Dinesh Industries > Alloy Steel Flanges

Alloy steel flanges manufacturer in India

Alloy steel flanges are mainly made up of chromium, molybdenum, and nickel composition along with other products. These flanges show excellent corrosion and oxidation resistance. They are widely used in water lines, oil, and gas, chemical plants, food production systems, etc. We are the leading Alloy Steel Flanges Manufacturers in India. We aim to produce top-quality products at the most reasonable rates.

Alloy Steel Flanges

Alloy Steel Flanges

Chrome AS Blind Flange

Chrome AS Blind Flange

High Alloy Steel Slip on Flange

High Alloy Steel Slip on Flange

Low Alloy Steel Weld Neck Flange

Low Alloy Steel Weld Neck Flange

4130 Chromoly Threaded Flange

4130 Chromoly Threaded Flange

Chromoly 4130 Reducing Flange

Chromoly 4130 Reducing Flange

Chrome moly flanges & alloy steel blind flange supplier in India, manufacturing standard ASME B16.5

The ANSI B16.5 Alloy Steel Slip On Flange can be slid on any pipe and welded in exact positions. They are the most popular and cost-effective flanges in the market. The High Alloy Steel Slip on Flange is made up of high qualities of alloyed material. These flanges contain at least 12% of chromium and are known for their hardenability. Low Alloy Steel Weld Neck Flange is designed with good mechanical properties. These flanges have a protruding hub, which provides support to pipes in high-pressure applications. The 4130 Chromoly Threaded Flange is used as companion flanges in piping systems. Our experienced workers make use of the latest technology and best raw materials whilst producing the ASME SA 182 AS Pipe Flange and our other products.

The Chromoly 4130 Reducing Flange is used to combine pipes of different shapes and sizes. They are designed with a bore having a specified diameter. Alloy Steel Socket Weld Flanges are used in higher-pressure systems having small pipes. They are fitted after applying a fillet weld. The Chrome AS Blind Flange is designed with a boring center. They are used in sealing the nozzles or openings in piping systems. They can be welded permanently or bolted as per requirement. The Alloy Steel Blind Flanges along with, our other products can be easily customized as per your needs in different shapes and sizes. Contact us to know more.

Specification Chart of Alloy Steel Flanges

Manufacturing size range of Dinesh Industries Faces types American standards of chrome moly flanges
  • 1/2″ to 48″
  • 15NB – 1200NB
  • PN 2.5 – PN 400
  • For large or custom alloy flanges sizes please contact our sales team (India)
  • Flat Face or Plain Face (FF)
  • RTJ – Ring Joint
  • Raised Face (RF)
  • Lap Joint – LJ
  • Tongue and Groove – T&G
  • Male Female face – M&F
  • ASME/ ANSI B16.5: Class 150 – 2500LBS
  • ASME/ ANSI B16.36 (Orifice)
  • ASME/ ANSI B16.47: Series A/ B
  • ASME/ ANSI B16.48 (Spectacle Blinds)
Alloy steel pipe flanges pressure class Types of AS flanges which has highest demand Manufacturing technique
  • Class 150
  • Class 300
  • Class 600
  • Class 900
  • Class 1500
  • Class 2500
  • Chrome moly/ alloy steel socket weld flanges
  • AS slip on flanges
  • Chrome moly/ alloy steel lap joint flanges
  • Alloy steel weld neck flanges
  • Chrome moly/ alloy steel blind flanges
  • AS reducing flange
  • Chrome moly/ AS threaded flanges

Dinesh Industries can produce material as per the customer drawing, compare our price and shipping time with other alloy steel flanges manufacturers in India

  • Forged (Most popular)
  • Plate
  • Cast
Types of alloy steel blind flanges Types of alloy steel weld neck flanges Types of alloy steel slip on flanges
  • AS raised face blind flange
  • chrome moly flat face blind flange
  • AS ring type joint blind flange
  • Chrome moly threaded blind flange
  • Alloy steel forged blind flange
  • Chrome moly raised face weld neck flange
  • AS flat face weld neck flange
  • AS long weld neck flange
  • Chrome moly ring type joint weld neck flange
  • AS raised face slip on flange
  • Chrome moly flat face slip on flange
  • AS ring type joint slip on flange
  • Chrome moly threaded slip on flange
  • AS forged slip on flange
Marking Alloy flanges finish Alloy steel forged flanges installations & applications
  • Manufacturer logo / name
  • Manufacturing date
  • Material grade
  • Sizes
  • ASTM/ ASME standard
  • Face type
  • Pressure class
  • Origin of country

