Dimensions
1/2”, 2”, 3”, 4”, 6”, 8”, 10”, up to 24”.
Weld Neck Flange suppliers in UAE
Stainless steel weld neck flange manufacturers in Dubai, refer to WNRF flange dimensions in MM, weight, and online price list as per ANSI B16.5
Long Weld Neck Vs. Weld Neck Flange
Long Weld Neck Flanges are just likean Weld Neck Flange except that the neck is lengthened. It acts as a boring extension. Long weld neck flanges could be employed in high pressure and high temperature industrial uses. They're frequently used in the oil and gas or chemical sectors.
The weld flange is a forged item used to connect pipes and pieces in a piping system. The welding on this flange offers a strong connection.It is easy to install and detach for regular maintenance and repairs.
ASME B16.5 Weld Neck Flange Installation
A common integral-type flange is a ASME B16.5 Weld Neck Flange that conforms to ASME B16.5. It is completely cast or welded with the tapered neck. Because the high-stress concentration at the foot of the flange is decreased by shifting tension to the surrounding pipe.This design offers a smooth changeover with little tensile stress. The welding neck flange is the finest constructed butt weld flange accessible, despite its high cost.This is because the long tapered hub gives superior durability and resistance to dishing.
Check benefits of carbon steel weld neck flange and of long weld neck flange in class 150 to 2500
Advantages And Disadvantages Of Carbon Steel Weld Neck Flange
Some flange elements, like a Carbon Steel Weld Neck Flange, are extremely heat resistant. The enormous pressure created in plumbing installations throughout the sector necessitates high-pressure resistance. A welded flange is more durable than a bolt-on flange. The bolt-on flange may require a gasket, which may cause leaks.
Assembly of these flanges does necessitate the abilities of a more experienced welder. To minimize friction in the flow of substance, the interior of the connection must be smooth.
How To Calculate Weight Of Stainless Steel Weld Neck Flange
The mass of a Stainless Steel Weld Neck Flange is determined by the substance used in its construction. It can also have an impact on the strain that the flange can withstand.
Therefore, weight = (A1*A1－B1*B1－D1*C1*C1)*C*π/4*7.93/1000000(kg)
Buy ASME B16.5 weld neck flange for oil and gas industry, suppliers & importers welding neck flanges materials according to ASTM A182 F304/ F316/ A105 in the Middle East
Table of content
Specialized in manufacturing
Weld Neck Flange
ASME B16.5 Weld Neck Flange Attach By Welding The Pipe To The Neck Of The Flanges.
Size
1/2 Inches To 24 Inches
Class
150 To 2500
ASTM
A105, A182, A694
ASME
B16.5
Available Size Of Stainless Steel Long Weld Neck Flange
Class range
Class 150 to 2500(# or LB). PN 2.5 to PN 250.
Uses
have long tapered hubs that are butt welded to a pipe.
