• sales@shikharsteel.com

Stainless Steel Weld Neck Flanges

Sizes in Stock

Sizes in Stock

1/2" to 24"

Sizes Can Be Manufacture

Sizes Can Be
Manufacture

Up to DN1600

Test

Test

Tensile Testing

Process

Process

Cutting, Rolling

Application

Application

Oil & Gas Pipe Line

German Standard

German Standard

DIN 2633

Connection Types

Connection Types

Welding

Best For

Best For

High Temperature Environments


Weld Neck Flanges Overview

Table Of Content

Since 2014, Stainless Steel WNRF Flange Manufacturer in India


Weld Neck Flanges Specification


Manufacturing Size Range

WNRF Flange Manufacturing Sizes

  • ½" to 24"
  • DN15 to DN1500
  • PN 2.5 to PN 400

Pressure Class

Pressure Class for Welding Flange

  • Class 125, Class 150
  • Class 300, Class 400
  • Class 600, Class 900
  • Class 1500, Class 2500
Faces

Long Weld Neck Flange Faces

  • Ring Type Joint (RTJ)
  • Flat Face (FF)
  • Raised Face (RF)
  • T&G & M&F Face
American Standard

American Standard of WN Flange

  • ASME B16.5
  • ASME B16.47
  • ASME B16.36
  • ASME B16.48
Manufacturing Process

Raised Face Weld Neck Flange Manufacturing Process

  • Forging
  • Plate
  • and Cast
Thickness

Thickness for Flange Long Welding Neck

  • Schedule 10/ 20/ 40
  • Schedule 60/ 80/ 120
  • Schedule 140/ 160/ 180
Process

Stainless Steel Weld Neck Flange Process

  • Forged and Drilling
  • Stamping and Milling
  • Turning and Rolled
Threads

Threads of Reducing Weld Neck Flange

  • BSP/ FPT/ NPT
  • BSPT/ MPT (Female)
  • BSPP (Male) & MNPT (Male)
Surface Finish

RFWN Flange Surface Finish

  • Stock & Mirror Finish
  • Smooth & Serrated Finish
  • Cold Water Finish
Bolts Hole

Bolts Hole for WeldNeck Flange

  • 4 To 8
  • 4 To 24
  • 4 To 48
Application

Flat Face Weld Neck Flange Application

  • Power Generation
  • Gas Processing
  • Sea Water Equipment
Packaging

Packaging of Carbon Steel Weld Neck Flange

  • Carton Box
  • Wooden Case
  • Plastic Bag (Custom)
Suitable Environment

Orifice Weld Neck Flange Suitable Environment

  • Sulfuric Acid
  • Phosphoric Acid
  • Seawater
Testing

Testing & Inspection of Flange With Neck

  • Tensile Test
  • Impact Test
  • Material Inspection
Connection

Heavy Barrel Long Weld Neck Flange Connection

  • Welding
  • Threaded
European Standard

European Standard of Long Neck Flange

  • EN 1092-1
  • EN 1092-2
Logistics

Straight Hub Welding Flanges Logistics

  • By Sea & Air
  • UAE = 7 day
  • Saudi Arabia = 8 day
  • Qatar = 7 day
Origin

Origin for Weld Neck Ring Joint Flange

  • Janpanese
  • American
  • Korean
  • European
German Standard

Weld Neck Pipe Flange German Standard

  • DIN 2501/ 2573
  • DIN 2502/ 2576
  • DIN 2543/ 2633
Japanese Standard

Japanese Standard of Well Neck Flange

  • JIS B2311
  • JIS B2312
  • JIS B2220

Recent Export By Shikhar Steel


Project in Venezuela
  • 20 Inch, ASME B16.5 Weld Neck Flange
  • PDVSA
  • Maracaibo, Venezuela
Project in United Arab Emirates
  • 26 Inch, Long Neck Flange
  • Abu Dhabi National Oil Company
  • Abu Dhabi, United Arab Emirates

Produce Carbon Steel Weld Neck Flange in Class 150 and 2500 Pressure Ratings


Stainless Steel Weld Neck Flanges Pressure Ratings


Temperature (°F) Pressure Rating
400 300 1500 600 150 900 2500
900 525 395 1970 790 50 1180 3280
800 555 415 2075 830 80 1245 3460
700 575 430 2160 865 110 1295 3600
600 600 450 2255 905 140 1355 3760
500 635 480 2390 955 170 1435 3980
400 685 515 2570 1030 195 1540 4280
300 745 560 2795 1120 215 1680 4660
200 825 620 3095 1240 240 1860 5160
-20 to 100 960 720 3600 1440 275 2160 6000