Please note: Dinesh Industries also offer cstom marking

  • Stock Finish
  • Serrated finish
  • Spiral Serrated
  • Concentric Serrated
  • Smooth Finish
  • Cold Water Finish (mirror finish)
  • Gas, Oil & petrochemical plants
  • Industrial vessels
  • Power plants
  • Nuclear power
  • Industrial mechanical systems
  • Industrial piping connection ( Low/ High pressure)
DIN & EN standards of alloy steel flange Thread types of companion/ screwed or alloy steelthreaded flanges Value added services
  • Alloy Steel Flat Flange
    Type 1
    DIN 2578, 2573
  • AS Blind Flange
    Type 5
    DIN 2527
  • Alloy Steel Weld Neck Flange
    Type 11
    DIN 2627 to 2638
  • AS Threaded Flange
    Type 12
    DIN 2558, 2565, 2566, 2567, 2568, 2569
  • Alloy Steel Lapped Flange
    Type 2, 4
    DIN 2622, 2641, 2655, 2656
  • NPT – MPT/ MNPT (Male), FPT, FNPT (Female) – Standard ASME B1.20.1
  • BSP – BSPP (Female & male), BSPT (Female)
  • MTR’s Available
  • 24-hour emergency service
  • De-burring
  • Cutting
  • Metal stampings
  • Hot dipped galvanized
  • Coating/ polishing
  • Beveling end
  • Marking tagging
Alloy steel pipe flange meet the requirements of Inspection checklist for AS flanges Alloy steel flange manufacturing standards & origin country
  • Sour service
  • NACE MR0175
  • NACE MR0103
  • ISO 15156
  • NACE TM-0284
  • Verify alloy steel flange material are manufactured as per the work order
  • Material inspection
  • hardness test
  • tensile test
  • impact test
  • visual inspection
  • AS flanges dimensional check by ruler, calibrated caliper or tape
  • Dry film thickness check (for coating thickness by an elcometer)
  • shell pressure test
  • Positive Material Identification Test (PMI) – Important test to check chemical composition
  • ANSI – USA
  • BS EN 1092-1 (Steel) – Europe
  • PN – Europe
  • BS EN 1092-3 (Alloy)- Europe
  • ISO 7005- Europe
  • ASME- USA
  • BS 10- UK & Australia
  • BS EN 1092-2 (Iron)- Europe
  • DIN- Germany
  • EN- Europe
  • Ghost – Russia
  • ASA – USA
  • JIS – Japan
  • AWWA – USA
  • KS – Korea
  • AS 2129 – Australia
  • API-605 – USA
  • NF E 29-200/ NF E 29-203 – Framce
  • MSS SP44 – USA
  • MS 253 – Malaysia
  • MS 816 – Malaysia
  • CL 125 (Light weight) – USA
  • GB/T 9112 / 9119 – China
  • CSA B16.5/ B16.47 – Canada
  • UNI 2276/ 6091 – Italy
Flange ASME standard list HS code for carbon steel forged flanges Alloy steel flanges grades
  • ASME B16.21 – Nonmetallic Flat Gaskets for Steel Flanges
  • ASME B16.24 – Cast Copper Flanges: 150 to 2500 classes
  • ASME B16.36 – Orifice Flanges
  • ASME B16.34 – Large Diameter Flanges (26 to 60 NPS)
  • ASME B16.42 – Ductile Iron Flanges, 150 and 300 class
  • ASME B16.47 – Large Diameter Flanges (26 to 60 NPS)
  • ASME B16.1 – Gray Iron Flanges and Flanged Fittings: 25, 125, and 250 classes
  • ASME B16.5 – Forged Flanges, NPS 1/2 to 24″
  • ASME B16.20 – Ring Joint Gaskets for Steel Flanges
  • 73079190

