Flat Flanges Manufacturers

Flat Face Slip on Flange, Carbon Steel Flat Flanges Supplier

Buy Stainless Steel Flat Flanges and Flat Face Lap Joint Flange at lowest price in Mumbai, India

Red Earth Steels PVT LTD is one of the recognized firms that supply and export an extensive range of Flat Face Pipe Flanges, which are welded with filler metal and heat treated as per the specification. These Carbon Steel Flat Face Flanges are threaded in the bore which matches an external thread on the pipe. Alloy Steel Flat Face Flanges is one of the most widely used precipitation hardening grades and possesses good corrosion resistance, toughness, high hardness, and strength. Our Duplex Steel Flat Face Flanges are developed by experts utilizing the advanced techniques and best quality raw material, which is manufactured from top experts of industry.


Flat Flanges


Carbon Steel Flat Flanges manufacturer India

Carbon Steel Flat Flanges
Stainless Steel Flat Flanges manufacturer India

Stainless Steel Flat Flanges
Alloy Steel Flat Flanges manufacturer India

Alloy Steel Flat Flanges

Monel Flat Face Flanges offered by us find application in keeping the big pipes and small pipes together as well as helping in reducing noise as well as vibration at the same time. With the help of our capable employees, we are able to create optimum-grade products like these Hastelloy Flat Face Flanges which are made to ensure the satisfaction of our clients. We always pay attention to the standard of our entire range of Titanium Alloy Flat Face Flanges and offer the same at industry leading prices.


Get suitable Flat Flanges manufacturers in UAE, India, Qatar, Singapore, Dubai, UK, Australia and South Africa.

Save up to 40% on Carbon Steel Flat Flanges. Visit Stainless Steel Flat Flanges manufacturers factory in India, ask for Alloy Steel Flat Flanges free sample.

What is Flat Flanges?

A Flat flange has a gasket surface in the same plane as the bolting circle face. The Applications using flat flanges are frequently those in which the mating flange or flanged fitting is made from a casting. Flat flanges are never to be bolted to a raised face flange. ANSI B16.5 says that when connecting flat face cast iron flanges to carbon steel flanges, the raised face on the carbon steel flange must be removed and that a full face gasket is required.


Flat Flanges Price List

Flat Flanges type Flat Flanges Price in India Flat Flanges Price in USD Flat Flanges Price in UAE Dirham
Stainless Steel Flat Flanges INR 2909.46 / Kg USD $ 41.92 /Kg AED 153.98 UAE Dirham
Carbon steel Flat Flanges INR 3409.87 / Kg USD $ 49.13 /Kg AED 180.46 UAE Dirham
Alloy steel Flat Flanges INR 2445.14 / Kg USD $ 35.23 /Kg AED 129.41 UAE Dirham
ANSI b16 5 Flat Flanges INR 2783.83 / Kg USD $ 40.11 /Kg AED 147.33 UAE Dirham
ASME b16.47 Flat Flanges INR 2288.98 / Kg USD $ 32.98 /Kg AED 121.14 UAE Dirham

Please note this is an approx Price of Flat Flanges in India. For final Flat Flanges price in India please mail us.

Flat Flanges Specification

ASME B16.5 Flat Flanges Size Chart 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Flat Flanges Standards ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Flat Flanges Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Flat Flanges
Flat Flanges Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 Flat Flanges
JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K Flat Flanges
UNI 6Bar 10Bar 16Bar 25Bar 40Bar Flat Flanges
EN 6Bar 10Bar 16Bar 25Bar 40Bar Flat Flanges
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Flat Flanges
Most common types of Flat Flanges Forged / Threaded / Screwed / Plate
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Production technique
  • Forged, Heat treated and machined
Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations

Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Origin Indian / West Europe / Japan / USA / Korean
Manufacturer of

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
Flat Flanges: -BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