Benefits of WNRF Flanges
- Low erosion rates
- High cyclical loading capability.
- Causes minimal turbulence
- Means for a direct connection to elbow/ tee or reducers
- Excellent stress-distribution along the tapered hub
| Specifications | Weld Neck Flange |
|---|---|
| Brand Name | Schulzmann |
| Certificate | ISO |
| Size | 1/2” to 24” |
| Payment Type | L/C,T/T,D/P,Paypal |
| Supporting Material For Flanges | Gasket/ Ring Joint/ Flanges Bolts |
| Available Packing | Packing In Plywood Box And Plywood Pallet |
| Class | Class 150 to Class 2500 |
| Supply Ability | 1299 Ton Per Month |
| Use In | Marine & dredging Sanitation Process Instrumentation Oil and Gas Petrochemical/ Refinery/Chemical Power etc. |
| Transportation In | Air & Ocean and Land |
| Weld Neck Flange Manufacturer In UAE | 1500 ton per month (Manufacturing Productivity) |
| Testing | Hydrostatic testing machine Magnetic particle detector Direct-reading Spectrograph UI trasonic flaw detector |
| Methods Of Forging | Casting Forging Rolling Cutting |
| Equipment | Pushing Machine Press machine electric bevelling machine |
| Description | Price In US ($) |
|---|---|
| 1.1/2 NB, 300LB, SCH XS, SA 105N, ASME B16.5 | US $584.68 Per KG |
| SIZE : 3", WELD NECK FLANGE 150# A105 | US $16.85 Per KG |
| FLANGES RF WELD NECK, SIZE : 2", 600# STD | US $54.80 Per KG |
| FLANGES RF WELD NECK 600#, SIZE : 4", STD | US $129.84 Per KG |
| SIZE : 3/4", RF WELD NECK, 150#, SCH 160 | US $39.83 Per KG |
| SIZE : 2", RF WELD NECK, 150#, STD | US $47.56 Per KG |
| SIZE : 3", RF, WELD NECK, 600#, XS | US $107.27 Per KG |
| SIZE : 2", RF/RTJ, 900#, WELD NECK, XXS, A105/LF2 | US $774.41 Per KG |
| 1.1/2, RTJ, 1500#, WELD NECK, 160, A105/LF2 | US $299.79 Per KG |
| SIZE : 6", RF, WELD NECK, 600#, XS LF2 | US $216.69 Per KG |
| SIZE : 4", FLANGES RF, WELD NECK, 300#, STD | US $251.11 Per KG |
| SIZE : 8", RTJ, 1500#, WELD NECK, 160, A105/LF2 | US $3040.37 Per KG |
Types Of Weld Neck Pipe Flanges
Stainless Steel Weld Neck Flanges
SS Weld Neck Flanges
Stainless Steel Long Weld Neck Flanges
LWNRF Flanges
WNRF Flanges
3 Inch Welding Neck Flange
Raised Face Weld Neck Flanges
Flat Face Weld Neck Flanges
Reducing Weld Neck Flanges
6 Inch Weld Neck Flanges
Carbon Steel Weld Neck Flanges
ASTM A105 WN Flange
ASME B16.5 Weld Neck Flanges
Well Neck Flanges
Straight Hub Welding Flanges
ASME B16.5 Weld Neck Flange Dimensions In MM
Class 150 Weld Neck Flanges Dimensions In MM
| Size In Inches | D In (millimeter) | X In (millimeter) | G In (millimeter) | t In (millimeter) | B1 In (millimeter) | T1 In (millimeter) | A In (millimeter) |
|---|---|---|---|---|---|---|---|
| 1/2 | 89 | 30.2 | 35.1 | 11.2 | 15.7 | 47.8 | 21.3 |
| 3/4 | 99 | 38.1 | 42.9 | 12.7 | 20.8 | 52.3 | 26.7 |
| 1 | 108 | 49.3 | 50.8 | 14.2 | 26.7 | 55.6 | 33.5 |
| 1¼ | 117 | 58.7 | 63.5 | 15.7 | 35.1 | 57.2 | 42.2 |