Welding Procedure for ASME B16.5 Weld Neck Flange


  • MIG (Metal Inert Gas) Welding
  • TIG (Tungsten Inert Gas) Welding
  • Arc Welding


Weld Neck Flange Bolt Chart


Nominal Sizes (Inch) Bolt Holes No. Diameter Stud Bolts Len Stud Bolts
20 20 1.1/8 6.25
18 16 1.1/8 5.75
16 16 1 5.25
14 12 1 5.25
12 12 7/8 4.75
10 12 7/8 4.5
8 8 3/4 4.25
6 8 3/4 4
5 8 3/4 3.75
4 8 5/8 3.5
3.1/2 8 5/8 3.5
3 4 5/8 3.5
2.1/2 4 5/8 3.5
2 4 5/8 3.25
1.1/2 4 1/2 2.75
1.1/4 4 1/2 2.75
1 4 1/2 2.5
3/4 4 1/2 2.5
1/2 4 1/2 2.25


Refer Top Advantages and Dimensions of Raised Face Weld Neck Flange as per ASME B16.5



Check The Advantages of Long Weld Neck Flange


  • Lower maintenance
  • Excellence Resistance to Corrosive
  • Higher Tensile Strength
    • >

Class 150 Weld Neck Flange Dimensions


Class 150 Weld Neck Flange Dimensions

Nominal Sizes (Inch) Inside Diameter (I.D.) Outside Diameter (O.D.) Bolt Circle Raised Face H H1 Raised Face
Thick.		 T1 Flat Face
Thick.
20 19.25 27.50 25 23 22 20 5.69 1.63 5.63
18 17.25 25 22.75 21 19.88 18 5.50 1.50 5.44
16 15.25 23.50 21.25 18.50 18 16 5 1.38 4.94
12 12 19 17 15 14.38 12.75 4.50 1.19 4.44
8 7.98 13.50 11.75 10.62 9.69 8.63 4 1.06 3.94
6 6.07 11 9.50 8.50 7.56 6.63 3.50 .94 3.44
4 4.03 9 7.50 6.19 5.31 4.50 3 .88 2.94
3 3.07 7.50 6 5 4.25 3.50 2.75 .88 2.69
2 2.07 6 4.75 3.62 3.06 2.38 2.50 .69 2.44
1 1.05 4.25 3.12 2 1.94 1.32 2.19 .50 2.13
1/2 0.62 3.50 2.38 1.38 1.19 0.84 1.88 .38 1.82


Class 300 Weld Neck Flange Dimensions


Class 300 Weld Neck Flange Dimensions

Nominal Size (Inch) Outside Diameter (O.D.) Radius of Fillet Wall Thck. Hub at Base Raised Face Hub at Bevel Depth of Socket
O r Q X R H Z
20 30-1/2 1/2 2-1/2 23-1/8 23 20.00 -
18 28 1/2 2-3/8 21 21 18.00 -
16 25-1/2 1/2 2-1/4 19 18-1/2 16.00 -
14 23 1/2 2-1/8 16-3/4 16-1/4 14.00 -
12 20-1/2 1/2 2 14-3/4 15 12.75 -
10 17-1/2 1/2 1-7/8 12-5/8 12-3/4 10.75 -
8 15 1/2 1-5/8 10-1/4 10-5/8 8.63 -
6 12-1/2 1/2 1-7/16 8-1/8 8-1/2 6.63 -
5 11 7/16 1-3/8 7 7-5/16 5.56 -
4 10 7/16 1-1/4 5-3/5 6-3/16 4.50 15/16
3-1/2 9 3/8 1-3/16 5-1/4 5-1/2 4.00 7/8
3 8-1/4 3/8 1-1/8 4-5/8 5 3.50 13/16
2-1/2 7-1/2 5/16 1 3-15/16 4-1/8 2.88 3/4
2 6-1/2 5/16 7/8 3-5/16 3-5/8 2.38 11/16
1-1/2 6-1/8 1/4 13/16 2-3/4 2-7/8 1.90 5/8
1-1/4 5-1/4 3/16 3/4 2-1/2 2-1/2 1.66 9/16
1 4-7/8 1/8 11/16 2-1/8 2 1.32 1/2
3/4 4-5/8 1/8 5/8 1-7/8 1-11/16 1.05 7/16
1/2 3-3/4 1/8 9/16 1-1/2 1-3/8 .84 3/8


