Weld Neck Flanges Manufacturer in India

Weld Neck Flanges

Weld Neck Flanges at a Glance

  • Dimensions : 1/2 to 48 inch
  • Class : Class 150 to 2500
  • Face Type : Raised Face, Ring Type Joint, Flat Face
  • MTC : EN 10204 3.1
  • Standards : ASME B16.5, DIN 2630, ASME B16.47, BS 3293
  • Schedule : 20 to 160, XXS, XS

Click Here To Get Lowest Quote For Urgent Requirement Of Weld Neck Flanges



Supplier of WNRF Flange in Mumbai Available in Stainless and Carbon Steel Material

Weld Neck Flanges

Weld Neck Flanges

WNRF Flange

WNRF Flange

Long Weld Neck Flange

Long Weld Neck Flange

Table Of Content


Weld Neck Flanges Specification
Sizes

Weld Neck Flanges Sizes

  • 1/2" to 48"
  • 15 NB - 1200NB






Class

Welded Flanges Class

  • 150 LBS
  • 300 LBS
  • 600 LBS
  • 900 LBS
  • 1500 LBS
  • 2500 LBS


Coating

Coating of Welding Flange

  • Anti-rust Paint
  • Oil Black Paint
  • Zinc Plated
  • Cold and Hot Dip Galvanized
  • Yellow Transparent
  • Zinc Plated
JIS Standard

JIS Standard of WNRTJ Flange

  • 5K
  • 16 K
  • 10 K
  • 30 K
  • 20 K
  • 63 K


UNI

Compact Weld Neck Flanges UNI

  • 6 Bar 
  • 16 Bar 
  • 10 Bar 
  • 40 Bar 
  • 25 Bar 



Bolts Holes

Reducing Weld Neck Flanges Bolts Holes

  • 4 to 24







Test Certificates

Test Certificates of WNRTJ flange

  • MTC EN 10204 3.1/3.2
  • 100% Radiography Test Report
  • Raw Materials Certificate
  • Third Party Inspection Report
Production Technique

Production Technique WN Flange

  • Forged
  • Heat treated







Face Type

Face Type for Flange With Neck

  • Flat Face
  • Male/Female Face
  • Raised face
  • Ring-Joint Face
  • Tongue and Groove Face
  • Lap-Joint Face 

Material

RTJWN Flange Material

  • Stainless Steel
  • Carbon Steel
  • Alloy Steel
  • Duplex and Super Duplex Steel
  • Nickel Alloy Steel





Testing

Testing for Raised Face Weld Neck Flange

  • Direct-reading Spectrograph
  • Magnetic particle detector
  • X-ray detector
  • Hydrostatic testing
  • UItrasonic flaw detector

Applications

Applications of RFWN Flange

  • Acid Tanks
  • Chemical
  • Pulp & paper







Other Dimensional Standards

Other Dimensional Standards of

  • AWWA
  • GOST
  • JIS
  • DIN
  • SABS
  • EN
  • AS2129
Special Made

Special Made of Flat Face Weld Neck Flange

  • up to 60”






Pressure Ratings

Pressure Ratings of Heavy Barrel Weldneck Flanges

  • PN 1 - PN 400



Origin of FFWN Flange

Origin

  • West Europe
  • Korean
  • Indian 
  • USA 
  • Japan 






Equipment of Weld Neck Flange

Equipment of Standard Weldneck Flanges

  • Press Machine
  • Pushing Machine
  • Bending Machine
  • Sand-blasting Machine
  • Electric Bevelling Machine
WNRF Flange Threads Types