| 1½ | 127 | 65.0 | 73.2 | 17.5 | 40.9 | 62.0 | 48.3 |
| 2 | 152 | 77.7 | 91.9 | 19.1 | 52.6 | 63.5 | 60.5 |
| 2½ | 178 | 90.4 | 104.6 | 22.4 | 62.7 | 69.9 | 73.2 |
| 3 | 191 | 108.0 | 127.0 | 23.9 | 78.0 | 69.9 | 88.9 |
| 3½ | 216 | 122.2 | 139.7 | 23.9 | 90.2 | 71.4 | 101.6 |
| 4 | 229 | 134.9 | 157.2 | 23.9 | 102.4 | 76.2 | 114.3 |
| 5 | 254 | 163.6 | 185.7 | 23.9 | 128.3 | 88.9 | 141.2 |
| 6 | 279 | 192.0 | 215.9 | 25.4 | 154.2 | 88.9 | 168.4 |
| 8 | 343 | 246.1 | 269.7 | 28.4 | 202.7 | 101.6 | 218.2 |
| 10 | 406 | 304.8 | 323.9 | 30.2 | 254.5 | 101.6 | 273.1 |
| 12 | 483 | 365.3 | 381.0 | 31.8 | 304.8 | 114.3 | 323.9 |
| 14 | 533 | 400.1 | 412.8 | 35.1 | 336.6 | 127.0 | 355.6 |
| 16 | 597 | 457.2 | 469.9 | 36.6 | 387.4 | 127.0 | 406.4 |
| 18 | 635 | 505.0 | 533.4 | 39.6 | 438.2 | 139.7 | 457.2 |
| 20 | 699 | 558.8 | 584.2 | 42.9 | 489.0 | 144.5 | 508.0 |
| 24 | 813 | 663.4 | 692.2 | 47.8 | 590.6 | 152.4 | 609.6 |
Class 300 Weld Neck Flanges Dimensions In MM
| Size In Inches | D In (millimeter) | X In (millimeter) | G In (millimeter) | t In (millimeter) | B1 In (millimeter) | T1 In (millimeter) | A In (millimeter) |
|---|---|---|---|---|---|---|---|
| 1/2 | 95 | 38.1 | 35.1 | 14.2 | 15.7 | 52.3 | 21.3 |
| 3/4 | 117 | 47.8 | 42.9 | 15.7 | 20.8 | 57.2 | 26.7 |
| 1 | 124 | 53.8 | 50.8 | 17.5 | 26.7 | 62.0 | 33.5 |
| 1¼ | 133 | 63.5 | 63.5 | 19.1 | 35.1 | 65.0 | 42.2 |
| 1½ | 155 | 69.9 | 73.2 | 20.6 | 40.9 | 68.3 | 48.3 |
| 2 | 165 | 84.1 | 91.9 | 22.4 | 52.6 | 69.9 | 60.5 |
| 2½ | 191 | 100.1 | 104.6 | 25.4 | 62.7 | 76.2 | 73.2 |
| 3 | 210 | 117.3 | 127.0 | 28.4 | 78.0 | 79.2 | 88.9 |
| 3½ | 229 | 133.4 | 139.7 | 30.2 | 90.2 | 81.0 | 101.6 |
| 4 | 254 | 146.1 | 157.2 | 31.8 | 102.4 | 85.9 | 114.3 |
| 5 | 279 | 177.8 | 185.7 | 35.1 | 128.3 | 98.6 | 141.2 |
| 6 | 318 | 206.2 | 215.9 | 36.6 | 154.2 | 98.6 | 168.4 |
| 8 | 381 | 260.4 | 269.7 | 41.1 | 202.7 | 111.3 | 219.2 |
| 10 | 445 | 320.5 | 323.9 | 47.8 | 254.5 | 117.3 | 273.1 |
| 12 | 521 | 374.7 | 381.0 | 50.8 | 304.8 | 130.0 | 323.9 |
| 14 | 584 | 425.5 | 412.8 | 63.8 | 336.6 | 142.7 | 355.6 |
| 16 | 648 | 482.6 | 469.9 | 57.2 | 387.4 | 146.1 | 406.4 |
| 18 | 711 | 533.4 | 533.4 | 60.5 | 438.2 | 158.8 | 457.2 |
| 20 | 775 | 587.2 | 584.2 | 63.5 | 489.0 | 162.1 | 508.0 |
| 24 | 914 | 701.5 | 692.2 | 69.9 | 590.6 | 168.1 | 609.6 |
Class 600 Weld Neck Flanges Dimensions In MM
| Size In Inches | D In (millimeter) | X In (millimeter) | G In (millimeter) | t In (millimeter) | B1 In (millimeter) | T1 In (millimeter) | A In (millimeter) |
|---|---|---|---|---|---|---|---|
| 1/2 | 95 | 38.1 | 35.1 | 14.2 | B36.10/.19 | 52.3 | 21.3 |
| 3/4 | 117 | 47.8 | 42.9 | 15.7 | B36.10/.19 | 57.2 | 26.7 |
| 1 | 124 | 53.8 | 50.8 | 17.5 | B36.10/.19 | 62.0 | 33.5 |
| 1¼ | 133 | 63.5 | 63.5 | 20.6 | B36.10/.19 | 66.5 | 42.2 |
| 1½ | 155 | 69.9 | 73.2 | 22.4 | B36.10/.19 | 69.9 | 48.3 |