  • B.S: BS4504 , BS3293, BS1560, BS10
  • AS 2129: Table D; Table E; Table H
  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • American standard (ANSI)
  • German (DIN)
  • British standard (BS)
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 Flat Flanges
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276
Flat Flanges Uses & application
  • Bitumen upgraders.
  • Heavy oil refineries.
  • Nuclear power (mostly seamless).
  • Petrochemicals and acids.
Export to Ireland, Singapore, Indonesia, Ukraine, Saudi Arabia, Spain, Canada, USA, Brazil, Thailand, Korea, Iran, India, Egypt, Oman, Dubai, Peru, etc
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

Flat Flanges Material

Prestige quality Flat Flanges manufacturers in India offer these Carbon Steel Flat Flanges in DIN, EN, BS, ISO, JIS or ANSI standard.

Carbon Steel Flat Flanges ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80)
Stainless Steel Flat Flanges ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409
Alloy Steel Flat Flanges ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91
Titanium Flat Flanges ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7
ASTM  R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5
Copper Flat Flanges T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc
Copper Nickel Flat Flanges ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Brass Flat Flanges 3602 / 2604 / H59 / H62 / etc.
Inconel Flat Flanges ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 Flat Flanges
Hastelloy Flat Flanges ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flanges
Monel Flat Flanges ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Alloy 20 Flat Flanges ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Aluminium Flat Flanges 5052 /6061/ 6063 / 2017 / 7075 / etc.
Nickel Flat Flanges ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Duplex Flat Flanges S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex Flat Flanges S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Incoloy Flat Flanges ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flanges
254 Smo Flat Flanges ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547
Nimonic Flat Flanges Nimonic 75, Nimonic 80A, Nimonic 90
Other Flat Flanges material Tin bronze, Alumunum bronze, Lead bronze

Red Earth Steels PVT LTD is an ISO certified Stainless Steel Flat Flanges manufacturer & distributor in India

Red Earth Steels PVT LTD is a manufacturer and supplier of Flat Flanges offering in all Ratings up to 2500#, built a distribution network with more then 65 countries globally.

Flat Flanges Dimensions

Flat / Plate Flanges dimensions

ANSI/ASME/ASA B16.5 150lb/sq.in. Flange PlateRF

ø D b g m J k Holes l Kg.
1/2" 88,9 11,1 34,9 30,2 22,3 60,3 4 15,9 0,400
3/4" 98,4 12,7 42,9 38,1 27,7 69,8 4 15,9 0,700
1" 107,9 14,3 50,8 49,2 34,5 79,4 4 15,9 0,800
1 1/4" 117,5 15,9 63,5 58,8 43,2 88,9 4 15,9 1,100
1 1/2" 127,0 17,5 73,0 65,1 49,5 98,4 4 15,9 1,400
2" 152,4 19,0 92,1 77,8 62,0 120,6 4 19,0 2,200
2 1/2" 177,8 22,2 104,8 90,5 74,7 139,7 4 19,0 3,600
3" 190,5 23,8 127,0 107,9 90,7 152,4 4 19,0 4,100
3 1/2" 215,9 23,8 139,7 122,2 103,4 177,8 8 19,0 5,200
4" 228,6 23,8 157,2 134,9 116,1 190,5 8 19,0 5,600
5" 254,0 23,8 185,7 163,6 143,8 215,9 8 22,2 6,300
6" 279,4 25,4 215,9 192,1 170,7 241,3 8 22,2 7,500
8" 342,9 28,6 269,9 246,1 221,5 298,4 8 22,2 12,600
10" 406,4 30,2 323,8 304,8 276,3 361,9 12 25,4 18,500
12" 482,6 31,7 381,0 365,1 327,1 431,8 12 25,5 28,000
14" 533,4 34,9 412,7 400,0 359,1 476,2 12 28,6 36,000
16" 596,9 36,5 469,9 457,2 410,5 539,7 16 28,6 46,000
18" 635,0 39,7 533,4 504,8 461,8 577,8 16 31,7 50,000
20" 698,5 42,9 584,2 558,8 513,1 635,0 20 31,7 64,000
22" 749,3 46,0 641,2 609,6 564,4 692,1 20 34,9 72,000
24" 812,8 47,6 692,1 663,6 615,9 749,3 20 34,9 89,000