Manufacturer of alloy steel forged flanges in weld neck, slip on, reducing and socket weld types in Mumbai, view sizes and price list

High Alloy Steel Flange Price List

Price List of High Alloy Steel Flange Per Piece in India Price of Alloy Steel Flange in INR Price of AS Flange in Saudi Riyal Price of Low Alloy Steel Flange in UAE Dirham
FLANGES ALLOY STEEL SA182 DN350 THK 49.53MM Per Kg Rs. 1,826 US $24.62 UAE Dirham 90.49

Exporter & supplier of low alloy steel flanges in forged, plate & threaded technique, call now for a fastest quote

Avaialble Types of Chrome AS Flange

Chromium Alloy Steel Threaded Flange

Chromium Alloy Steel Threaded Flange

Low Alloy Steel Spectacle Blind

Low Alloy Steel Spectacle Blind

As Weld Neck Flanges

As Weld Neck Flanges

Chromoly Steel Alloy Slip-On Flange

Chromoly Steel Alloy Slip-On Flange

Cast Alloy Steel Flangeolet / Weldoflange / Nippoflange

Cast Alloy Steel Flangeolet / Weldoflange / Nippoflange

Aisi 4130 Chromoly Steel Blanks

Aisi 4130 Chromoly Steel Blanks

Chromoly Expander Flange

Chromoly Expander Flange

Scm415 Chromoly Socket Weld Flange

Scm415 Chromoly Socket Weld Flange

Chromoly Aisi 4130 Lap Joint Flange

Chromoly Aisi 4130 Lap Joint Flange

4140 Low Alloy Steel Blind Flange

4140 Low Alloy Steel Blind Flange

Chromoly Aisi 4130 Long weld neck flange

Chromoly Aisi 4130 Long weld neck flange

Chromoly Orifice Flange and Plate

Chromoly Orifice Flange and Plate

Alloy Steel Reducing Flange

Alloy Steel Reducing Flange

Chrome Alloy Steel Spacer

Chrome Alloy Steel Spacer

Connect Face Types of Low Alloy Steel Flange

4140 Alloy Steel Flat Face (FF) Flanges

4140 Alloy Steel Flat Face (FF) Flanges

Chromium Alloy Steel SWRF Flanges

Chromium Alloy Steel SWRF Flanges

4150 Alloy Steel WNRF Flanges

4150 Alloy Steel WNRF Flanges

Scm415 Chromoly RTJ Flanges

Scm415 Chromoly RTJ Flanges

Alloy Steel LWNRF Flanges

Alloy Steel LWNRF Flanges

Chromoly Alloy Ring Joint (RJT) Flanges

Chromoly Alloy Ring Joint (RJT) Flanges

Chromoly 4130 Raise Face (RF) Flange

Chromoly 4130 Raise Face (RF) Flange

High Alloy Steel BLRF Flanges

High Alloy Steel BLRF Flanges

4130 Alloy Steel SORF Flanges

4130 Alloy Steel SORF Flanges

Low Alloy Steel tongue and groove Flange

Low Alloy Steel tongue and groove Flange

4140 Low Alloy Steel male- female Flange

4140 Low Alloy Steel male- female Flange

Supplier of alloy steel slip on flange in RTJ, RF & FF face, check specification and grades