| 2 | 165 | 84.1 | 91.9 | 25.4 | B36.10/.19 | 73.2 | 60.5 |
| 2½ | 191 | 100.1 | 104.6 | 28.4 | B36.10/.19 | 79.2 | 73.2 |
| 3 | 210 | 117.3 | 127.0 | 31.8 | B36.10/.19 | 82.6 | 88.9 |
| 3½ | 229 | 133.4 | 139.7 | 35.1 | B36.10/.19 | 85.9 | 101.6 |
| 4 | 273 | 152.4 | 157.2 | 38.1 | B36.10/.19 | 101.6 | 114.3 |
| 5 | 330 | 189.0 | 185.7 | 44.5 | B36.10/.19 | 114.3 | 141.2 |
| 6 | 356 | 222.3 | 215.9 | 47.8 | B36.10/.19 | 117.3 | 168.4 |
| 8 | 419 | 273.1 | 269.7 | 55.6 | B36.10/.19 | 133.4 | 219.2 |
| 10 | 508 | 342.9 | 323.9 | 63.5 | B36.10/.19 | 152.4 | 273.1 |
| 12 | 559 | 400.1 | 381.0 | 66.5 | B36.10/.19 | 155.4 | 323.9 |
| 14 | 603 | 431.8 | 412.8 | 69.9 | B36.10/.19 | 165.1 | 355.6 |
| 16 | 686 | 495.3 | 469.9 | 76.2 | B36.10/.19 | 177.8 | 406.4 |
| 18 | 743 | 546.1 | 533.4 | 82.6 | B36.10/.19 | 184.2 | 457.2 |
| 20 | 813 | 609.6 | 584.2 | 88.9 | B36.10/.19 | 190.5 | 508.0 |
| 24 | 940 | 717.6 | 692.2 | 101.6 | B36.10/.19 | 203.2 | 609.6 |
Class 900 Weld Neck Flanges Dimensions In MM
| Size In Inches | D In (millimeter) | X In (millimeter) | G In (millimeter) | t In (millimeter) | B1 In (millimeter) | T1 In (millimeter) | A In (millimeter) |
|---|---|---|---|---|---|---|---|
| 1/2 | 121 | 38.1 | 35.1 | 22.4 | B36.10/.19 | 60.5 | 21.3 |
| 3/4 | 130 | 44.5 | 42.9 | 25.4 | B36.10/.19 | 69.9 | 26.7 |
| 1 | 149 | 52.3 | 50.8 | 28.4 | B36.10/.19 | 73.2 | 33.5 |
| 1¼ | 159 | 63.5 | 63.5 | 28.4 | B36.10/.19 | 73.2 | 42.2 |
| 1½ | 178 | 69.9 | 73.2 | 31.8 | B36.10/.19 | 82.6 | 48.3 |
| 2 | 216 | 104.6 | 91.9 | 38.1 | B36.10/.19 | 101.6 | 60.5 |
| 2½ | 244 | 124.0 | 104.6 | 41.1 | B36.10/.19 | 104.6 | 73.2 |
| 3 | 241 | 127.0 | 127.0 | 38.1 | B36.10/.19 | 101.6 | 88.9 |
| 4 | 292 | 158.8 | 157.2 | 44.5 | B36.10/.19 | 114.3 | 114.3 |
| 5 | 349 | 190.5 | 185.7 | 50.8 | B36.10/.19 | 127.0 | 141.2 |
| 6 | 381 | 235.0 | 215.9 | 55.6 | B36.10/.19 | 139.7 | 168.4 |
| 8 | 470 | 298.5 | 269.7 | 63.5 | B36.10/.19 | 162.1 | 219.2 |
| 10 | 546 | 368.3 | 323.9 | 69.9 | B36.10/.19 | 184.2 | 273.1 |
| 12 | 610 | 419.1 | 381.0 | 79.2 | B36.10/.19 | 200.2 | 323.9 |
| 14 | 641 | 450.9 | 412.8 | 85.9 | B36.10/.19 | 212.9 | 355.6 |
| 16 | 705 | 508.0 | 469.9 | 88.9 | B36.10/.19 | 215.9 | 406.4 |
| 18 | 787 | 565.2 | 533.4 | 101.6 | B36.10/.19 | 228.6 | 457.2 |
| 20 | 857 | 622.3 | 584.2 | 108.0 | B36.10/.19 | 247.7 | 508.0 |
| 24 | 1041 | 749.3 | 692.2 | 139.7 | B36.10/.19 | 292.1 | 609.6 |
Grade Of Stainless Steel Weld Neck Flanges
Class 1500 Weld Neck Flanges Dimensions In Inch
| Normal Pipe Size In Inch | ID In Inch | OD In Inch | Bolt Circle In Inch | Raised Face (R) In Inch | R/F In Inch | H In Inch | H1 In Inch | R/F Thickness (T) In Inch | T1 In Inch | F/F Thickness (T2) In Inch | Bolt Hole (B) In Inch | Number of Bolt Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 0.55 | 4.75 | 3.25 | 1.38 | .250 | 1.50 | 0.84 | 2.63 | 0.88 | 2.38 | 0.88 | 4 |