 

ANSI/ASME/ASA B16.5 300lb/sq.in. Flange Plate RF

ø D b g m J k Holes l Kg.
1/2" 95,6 14,3 34,9 38,1 22,3 66,7 4 15,9 0,700
3/4" 117,5 15,9 42,9 47,6 27,7 82,5 4 19,0 1,100
1" 123,8 17,5 50,8 54,0 34,5 88,9 4 19,0 1,400
1 1/4" 133,3 19,0 63,5 63,5 43,2 98,4 4 19,0 1,800
1 1/2" 155,6 20,6 73,0 69,8 49,5 114,3 4 22,2 2,600
2" 165,1 22,2 92,1 84,1 62,0 127,0 8 19,0 3,400
2 1/2" 190,5 25,4 104,8 100,0 74,7 149,2 8 22,2 4,400
3" 209,5 28,6 127,0 117,5 90,7 168,3 8 22,2 6,100
3 1/2" 228,6 30,2 139,7 133,3 103,4 184,1 8 22,2 7,500
4" 254,0 31,7 157,2 146,0 116,1 200,0 8 22,2 10,100
5" 279,4 34,9 185,7 177,8 143,8 234,9 8 22,2 12,500
6" 317,5 36,5 215,9 206,4 170,7 269,9 12 22,2 14,100
8" 381,0 41,3 269,9 260,3 221,5 330,2 12 25,4 24,800
10" 444,5 47,6 323,8 320,7 276,3 387,3 16 28,6 37,100
12" 520,7 50,8 381,0 374,6 327,1 450,8 16 31,7 50,000
14" 584,2 54,0 412,7 425,4 359,1 514,3 20 31,7 70,000
16" 647,7 57,1 469,9 482,6 410,5 571,5 20 34,9 90,000
18" 711,2 60,3 533,4 533,4 461,8 628,6 24 34,9 112,000
20" 774,7 63,5 584,2 584,2 513,1 685,8 24 34,9 133,000
22" 838,2 66,7 641,2 641,2 564,4 742,9 24 41,3 197,000
24" 914,4 69,8 692,1 701,7 615,9 812,8 24 41,3 208,000

 

ANSI/ASME/ASA B16.5 600lb/sq.in. FlangePlate RF

ø D b g m J k Holes l Kg.
1/2" 95,2 14,3 34,9 38,1 22,3 66,7 4 15,9 0,800
3/4" 117,5 15,9 42,9 47,6 27,7 82,5 4 19,0 1,400
1" 123,8 17,5 50,8 54,0 34,5 88,9 4 19,0 1,600
1 1/4" 133,3 20,6 63,5 63,5 43,2 98,4 4 19,0 2,100
1 1/2" 155,6 22,2 73,0 69,8 49,5 114,3 4 22,2 3,100
2" 165,1 25,4 92,1 84,1 62,0 127,0 8 19,0 3,700
2 1/2" 190,5 28,6 104,8 100,0 74,7 149,2 8 22,2 5,400
3" 209,5 31,7 127,0 117,5 90,7 168,3 8 22,2 7,300
3 1/2" 228,6 34,9 139,7 133,3 103,4 184,1 8 25,4 8,900
4" 273,0 38,1 157,2 152,4 116,1 215,9 8 25,4 11,800
5" 330,2 44,4 185,7 188,9 143,8 266,7 8 28,6 24,500
6" 355,6 47,6 215,9 222,2 170,7 292,1 12 28,6 29,500
8" 419,1 55,6 269,9 273,0 221,5 349,2 12 31,7 43,000
10" 508,0 63,5 323,8 342,8 276,3 431,8 16 34,9 70,000
12" 558,8 66,7 381,0 400,0 327,1 488,9 20 34,9 86,000
14" 603,2 69,8 412,7 431,8 359,1 527,0 20 38,1 100,000
16" 685,8 76,2 469,9 495,3 410,5 603,2 20 41,3 142,000
18" 742,9 82,5 533,4 546,1 461,8 654,0 20 44,4 175,000
20" 812,8 88,9 584,2 609,6 513,1 723,9 24 44,4 232,000
22" 869,9 95,2 641,2 666,7 564,4 777,9 24 47,6 292,000
24" 939,8 101,6 692,1 717,5 615,9 838,2 24 50,8 330,000