Threads Types

  • MNPT
  • MPT/ BSPT
  • BSPP, BSP
  • NPT,FPT







Aesteiron Recent Export Orders

UAE
Supplied Stock Of Weld Neck Flanges to UAE

Supplied Stock Of Weld Neck Flanges to UAE

Australia
Exported Welded Flanges to Saudi Arabia

Exported Welded Flanges to Saudi Arabia

Click Here For Custom Sizes

Ready Stock of Welding Flange Sizes Up to 48 inch According To ANSI / ASME B16.5

Weld Neck Flange Dimension

Size in mm 15 20 25 32 40 50 65 80 90 100 125 150 200 250 300 350 400 450 500 600
Size in Inch 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4 5 6 8 10 12 14 16 18 20 24
OD A 90 100 110 115 125 150 180 190 215 230 255 280 345 405 485 535 595 635 700 815
Hub OD C 30 38 49 59 65 78 90 108 122 135 164 192 246 305 365 400 457 505 559 663
Flange Thickness B 9.6 11.2 12.7 14.3 15.9 17.5 20.7 22.3 22.3 22.3 22.3 23.9 27 28.6 30.2 33.4 35 38.1 41.3 46.1
PCD I 60.3 69.9 79.4 88.9 98.4 120.7 139.7 152.4 177.8 190.5 215.9 241.3 298.5 362 431.8 476.3 539.8 577.9 635 749.3
Weld Neck OD D 21.3 26.7 33.4 42.2 48.3 60.3 73 88.9 101.6 114.3 141.3 168.3 219.1 273 323.8 355.6 406.4 457.2 508 610
RF Diameter G 34.9 42.9 50.8 63.5 73 92.1 104.8 127 139.7 157.2 185.7 215.9 269.9 323.8 381 412.8 469.9 533.4 584.2 692.2
Welding Neck Length E 46 51 54 56 60 62 68 68 70 75 87 87 100 100 113 125 125 138 143 151
RF Height H 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Weld Face J 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6

View Long Weld Neck Flange Weight Chart

NPS 150# 300# 600# 900# 1500#
½ 2 2 3 7 7
¾ 2 3 4 7 7
1 3 4 4 8.5 9
1¼ 3 5 6 10 10
1½ 4 7 8 14 14
2 6 9 12 24 25
2½ 10 12 18 31 36
3 11.5 18 23 36 48
3½ 12 20 26 53 73
4 16.5 26.5 42 86 132
5 21 36 68 110 165
6 26 45 81 187 275
8 42 69 120 268 455
10 54 100 190 372 690
12 88 142 226 562 940
14 114 206 347 685 1250
16 140 250 481 924 1625
18 165 320 555 1164 2050
20 197 400 690 2107 3325
Manufacturer of Welded Flanges Produce in RTJ, RF and FF Type
Welded Flanges Face Types

For High Pressure Applications Buy Alloy Steel RTJLWN Flange At Factory Price
  • High-pressure systems
  • Handling volatile and hazardous fluids
  • Wide temperature
  • Pressure fluctuations
  • Working in very cold conditions
  • High temperature environments
  • Oil and gas pipeline
  • Water supply systems
  • Fabrication industry
  • Paper & pulp industry
  • Food processing industry

Weld neck flanges Manufacturer in India stocks in schedule 40 and 80 in class 150# as per ASME B16.5 standards

FFWN Flange Material & Grades


Advantages of Long Welding Neck Flange
  • Durability
  • High Strength
  • Reduces stress concentration
  • Versatility for various applications
  • Best option for long-term performance
  • Smooth stress distribution
Advantages of Long Welding Neck Flange
Ready Stock of Weld Neck Flanges
Size Standard Grade Face Type Class
1/2 to 24 inch ANSI B16.5
  • ASTM A105N
  • ASTM A694
  • ASTM A350 LF2
 RF, RTJ and FF   150 to 2500 lbs
26 to 48 inch ANSI B16.47
  • ASTM A350 LF2 
  • ASTM A105N
  • ASTM A694
 RF, RTJ and FF 150 to 600 lbs
1/2 to 12 inch BS EN1092
  •  ASTM A105N
  • BS.EN 10025 S235JR
 RF, RTJ and FF
  • PN6
  • PN 10
  • PN16
  • PN 25
  • PN40
1/2 to 12 inch ANSI B16.11
  • ASTM A182 F51
  • ASTM A182 F55
   -
1/2 to 36 inch BS10 2010ed
  • ASTM A350 LF2 
  • ASTM A105N
  • ASTM A694
 RF and RTJ -