Different Manufacturing Standards Types of 4130 Chromoly Flange

ASME B16.5 Chromoly Steel Alloy Flange

ASME B16.5 Chromoly Steel Alloy Flange

ASME B16.36 High Alloy Steel Pipe Flange

ASME B16.36 High Alloy Steel Pipe Flange

API 605 Chrome Alloy Steel Flange

API 605 Chrome Alloy Steel Flange

ASME B16.45 4145 Alloy Steel Flanges

ASME B16.45 4145 Alloy Steel Flanges

ASME B16.47 Series A Cast Alloy Steel Flanges

ASME B16.47 Series A Cast Alloy Steel Flanges

API 590 Chromoly Alloy Pipe Flanges

API 590 Chromoly Alloy Pipe Flanges

ASME B16.47 Series B Chromoly Steel Pipe Flanges

ASME B16.47 Series B Chromoly Steel Pipe Flanges

MSS SP-44 4150 Alloy Steel Pipe Flange

MSS SP-44 4150 Alloy Steel Pipe Flange

Types of Pressure Class of Alloy Steel Flanges

Class 900 Chromoly Steel Flanges

Class 900 Chromoly Steel Flanges

Class 600 Chromoly 4130 Flange

Class 600 Chromoly 4130 Flange

Class 2500 Aisi 4130 Chromoly Steel Flanges

Class 2500 Aisi 4130 Chromoly Steel Flanges

Class 150 4130 Alloy Steel Forged Flanges

Class 150 4130 Alloy Steel Forged Flanges

Class 1500 4140 Alloy Steel Pipe Flange

Class 1500 4140 Alloy Steel Pipe Flange

Class 300 As Pipe Flanges

Class 300 As Pipe Flanges

Class 400 4145 Alloy Steel Plate Flange

Class 400 4145 Alloy Steel Plate Flange

Scm415 Chromoly Flanges Pressure Ratings

ANSI/ASME B16.34 ANSI PRESSURE RATING
Temperature °F 150# 300# 400# 600# 900# 1500# 2500#
-20 to 100 265 695 925 1390 2085 3470 5785
200 260 680 905 1360 2035 3395 5660
300 230 655 870 1305 1955 3260 5435
400 200 640 855 1280 1920 3200 5330
500 170 620 830 1245 1865 3105 5180
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 570 755 1135 1705 2840 4730
750 95 530 710 1065 1595 2660 4430
800 80 510 675 1015 1525 2540 4230
850 65 485 650 975 1460 2435 4060
900 50 450 600 900 1350 2245 3745
950 35 280 375 560 845 1405 2345
1000 20 165 220 330 495 825 1370
Manufacturer of chromoly flanges in various types & pressure class, view our manufacturing capabilities & testing plan

Dimensions Table of AS Flange

Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 95 67 4 M12 14
AS 2129 Flange Table C 95 67 4 13 14
Table D 95 67 4 13 14
Table E 95 67 4 13 14
Table F 95 67 4 13 14
Table H 114 83 4 16 17
Table J 114 83 4 16 17
ANSI B16.5 ANSI 150 89 60 4 13 16
ANSI 300 95 67 4 13 16
ANSI 600 95 67 4 13 16
ANSI 900 121 83 4 19 22
ANSI 1500 121 83 4 19 22
ISO 7005 (DIN) Flange PN6 80 55 4 M10 11
PN10 95 65 4 M12 14
PN16 95 65 4 M12 14
PN20 90 60.5 4 M14 16
PN25 95 65 4 M12 14
PN40 95 65 4 M12 14

Chemical Properties of Alloy Steel Socket Weld Flanges

Grade C Mn Si P S Cr Mo
F1 0.15 max 0.3-0.6 0.5 0.03 0.03 4-6 0.44-0.65
F5 0.15 max 0.3-0.6 0.5-1.0 0.03 0.03 4-6 0.44-0.65
F9 0.15 max 0.3-0.6 0.5-1.0 0.03 0.03 8-10 0.9-1.1
F11 0.5-0.15 0.3-0.6 0.5-1.0 0.03 0.03 1.0-1.5 0.44-0.65
F12 0.15 max 0.3-0.6 0.5 0.03 0.03 4-6 0.44-0.65
F22 0.50.15 max 0.3-0.6 0.5 0.03 0.03 4-6 0.44-0.65
F91 0.15 max 0.3-0.6 0.5-1.0 0.03 0.03 8-10 0.9-1.1

Chromoly 4130 Reducing Flange Mechanical Properties

Grade Tensile Strength Yield Strength (0.2%Offset) Elongation
F1 275 485 20 %
F5 275 485 20 %
F9 380 585 20 %
F11 205 415 20 %
F12 275 485 20 %
F22 205 415 20 %
F91 380 585 20 %