Class 600 Weld Neck Flange Dimensions


Class 600 Weld Neck Flange Dimensions

Nominal Size Outside Diameter (O) Length Thru Hub (Y) Thck. (T) Hub Dia. (X) Bolt Circle (C) Dia. of Holes Raised Face Dia. (R) Point of Weld (A) Approx. Weight (lbs)
20 32 7.50 3.50 24 28.50 1.75 23 20 590
18 29.25 7.25 3.25 21.50 25.75 1.75 21 18 475
16 27 7 3 19.50 23.75 1.63 18.50 16 390
14 23.75 6.50 2.75 17 20.75 1.50 16.25 14 280
12 22 6.13 2.63 15.75 19.25 1.38 15 12.75 225
10 20 6 2.50 13.50 17 1.38 12.75 10.75 190
8 16.50 5.25 2.19 10.75 13.75 1.25 10.63 8.63 120
6 14 4.63 1.88 8.75 11.50 1.13 8.50 6.63 81
5 13 4.50 1.75 7.44 10.50 1.13 7.31 5.56 68
4 10.75 4 1.50 6 8.50 1 6.19 4.50 42
3 1/2 9 3.38 1.38 5.25 7.25 1 5.50 4 26
3 8.25 3.25 1.25 4.63 6.63 0.88 5 3.50 23
2 1/2 7.50 3.13 1.13 3.94 5.88 0.88 4.13 2.88 18
2 6.50 2.88 1 3.31 5 0.75 3.63 2.38 12
1 1/2 6.13 2.75 0.88 2.75 4.50 0.88 2.88 1.90 8
1 1/4 5.25 2.63 0.81 2.50 3.88 0.75 2.50 1.66 6
1 4.88 2.44 0.69 2.13 3.50 0.75 2 1.32 4
3/4 4.63 2.25 0.63 1.88 3.25 0.75 1.69 1.05 4
1/2 3.75 2.06 0.56 1.50 2.63 0.63 1.38 0.84 2

Class 900 Weld Neck Flange Dimensions


Class 900 Weld Neck Flange Dimensions

Nominal Pipe Size Outside Diameter (O.D.) (O) Length Thru Hub (Y) Thck. (T) Approx. Weight (lbs) No. of Holes Raised Face Dia. (R) Hub Dia. (X) Bolt Circle (C) Dia. of Holes
20 33.75 9.75 4.25 830 20 23 24.50 29.50 2.13
18 31 9 4 680 20 21 22.25 27 2
16 27.75 8.50 3.50 495 20 18.50 20 24.25 1.75
14 25.25 8.38 3.38 400 20 16.25 17.75 22 1.63
12 24 7.88 3.13 325 20 15 16.50 21 1.50
10 21.50 7.25 2.75 260 16 12.75 14.50 18.50 1.50
8 18.50 6.38 2.50 175 12 10.63 11.75 15.50 1.50
6 15 5.50 2.19 110 12 8.50 9.25 12.50 1.25
5 13.75 5 2 86 8 7.31 7.50 11 1.38
4 11.50 4.50 1.75 53 8 6.19 6.25 9.25 1.25
3 9.50 4 1.50 31 8 5 5 7.50 1
2 1/2 9.63 4.06 1.63 36 8 4.13 4.88 7.50 1.13
2 8.50 4 1.50 25 8 3.63 4.13 6.50 1
1 1/2 7 3.25 1.25 13 4 2.88 2.75 4.88 1.13
1 1/4 6.25 2.88 1.13 10 4 2.50 2.50 4.38 1
1 5.88 2.88 1.13 9 4 2 2.06 4 1