Get free delivery and fast quotes directly from weld neck flanges supplier in India, Call now for flat face, raised face,or RTJ facing of WNRF flange

Things to consider when selecting the right Long Neck Flange
Advantages of Long Welding Neck Flange
Pressure Class of LWNFF Flange
Pressure Class Material Standard
PN 6
  • 304L / 1.4307
  • 316L / 1.4404, 1.4435
  • 304 / 1.4301
  • 2205 / 1.4462
  • 321 / 1.4541
  • 316Ti / 1.4571
  •  DIN 2631
  • EN 1092-1 type 11
PN 10
  • 304L / 1.4307
  • 316L / 1.4404 , 1.4435
  • 304 / 1.4301
  • 321 / 1.4541
  • 316Ti / 1.4571
  • DIN 2632
  • EN 1092-1 type 11
PN 16
  • 304L / 1.4307
  • 316L / 1.4404, 1.4435
  • 304 / 1.4301
  • 2205 / 1.4462
  • 321 / 1.4541
  • 316Ti / 1.4571
  • DIN 2633
  • EN 1092-1 type 11
PN 25
  • 304 / 1.4301
  • 304L / 1.4307
  • 316L / 1.4404, 1.4435
  • 904L / 1.4539
  • 321 / 1.4541
  • 316Ti / 1.4571
  • DIN 2634
  • EN 1092-1 type 11
PN 40
  • 304 / 1.4301
  • 304L / 1.4307
  • 316L / 1.4404, 1.4435
  • 321 / 1.4541
  • 316Ti / 1.4571
  • DIN 2635/C
  • EN 1092-1 type 11
More Pressure Range PN 63/67, PN 100, PN 160, PN 250, PN 320, PN 400
Two-piece or Pressure Flange 304L, 316L, 321, 316Ti
Manufacturing Standards of RFLWN Flange
DIN 2628, 2627, 2631, 2629, 2633, 2635, 2638 
Other Standard GOST 12820, EN1092-1, KS B1503, JIS B2220, AWWA C207, UNI2276, NFE 29203, SAB S1123
Class 300 Dimensions of Weld Neck Ring Joint Flange
Dimensions of Weld Neck Ring Joint Flange