ASME SA 182 AS Pipe Flange Weight Table

CLASS Nominal Pipe Size Slip On Flange Threaded Flange Socket Weld Flange Lap Joint Flange Blind Flange Weld Neck Flange
150 lb ½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
3 3 3 3 4 4
2 5 5 5 5 5 6
8 8 8 8 7 10
3 9 9 9 9 9 11.5
11 12 11 11 13 12
4 13 13 13 13 17 16.5
5 15 15 15 15 20 21
6 19 19 19 19 27 26
8 30 30 30 30 47 42
10 43 43 43 43 70 54
12 64 64 64 64 123 88
14 90 90 90 105 140 114
16 106 98 98 140 180 140
18 130 130 130 160 220 165
20 165 165 165 195 285 197
22 185 185 185 245 355 225
24 220 220 220 275 430 268
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
300 lb ½ 2 2 3 2 2 2
¾ 3 3 3 3 3 3
1 3 3 3 3 4 4
4.5 4.5 4 4.5 6 5
6.5 6.5 6 6.5 7 7
2 7 7 7 7 8 9
10 10 10 10 12 12
3 13 14 13 14.5 16 18
17 17 17 17 21 20
4 23.5 24 22 24 28 26.5
5 29 31 28 28 37 36
6 39 39 39 39 50 45
8 58 58 58 58 81 69
10 81 81 81 91 124 100
12 115 115 115 140 185 142
14 165 165 165 190 250 206
16 210 220 190 234 315 250
18 253 280 250 305 414 320
20 315 325 315 375 515 400
22 370 370 370 435 640 465
24 490 490 475 550 800 580
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
400 lb ½ 2 2 2 2 2 3
¾ 3 3 3 3 3 3.5
1 3.5 3.5 3.5 3.5 4 4
4.5 4.5 4.5 4.5 6 4.5
6.5 6.5 6.5 6.5 8 8
2 8 8 8 8 10 10
12 12 12 11 15 14
3 15 15 15 14 20 18
21 21 21 20 29 26
4 26 26 26 25 33 35
5 31 31 31 29 44 43
6 44 44 44 42 61 57
8 67 67 67 64 100 89
10 91 91 91 110 155 125
12 130 130 130 152 226 175
14 191 191 191 210 310 233
16 253 253 253 280 398 295
18 310 310 310 345 502 360
20 378 378 378 420 621 445
22 405 405 405 455 720 505
24 539 539 539 615 936 640
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
600 lb ½ 2 2 2 2 3 3
¾ 3 3 3 3 4 4
1 4 4 4 4 4 4
5 5 5 5 6 6
7 7 7 7 8 8
2 9 9 9 9 10 12
13 13 13 12 15 18
3 16 16 16 15 20 23
21 21 21 20 29 26
4 37 37 37 36 41 42
5 63 63 63 63 68 68
6 80 80 80 78 86 81
8 115 15 15 112 140 120
10 177 177 177 195 231 190
12 215 215 215 240 295 226
14 259 259 259 290 378 347
16 366 366 366 400 527 481
18 476 476 476 469 665 555
20 612 612 612 604 855 690
22 590 590 590 670 1000 720
24 876 876 876 866 1250 977
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
900 lb ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 7.5 7.5 7.5 7.5 9 8.5
10 10 10 10 10 10
14 14 14 14 14 14
2 22 22 22 21 25 24
31 31 31 25 32 31
3 36 36 36 29 35 36
4 53 53 53 51 54 53
5 83 83 83 81 87 86
6 110 110 110 105 115 110
8 172 172 172 190 200 187
10 245 245 245 277 290 268
12 326 326 326 371 415 372
14 400 400 400 415 520 562
16 459 459 459 488 619 685
18 647 647 647 670 880 924
20 792 792 792 868 1107 1164
24 1480 1480 1480 1659 2099 2107
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
1500 lb ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 8 8 8 8 9 9
10 10 10 10 10 10
14 14 14 14 14 14
2 25 25 25 25 25 25
36 36 36 35 35 36
3 48 48 48 47 48 48
4 73 73 73 75 73 73
5 132 132 132 140 140 132
6 165 165 165 170 160 165
8 260 260 260 286 302 275
10 436 436 436 485 510 455
12 667 667 667 749 775 690
14 940 940 940 890 975 940
16 1250 1250 1250 1250 1300 1250
18 1625 1625 1625 1475 1750 1625
20 2050 2050 2050 1775 2225 2050
24 2825 2825 2825 2825 3625 3325
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
2500 lb ½ …. 7 …. 7 7 8
¾ …. 9 …. 8 10 9
1 …. 12 …. 12 12 13
…. 18 …. 17 18 20
…. 25 …. 24 25 28
2 …. 38 …. 37 39 42
…. 55 …. 53 56 52
3 …. 83 …. 80 86 94
4 …. 127 …. 122 133 146
5 …. 210 …. 204 223 244
6 …. 323 …. 314 345 378
8 …. 485 …. 471 533 576
10 …. 925 …. 897 1025 1068
12 …. 1300 …. 1262 1464 1608