Class 1500 Weld Neck Flange Dimensions


Class 1500 Weld Neck Flange Dimensions

Nominal Sizes (Inch) Outside Diameter (O) Length Thru Hub (Y) Thickness (T) Bolt Circle (C) Hub Diameter (X) Raised Face Diameter (R) Point of Weld (A) Approx. Weight (lbs)
20 38.75 14 7 32.75 25.25 23 20 2050
18 36 12.88 6.38 30.50 23.50 21 18 1625
16 32.50 12.25 5.75 27.75 21.75 18.50 16 1250
14 29.50 11.75 5.25 25 19.50 16.25 14 940
12 26.50 11.13 4.88 22.50 17.75 15 12.75 690
10 23 10 4.25 19 14.50 12.75 10.75 455
6 15.50 6.75 3.25 12.50 9 8.50 6.63 165
4 12.25 4.88 2.13 9.50 6.38 6.19 4.50 73
3 10.50 4.63 1.88 8 5.25 5 3.50 48
2 1/2 9.63 4.06 1.63 7.50 4.88 4.13 2.88 36
2 8.50 4 1.50 6.50 4.13 3.63 2.38 25
1 1/4 6.25 2.88 1.13 4.38 2.50 2.50 1.66 10
1 5.88 2.88 1.13 4 2.06 2 1.32 9
3/4 5.13 2.75 1 3.50 1.75 1.69 1.05 6

Class 2500 Weld Neck Flange Dimensions


Class 2500 Weld Neck Flange Dimensions

Nominal Size Outside Diameter (O) Dia. of Holes Thickness (T) Length Thru Hub (Y) Bolt Circle (C) Raised Face Dia. (R) Point of Weld (A) Approx. Weight (lbs)
12 30 2.88 7.25 18.25 24.38 15 12.75 1525
10 26.50 2.63 6.50 16.50 21.25 12.75 10.75 1075
8 21.75 2.13 5 12.50 17.25 10.63 8.63 580
6 19 2.13 4.25 10.75 14.50 8.50 6.63 380
5 16.50 1.88 3.63 9 12.75 7.31 5.56 245
4 14 1.63 3 7.50 10.75 6.19 4.50 145
3 12 1.38 2.63 6.63 9 5 3.50 94
2 9.25 1.13 2 5 6.75 3.63 2.38 42
1 1/2 8 1.25 1.75 4.38 5.75 2.88 1.90 25
1 6.25 1 1.38 3.50 4.25 2 1.32 12
3/4 5.50 0.88 1.25 3.13 3.75 1.69 1.05 8


Purchase Long Weld Neck Flange in DIN, BS and JIS Standard at Best Price in Mumbai

Long Weld Neck Flange Dimensions Class 150


Long Weld Neck Flange Dimensions Class 150

Nominal Size Outer Diameter Thickness Weld Neck Outside Diameter Hub Outside Diameter RF Dia. PCD RF Stud Length
mm Inch A B D C E G
400 16 595 35 406.4 457 469.9 539.8 135
15 1/2 90 9.6 21.3 30 34.9 60.3 55
125 5 255 22.3 141.3 164 185.7 215.9 95
40 1 1/2 125 15.9 48.3 65 73 98.4 70
65 2 1/2 180 20.7 73 90 104.8 139.7 90
90 3 1/2 215 22.3 101.6 122 139.7 177.8 90
200 8 345 27 219.1 246 269.9 298.5 110
300 12 485 30.2 323.8 365 381 431.8 120
500 20 700 41.3 508 559 584.2 635 160
20 3/4 100 11.2 26.7 38 42.9 69.9 65
32 1 1/4 115 14.3 42.2 59 63.5 88.9 70
50 2 150 17.5 60.3 78 92.1 120.7 85
80 3 190 22.3 88.9 108 127 152.4 90
100 4 230 22.3 114.3 135 157.2 190.5 90
150 6 280 23.9 168.3 192 215.9 241.3 100
250 10 405 28.6 273 305 323.8 362 115
350 14 535 33.4 355.6 400 412.8 476.3 135
450 18 635 38.1 457.2 505 533.4 577.9 145


DIN Standard Of ASME B16.5 Weld Neck Flange


  • DIN 2633
  • DIN 2503
  • DIN 2634
  • DIN 2636
  • DIN 2638
  • DIN 2629
  • DIN 86057
  • DIN 2632
  • DIN 2635
  • DIN 2630
  • DIN 2636
  • DIN 2638


Flat Face Weld Neck Flange BS Standard


Classes Standards
Class 150 BS 3293
Class 300 BS 3293
Class 400 BS 3293
Class 600 BS 3293


JIS Standard Of Carbon Steel Weld Neck Flange


  • JIS B2311
  • JIS B2313
  • KS B1541
  • JIS B2220
  • JIS B2312
  • KS B1522

WNRF Flange UNI Standards


  • UNI 2281-67
  • UNI 2283-67
  • UNI 2286-67
  • UNI 2284-67
  • UNI 2285-67
  • UNI 2282-67


Stainless Steel Weld Neck Flanges Price


  • Grade = SS304
  • Class = 150#
  • Face Type = Raised Face (RF)