Weight Chart

Nominal Pipe Size Diameter of Pipe Flange I.D No. of holes Flange Dia Thk of Flange Dia of Bolt Circle Dia of Bolt Holes Approx.Weight
DN ISO DIN D5 BN D b K d2 KG/PCS
10 - 14 14.5 4 90 16 60 14 0.7
17.2 - 17.7 4 90 16 60 14 0.69
15 - 20 21 4 95 16 65 14 0.77
21.3 - 22 4 95 16 65 14 0.77
20 - 25 26 4 105 18 75 14 1.06
26.9 - 27.6 4 105 18 75 14 1.05
25 - 30 31 4 115 18 85 14 1.27
33.7 - 34.4 4 115 18 85 14 1.25
32 - 38 39 4 140 18 100 18 1.86
42.4 - 43.1 4 140 18 100 18 1.83
40 - 44.5 45.5 4 150 18 110 18 2.12
48.3 - 49 4 150 18 110 18 2.09
50 - 57 58.1 4 165 20 125 18 2.78
60.3 - 61.1 4 165 20 125 18 2.74
65 76.1 - 77.1 8 185 22 145 18 3.48
80 88.9 - 90.3 8 200 24 160 18 4.33
100 - 108 109.6 8 235 24 190 22 5.82
114.3 - 115.9 8 235 24 190 22 5.61
125 - 133 134.8 8 270 26 220 26 7.91
139.7 - 141.6 8 270 26 220 26 7.6
150 - 159 161.1 8 300 28 250 26 10.12
168.3 - 170.5 8 300 28 250 26 9.58
175 193.7 - 196.1 12 350 32 295 30 14.45
200 219.1 - 221.8 12 375 34 320 30 16.9
250 - 267 270.2 12 450 38 385 33 27.28
273 - 276.2 12 450 38 385 33 26.51
300 323.9 - 327.6 16 515 42 450 33 36.38
350 355.6 - 359.7 16 580 46 510 36 52.83
- 368 372.2 16 580 46 510 36 50.24
400 406.4 - 411 16 660 50 585 39 74.71
- 419 423.7 16 660 50 585 39 71.44
500 508 - 513.6 20 755 52 670 42 86.87
600 610 - 616.5 20 890 54 795 48 121.84
700 711 - 716 24 995 58 900 48 150.93
800 813 - 818 24 1140 64 1030 56 219.08
900 914 - 920 28 1250 70 1140 56 271.16
1000 1016 - 1022 28 1360 78 1250 56 344.95

ASTM Specification of Flat Flanges

  • Carbon Steel Flat Flange
    • A105 Flat Flange

  • Alloy Steel High-Temp Flat Flange
    • A182 Gr F1 Flat Flange
    • A182 Gr F11 Flat Flange
    • A182 Gr F12 Flat Flange
    • A182 Gr F22 Flat Flange
    • A182 Gr F5 Flat Flange
    • A182 Gr F9 Flat Flange

  • Alloy Steel Low-Temp Flat Flange
    • A350 Gr LF2 Flat Flange
    • A350 Gr LF3 Flat Flange

