerland | 8″ | US $51.333 | 45 to 60 |
Ireland | 10″ | US $64.167 | 60 |
Albania | 12″ | US $91.667 | 45 |
Austria | 14″ | US $174.167 | 60 |
Singapore | 16″ | US $192.500 | 8 |
Azerbaijan | 18″ | US $265.833 | 30 to 45 |
Libya | 20″ | US $339.167 | 45 to 60 |
Portugal | 24″ | US $375.833 | 45 |