Nominal Size (Inch) Price in USD
0.5 $ 50.26
0.75 $ 55.19
1 $ 65.66
1.5 $ 90.22
2.5 $ 160.51
4 $ 245.89
6 $ 429.16
10 $ 1,000.86
12 $ 1,439.98

Carbon Steel Weld Neck Flange Price


  • Grade = A105
  • Class = 150#
  • Face Type = Raised Face (RF)


Nominal Size (Inch) Price in USD
0.5 $ 70.22
0.75 $ 72.22
1 $ 75.22
1.5 $ 77.58
2.5 $ 80.26
4 $ 130.88
6 $ 200.68
10 $ 640.39
12 $ 450.37


Check Welding Flange Gasket and Weight Chart in PN10/PN16 for Petrochemicals


Flange Long Welding Neck Gaskets


Flange Long Welding Neck Gaskets


PN10 Weld Neck Flange Weight


PN 10 Weight in Kg Diameter Nominal
11.6 200
7.81 150
6.30 125
4.62 100
3.92 80
3.03 65
2.53 50
2.15 40
1.91 32
1.30 25
1.09 20
0.768 15
0.678 10


PN16 Weld Neck Flange Weight


PN 16 Weight in Kg Diameter Nominal
11.5 200
7.81 150
6.30 125
4.62 100
3.92 80
3.03 65
2.53 50
2.15 40
1.91 32
1.30 25
1.09 20
0.768 15
0.678 10

Types Of Stainless Steel Weld Neck Flanges


Long Weld Neck Flange

Long Weld Neck Flange

Welding Flange

Welding Flange

Raised Face Weld Neck Flange

Raised Face Weld Neck Flange


Reducing Weld Neck Flange

Reducing Weld Neck Flange

Flat Face Weld Neck Flange

Flat Face Weld Neck Flange

Orifice Weld Neck Flange

Orifice Weld Neck Flange


Flange With Neck

Flange With Neck

Heavy Barrel Long Weld Neck Flange

Heavy Barrel Long Weld Neck Flange

Straight Hub Welding Flanges

Straight Hub Welding Flanges


Weld Neck Ring Joint Flange

Weld Neck Ring Joint Flange

Well Neck Flange

Well Neck Flange

Welding Neck Flange

Welding Neck Flange



RFWN Flange Applications


  • Petrochemicals
  • Power Generation
  • Heat Exchanger
  • Gas Processing
  • Sea Water Equipment
  • Piping Systems
  • Pulp and Paper Industry
  • Special Chemical
  • Pharmaceutical Equipment


Types

Material

Top 12 Advantages to Choose Shikhar Steel

Top 12 Advantages to Choose Shikhar Steel

  • NACE Certified Metal Forging Company in India Having Factory of 5,850 Square Feet in Mumbai.

  • Since 2014, PED Approved Fittings Manufacturer as per ANSI B16.9.

  • Indian Oil Approved High Temperature Pipe Fittings Supplier in UAE, Russia, Qatar, Brazil, Oman and Spain.

  • Custom Size Weld Fittings Comes with MTC 10204 Type 3.1/3.2 Suitable for Chemical and Marine Environments.

  • Over 250 Traders and Fabricators in Middle East and European Countries Import Prime Quality BLRF, SORF, WNRF and SWRF Flange Because Our Material is Accepted in ADNOC and Saudi Armco.

  • Stockholder of Ferrous and Non Ferrous Metals As Per ASTM, ASME, DIN, EN, API, JIS and BS Standard and With NDT Testing.

  • Supplying Large Diameter Elbow, Tee and Reducer to Wholesalers and Stockists in Al Jubail, Dubai, Seoul and Johannesburg at Resale Price.

  • Also Keep Custom Specification and Sizes Ex Stock With Stockholders in Bahrain, Belgium and Europe for Urgent Requirements Replacement Situations.

  • Importers in South Africa and West Africa of Premier Nickel Alloy Forging in Various Forms like Fittings & Flanges, Pipe & Tube, Plate & Sheet, Fasteners for Petrochemical and Oil Refineries.

  • Since 12+ Years, Shikhar Steel Rank in Top 4 Exporter of Stainless Steel Forgings at Competitive Price, Compare Price in India, UK, China and Germany.

  • Ask for Free Sample and Price list of High Quality CNC Components.

  • Contact Now If You Need Piping Accessories in Singapore, South Korea, Japan, Taiwan and Kenya.

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