Size in mm 15 40 65 90 125 200 300 400 500 600
Size in Inch 1/4 1 1/2 2 1/2 3 1/2 5 8 12 16 20 24
OD A 90 125 180 215 255 345 485 595 700 815
Hub OD C 30 65 90 122 164 246 365 457 559 663
Weld Face J 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6
Flange Thickness B 9.6 15.9 20.7 22.3 22.3 27 30.2 35 41.3 46.1
Weld Neck OD D 21.3 48.3 73 101.6 141.3 219.1 323.8 406.4 508 610
RF Diameter G 34.9 73 104.8 139.7 185.7 269.9 381 469.9 584.2 692.2
Welding Neck Length E 46 60 68 70 87 100 113 125 143 151
RF Height H 2 2 2 2 2 2 2 2 2 2
PCD I 60.3 98.4 139.7 177.8 215.9 298.5 431.8 539.8 635 749.3
Class 600 Dimensions of FFLWN Flange
Size in mm   15 25 50 90 125 150 300 350 450 600
Size in Inch   1/2 1 2 3 1/2 5 6 12 14 18 24
OD A 95 125 165 230 330 355 560 605 745 940
Weld Neck OD D 21.3 33.4 60.3 101.6 141.3 168.3 323.8 355.6 457 610
PCD I 66.7 88.9 127 184.2 266.7 292.1 489 527 654 838.2
Flange Thickness B 14.3 17.5 25.4 35 44.5 47.7 66.7 69.9 82.6 101.6
Hub OD C 38 54 84 133 189 222 400 432 546 718
RF Diameter G 34.9 50.8 92.1 139.7 185.7 215.9 381 412.8 533.4 692.2
Welding Neck Length E 52 62 73 86 114 117 156 165 184 203
Weld Face J 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6
RF Height H 7 7 7 7 7 7 7 7 7 7
Class 1500 Dimensions of Weld Neck Flange Raised Face
mm 15 25 50 100 200 350 450 600
Inch 1/2 1 2 4 8 14 18 24
OD A 120 150 215 310 485 750 915 1170
Flange Thickness B 22.3 28.6 38.1 54 92.1 133.4 162 203.2
Weld Face J 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6
Hub OD C 38 52 105 162 292 495 597 762
Welding Neck Length E 60 73 102 124 213 298 327 406
Weld Neck OD D 21.3 33.4 60.3 114.3 219.1 355.6 457 610
Bore F Refer Note              
PCD I 82.6 101.6 165.1 241.3 393.7 635 774.7 990.6
RF Diameter G 34.9 50.8 92.1 157.2 269.9 412.8 533.4 692.2
RF Height H 7 7 7 7 7 7 7 7
HSN Code of LWNRTJ Flange
Description HSN Code
Weld neck flange hs code 73072100
Weld Neck Flange Bolt Chart
NPS ½ 1 1 ½ 2 ½ 3 ½ 5 8 14 18 22 26 36 42 48
10 .674 1.097 1.682 2.635 3.76 5.295 8.329 13.5 17.5 21.5   35.376    
20             8.125 13.376 17.376     35    
30             8.071 13.25 17.124     34.75    
40 .622 1.049 1.61 2.469 3.548 5.047 7.981 13.124 16.876     34.5    
60             7.813 12.812 16.5          
80 .546 .957 1.5 2.323 3.364 4.813 7.625 12.5 16.124          
100             7.437 12.124 15.688          
120           4.563 7.187 11.812 15.25          
140             7.001 11.5 14.876          
160 .464 .815 1.338 2.125   4.313 6.813 11.188 14.438          
WNRF Flange Bore Chart
NPS
150#		 300#
# Bolts or Studs Length of Stud Dia of Bolts or Studs # Bolts or Studs Length of Stud Dia of Bolts or Studs
1/16 RF RTJ 1/16 RF RTJ
1/2 4 2-1/4 .50 – 4 2-1/2 .50 3
1 4 2-1/2 .50 3 4 3 .63 3-1/2
1-1/2 4 2-3/4 .50 3-1/4 4 3-1/2 .75 4
2-1/2 4 3-1/2 .63 4 8 4 .75 4-1/2
3-1/2 8 3-1/2 .63 4 8 4-1/4 .75 5
4 8 3-1/2 .63 4 8 4-1/2 .75 5
6 8 4 .75 4-1/2 12 4-3/4 .75 5-1/2
10 12 4-1/2 .88 5 16 6-1/4 1.00 6-3/4
14 12 5-1/4 1.00 5-3/4 20 7 1.13 7-1/2
18 16 5-3/4 1.13 6-1/4 24 7-3/4 1.25 8-1/4
24 20 6-3/4 1.25 7-1/4 24 9 1.50 10
Welding Method Used For Weld Neck Flanges 
Description
Gas Metal Arc Welding
Gas Tungsten Arc Welding
Shielded Metal Arc Welding
ANSI B16.5 Weld Neck Flange Tolerances
Flange Tolerance
OD
  • OD < 24" : ±1/16"
  • OD > 24": ±1/8"
Diameter of hub at point of welding
  • < 5": +3/32", -1/32"
  • > 6" : +5/32", -1/32
ID
  • 10" and less : ±1/32"
  • 12 to 18": +1/8"
  • > 20" : -1/16"
Drilling
  • Bolt hole spacing: ±1/32"
  • Bolt circle: ±1/16"
Length of hub
  • < 10" : ±1/16"
  • > 12" : ±1/8"
Diameter of contact face
  • 1/16" RF : ±1/32"
  • 1/4" RF, T& G : ±1/64"
International Standards of WN Flange
South Korean and China France Malaysia Canada
  • GB/T 9112 / 9119
  • KS B1503
  • NF E 29-203
  • NF E 29-200
  • MS 253
  • MS 816
  • MS 816
  • MS 253
  • ANSI B16.47 Series A & B
  • CSA B16.5
Australia & UK Russia Europe Italy
  • BS 10
  • Ghost
  • BS EN 1092-1
  • BS EN 1092-2
  • BS EN 1092-3
  • UNI 6091
  • UNI 2276
USA Germany Europe Japan
  • AWWA
  • ANSI B16.5
  • ANSI B16.47 (API 605)
  • AWWA C207
  • ASME B16.5 weld neck flange
  • ANSI B16.36
  • ANSI B16.48
  • MSS SP44
  • CL 125 (Light weight)
  • API 605
  • ASA
  • DIN 2628
  • PN 10 to 400
  • ISO 7005
  • BS EN 1759
  • JIS B2220
Height of Weld Neck Flanges
Class Of RFWN Flange 150 # 300 # 400 # 600 # 900 # 1500 # 2500 #
Height in inch 1/6 1/6 1/4 1/4 1/4 1/4 1/4
Nominal diameter DN < 40 [mm] DN 50 to 250 [mm] DN 300 to 500 [mm] DN 500 to 2000 [mm]
Sealing face height 2 3 4 5
Temperature / Pressure Calssification For PN 10 Welding Neck Flange
Material RT 100 °C 150 °C 200 °C 250 °C 300 °C 350 °C 400 °C 450 °C 500 °C 550 °C 560 °C 570 °C 580 °C 590 °C 600 °C
1.4541 321 10 bar 9,9 9,3 8,8 8,4 7,9 7,6 7,4 7,2 7,0 6,7* 6,1* 5,6* 5,0* 4,5* 4,0* bar
1.4307 304L 8,6 7,7 7,0 6,5 6,0 5,7 5,5 5,3 5,1 4,3* 4,0* 3,7* 3,4* 3,0* 2,8* bar
1.4571 316Ti 10,0 9,8 9,3 8,8 8,3 8,0 7,8 7,6 7,5 7,4 7,4 7,3* 6,7* 6,0* 5,5* bar
1.4462 2205 10,0 bar 10,0 bar 10,0 bar 10,0 bar                      
1.4404 316L 9,4 8,6 7,9 7,4 6,9 6,6 6,4 6,2 6,0 bar            