  • Austenitic Stainless Steel Flat Flange
    • A182 Gr F304 Flat Flange
    • A182 Gr F316 Flat Flange
    • A182 Gr F321 Flat Flange
    • A182 Gr F347 Flat Flange
    • A182 Gr F304L Flat Flange
    • A182 Gr F316L Flat Flange
    • A182 Gr F317 Flat Flange
    • A182 Gr F317L Flat Flange
    • A182 Gr F321 Flat Flange
    • A182 Gr F310 Flat Flange
    • A182 Gr 347 Flat Flange

  • Nickel Alloy Flat Flange
    • ASTM B564 Flat Flange
    • astm b564 uns n06600 Flat Flange
    • astm b564 uns n06625 Flat Flange
    • astm b564 uns no4400 Flat Flange
    • astm b564 uns n08810 Flat Flange
    • astm b564 uns n08811 Flat Flange
    • astm b564 uns n08825 Flat Flange
    • astm b564 uns n04400 Flat Flange
    • astm b564 uns n10276 Flat Flange
    • astm b564 uns n10665 Flat Flange

  • Titanium Flat Flange
    • astm b381 grade f2 Flat Flange
    • astm b381 f5 Flat Flange
    • astm b381 f3 Flat Flange
    • astm b381 f12 Flat Flange
    • astm b381 f7 Flat Flange
    • Other grades: ASTM B381 F1, F2, F2H, F3, F4, F5, F6, F7, F7H, F9, F10, F11, F12, F13, F14, F15, F16, F16H, F17, F18, F19, F20, F21, F23, F24, F25, F26 , F26H, F27, F28, F29, F30, F31, F32, F33, F34, F35, F36, F37, F38 Flat Flange

    Manufacturing Stainless Steel Flat Flanges in India, Red Earth Steels PVT LTD holds a wide range of Alloy Steel Flat Flanges in all Thickness, stock for immediate despatch throughout India & globally.

    Type of Flat Flanges we produce:

    Flat Class 150 Flange Flat Threaded Flange
    Flat Class 300 Flange Flat With 1/2 Npt Flange
    Flat Class 1500 Flange Flat With Threaded Hole Flange
    Flat Class 600 Flange Flat Weight 150#  Flange
    Flat Class 900 Flange Flat Rtj 1500 Flange
    Flat Class 2500 Flange Flat Ring Type Joint Flange
    Flat Pn16 Flange Flat Flat Face Flange
    Flat Pn10 Flange Flat Slip On Flange
    Flat Pn40 Flange Flat Rtj 900 Flange
    Flat Pn 160 Flange Flat Rtj Flange
    Flat Pn 64 Flange Flat Npt Flange
    Flat Dn150 Pn16 Flange Flat Jis 5k Flange
    Flat Din 2527 Flange Flat Jis B2220 Flange
    Flat Din En 1092-1 Flange Flat Jis 10k Flange
    Flat Din 2633 Flange Kf Flat Flange
    Flat Din 2576 Flange Flat B16.47 Flange
    Flat Asme B16.5 Class 300 Flange Flat Ansi B16.5 150 Flange

    Supplying Flat Flanges to our worldwide clients:

    Red Earth Steels Pvt Ltd is a Govt. approved certified Carbon Steel Flat Flanges exporter in India. All of our Stainless Steel Flat Flanges are manufactured and tested to international standards, and specifications as per DIN, JIS, EN, ASTM etc. We are well-known as a trusted vendor as a Alloy Steel Flat Flanges distributor & dealer in your country. We have huge stock in Asia, GCC, Gulf, Middle east, UK to supply with over 28 countries, we provide after sales service and fast delivery.


    Stock an extensive range of Flat Flanges, Carbon Steel Flat Flanges manufacturer in Mumbai, India

    Producing high-strength Alloy Steel Flat Flanges in India, contact Stainless Steel Flat Flanges manufacturers in India, Philippines, Malaysia, UAE & UK