Size Range of Alloy Steel Flanges

Nominal Pipe Size Outside Diameter of Flange Thickness of Flange Diameter of Raised Face Diameter of Hub at Base Length Thru Hub Diameter or Bore Diameter of Hub at Bevel Radius of Fillet Depth of Socket
Welding Neck Slip-On Threaded Socket Lap Joint Slip-on Socket Lap Joint
O Q R X Y Y Y W B H r Z
1/2 3-1/2 7/16 1-3/8 1-3/16 1-7/8 5/8 5/8 .88 .90 .84 1/8 3/8
3/4 3-7/8 1/2 1-11/16 1-1/2 2-1/16 5/8 5/8 1.09 1.11 1.05 1/8 7/16
1 4-1/4 9/16 2 1-15/16 2-3/16 11/16 11/16 1.36 1.38 1.32 1/8 1/2
1-1/4 4-5/8 5/8 2-1/2 2-5/16 2-1/4 13/16 13/16 1.70 1.72 1.66 3/16 9/16
1-1/2 5 11/16 2-7/8 2-9/16 2-7/16 7/8 7/8 1.95 1.97 1.90 1/4 5/8
2 6 3/4 3-5/8 3-1/16 2-1/2 1 1 2.44 2.46 2.38 5/16 11/16
2-1/2 7 7/8 4-1/8 3-9/16 2-3/4 1-1/8 1-1/8 2.94 2.97 2.88 5/16 3/4
3 7-1/2 15/16 5 4-1/4 2-3/4 1-3/16 1-3/16 3.57 3.60 3.50 3/8 13/16
3-1/2 8-1/2 15/16 5-1/2 4-13/16 2-13/16 1-1/4 1-1/4 4.07 4.10 4.00 3/8 7/8
4 9 15/16 6-3/16 5-5/16 3 1-5/16 1-5/16 4.57 4.60 4.50 7/16 15/16
5 10 15/16 7.5/16 6-7/16 3-1/2 1-7/16 1-7/16 5.66 5.69 5.56 7/16 15/16
6 11 1 8-1/2 7-9/16 3-1/2 1-9/16 1-9/16 6.72 6.75 6.63 1/2 1-1/16
8 13-1/2 1-1/8 10-5/8 9-11/16 4 1-3/4 1-3/4 8.72 8.75 8.63 1/2 1-1/4
10 16 1-3/16 12-3/4 12 4 1-15/16 1-15/16 10.88 10.92 10.75 1/2 1-5/16
12 19 1-1/4 15 14-3/8 4-1/2 2-3/16 2-3/16 12.88 12.92 12.75 1/2 1-9/16
14 21 1-3/8 16-1/4 15-3/4 5 2-1/4 3-1/8 14.14 14.18 14.00 1/2 1-5/8
16 23-1/2 1-7/16 18-1/2 18 5 2-1/2 3-7/16 16.16 16.19 16.00 1/2 1-3/4
18 25 1-9/16 21 19-7/8 5-1/2 2-11/16 3-13/16 18.18 18.20 18.00 1/2 1-15/16
20 27-1/2 1-11/16 23 22 5-11/16 2-7/8 4-1/16 20.20 20.25 20.00 1/2 2-1/8
24 32 1-7/8 27-1/4 26-1/8 6 3-1/4 4-3/8 24.25 24.25 24.00 1/2 2-1/2