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Why Aesteiron?

  • Distributor of USA, Japan and European Mills for Seamless Pipes and Steel Plates
  • Only Indian Company who has Weekly 3 Shipment to Saudi Arabia, Netherlands and USA
  • Vast experience as an Exporter of Industrial Long and Flat Products in India
  • Keep Ex-Stock of Nickel Alloys Make Special Metals, USA
  • Supply Europe, USA, Japan and Korea Origin Material
  • Local Distributor in Houston (USA)
  • 350+ Clients in Atlanta, California, Wisconsin, Texas, Kansas, Indiana, Florida
  • Get Price, availability, and shipping information Via WhatsApp and Email in Maximum 2 Hrs
  • DFARS compliant Pipe, Fittings and Sheets for oil and gas companies
  • Weekly Delivery in Tanzania, Sharjah, Dubai, Qatar and Cape Town
  • Special Price for Steel Suppliers, Wholesalers, Importer, Stockholder, Traders and Stockist in USA
  • Known for Best quality of Steel Fittings, Flanges and Pipes
  • Offer MTC 3.1/3.2 and Third Party Inspection at Lowest Price
  • Specialized in supplying Large Diameter Steel Pipes with wear-resistant coating
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Project Reference

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Conclusion

Weld Neck Flanges Available in Various Material, Specification and Sizes At Factory Price and Dispatch in Same Day

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