Tolerance Chart of High Alloy Steel Flanges

Alloy Steel Flanges Tolerance
A Outside Diameter (O.D.)
  • When Outside Diameter (O.D.) is 24″ or less: ±1/16″ (1.6 mm)
  • When Outside Diameter (O.D.) is over 24″: ±1/8″ (3.2 mm)
D Inside Diameter
  • 10″ and smaller: ±1/32″ (0.8 millimeter)
  • 12″ thru 18″: +1/8″ (3.2 millimeter)
  • 20″ and larger: -1/16″ (1.6 millimeter)
B Diameter of contact face
  • 1/16″ raised face: ±1/32″ (0.8 millimeter)
  • 1/4″ Raised Face (RF), Tongue & Groove (T/G), (male & female), (m/f): ±1/64″ (0.4 mm)
J Diameter of hub at base
  • When hub base is 24″ or smaller: ±1/16″ (1.6 millimeter)
  • When hub base is over 24″: ±1/8″ (3.2 millimeter)
H Diameter of hub at point of welding
  • 5″ and smaller: +3/32″ (2.4 millimeter), -1/32″ (0.8 millimeter)
  • 6″ and larger: +5/32″ (4.0 millimeter), -1/32 (0.8 millimeter)
P Drilling
  • Bolt circle: ±1/16″ (1.6 millimeter)
  • Bolt hole spacing: ±1/32″ (0.8 millimeter)
Eccentricity of bolt circle with respect to facing
  • 2 1/2″ and smaller ±1/32″ (0.8 millimeter) max.
  • 3″ and larger ±1/16″ (1.6 millimeter) max.
C Thickness
  • 18″ and smaller: ±1/8″ (3.2 millimeter), -0″
  • 20″ and larger: ±3/16″ (4.8 millimeter), -0″
K Length of hub
  • 10″ and smaller: ±1/16″ (1.6 millimeter)
  • 12″ and larger: ±1/8″ (3.2 millimeter)

Stock List of ASTM A182 Low Alloy Steel flanges

Alloy Steel Lap Joint Flanges Alloy Steel Weld Neck Flanges
Alloy Steel ASTM A182 Long Weld Neck Flanges alloy steel flange material
A182 Weld Neck Flange ASME SA182M Alloy Steel Class 300 Flange
ASTM A182 Alloy Steel RTJ Flanges alloy steel lap joint flange
Alloy Steel A182 BLRF Flanges ASTM A182 WNRF Flanges
Alloy Steel Slip On Flanges Alloy Steel RTJ Flange
ANSI B16.5 Alloy Orifice Flanges Alloy Steel Grade Flat Flange
ASTM A182 Alloy Steel Reducing Flanges A182 Alloy Steel Blind Flanges
ASTM A182 Alloy Steel Pipe Flanges Alloy Steel Industrial Flanges

Check estimated delivery time in different countries

Supply location Port & city name Size & Type
Class 150, Blind flange)
Price in USA $ Estimated delivery days from India
Singapore Port of Singapore 15mm 1.544 8
Malaysia Port Klang (Klang) 20mm 2.265 7
Indonesia Tanjung Priok (Jakarta) 25mm 3.037 7
Saudi Arabia King Abdulaziz Port (Dammam) 32mm 3.267 7
Qatar Hamad Port (Doha) 40mm 4.479 7
Taiwan Port of Kaohsiung (Kaohsiung) 50mm 6.589 15
Cambodia Sihanoukville Autonomous Port (Sihanoukville) 65mm 10.296 9
Vietnam Hai Phong Port (Hai Phong) 80MM 13.127 14
South Korea Busan Port (Busan) 100mm 19.305 7
Malta Malta Freeport (Marsaxlokk) 125mm 23.681 60
Argentina Port of Rosario (Rosario) 150mm 31.660 45
Bangladesh Chittagong Port (Chittagong) 200mm 50.193 14
Japan Port of Yokohama & Tokyo 250mm 84.942 7
Sri Lanka Colombo Port (Colombo) 300mm 120.978 5
Mayanmar Yangon Port (Yangon) 350mm 149.292 25
USA Port of Houston (Houston) 400mm 190.476 40 – 60
UK Port of London (London) 450mm 277.992 30
Thailand Laem Chabang Port (Laem Chabang) 500mm 339.768 7
Maldives Port of Male (Male) 600mm 525.096 7