| 3/4 | 0.74 | 5.13 | 3.50 | 1.69 | .250 | 1.75 | 1.05 | 3.00 | 1.00 | 2.75 | 0.88 | 4 |
| 1 | 0.96 | 5.88 | 4.00 | 2.00 | .250 | 2.06 | 1.32 | 3.13 | 1.13 | 2.88 | 1.00 | 4 |
| 1-1/4 | 1.28 | 6.25 | 4.38 | 2.50 | .250 | 2.50 | 1.66 | 3.13 | 1.13 | 2.88 | 1.00 | 4 |
| 1-1/2 | 1.50 | 7.00 | 4.88 | 2.88 | .250 | 2.75 | 1.90 | 3.50 | 1.25 | 3.25 | 1.13 | 4 |
| 2 | 1.94 | 8.50 | 6.50 | 3.63 | .250 | 4.13 | 2.38 | 4.25 | 1.50 | 4.00 | 1.00 | 8 |
| 2-1/2 | 2.32 | 9.63 | 7.50 | 4.13 | .250 | 4.88 | 2.88 | 4.38 | 1.63 | 4.13 | 1.13 | 8 |
| 3 | 2.90 | 10.50 | 8.00 | 5.00 | .250 | 5.25 | 3.50 | 4.88 | 1.88 | 4.63 | 1.25 | 8 |
| 4 | 3.83 | 12.25 | 9.50 | 6.19 | .250 | 6.38 | 4.50 | 5.13 | 2.13 | 4.88 | 1.38 | 8 |
| 5 | 4.81 | 14.75 | 11.50 | 7.31 | .250 | 7.75 | 5.56 | 6.38 | 2.88 | 6.13 | 1.63 | 8 |
| 6 | 5.76 | 15.50 | 12.50 | 8.50 | .250 | 9.00 | 6.63 | 7.00 | 3.25 | 6.75 | 1.50 | 12 |
| 8 | 7.63 | 19.00 | 15.50 | 10.63 | .250 | 11.50 | 8.63 | 8.63 | 3.63 | 8.38 | 1.75 | 12 |
| 10 | 9.75 | 23.00 | 19.00 | 12.75 | .250 | 14.50 | 10.75 | 10.25 | 4.25 | 10.00 | 2.00 | 12 |
| 12 | 11.75 | 26.50 | 22.50 | 15.00 | .250 | 17.75 | 12.75 | 11.38 | 4.88 | 11.13 | 2.13 | 16 |
| 14 | 13.00 | 29.50 | 25.00 | 16.25 | .250 | 19.50 | 14.00 | 12.00 | 5.25 | 11.75 | 2.38 | 16 |
| 16 | 15.00 | 32.50 | 27.75 | 18.50 | .250 | 21.75 | 16.00 | 12.50 | 5.75 | 12.25 | 2.63 | 16 |
| 18 | 17.00 | 36.00 | 30.50 | 21.00 | .250 | 23.50 | 18.00 | 13.13 | 6.38 | 12.88 | 2.88 | 16 |
| 20 | 19.00 | 38.75 | 32.75 | 23.00 | .250 | 25.25 | 20.00 | 14.25 | 7.00 | 14.00 | 3.13 | 16 |
| 24 | 23.00 | 46.00 | 39.00 | 27.25 | .250 | 30.00 | 24.00 | 16.25 | 8.00 | 16.00 | 3.63 | 16 |
Class 2500 Weld Neck Flanges Dimensions In Inch
| Normal Pipe Size In Inch | ID In Inch | OD In Inch | Bolt Circle In Inch | Raised Face (R) In Inch | R/F In Inch | H In Inch | H1 In Inch | R/F Thickness (T) In Inch | T1 In Inch | F/F Thickness (T2) In Inch | Bolt Hole (B) In Inch | Number of Bolt Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 0.55 | 5.25 | 3.50 | 1.38 | .250 | 1.69 | 0.84 | 3.13 | 1.19 | 2.88 | 0.88 | 4 |
| 3/4 | 0.74 | 5.50 | 3.75 | 1.69 | .250 | 2.00 | 1.05 | 3.38 | 1.25 | 3.13 | 0.88 | 4 |
| 1 | 0.96 | 6.25 | 4.25 | 2.00 | .250 | 2.25 | 1.32 | 3.75 | 1.38 | 3.50 | 1.00 | 4 |
| 1-1/4 | 1.28 | 7.25 | 5.13 | 2.50 | .250 | 2.88 | 1.66 | 4.00 | 1.50 | 3.75 | 1.13 | 4 |
| 1-1/2 | 1.50 | 8.00 | 5.75 | 2.88 | .250 | 3.13 | 1.90 | 4.63 | 1.75 | 4.38 | 1.25 | 4 |
| 2 | 1.94 | 9.25 | 6.75 | 3.63 | .250 | 3.75 | 2.38 | 5.25 | 2.00 | 5.00 | 1.13 | 8 |
| 2-1/2 | 2.32 | 10.50 | 7.75 | 4.13 | .250 | 4.50 | 2.88 | 5.88 | 2.25 | 5.63 | 1.25 | 8 |
| 3 | 2.90 | 12.00 | 9.00 | 5.00 | .250 | 5.25 | 3.50 | 6.88 | 2.63 | 6.63 | 1.38 | 8 |
| 4 | 3.83 | 14.00 | 10.75 | 6.19 | .250 | 6.50 | 4.50 | 7.75 | 3.00 | 7.50 | 1.63 | 8 |
| 5 | 4.81 | 16.50 | 12.75 | 7.31 | .250 | 8.00 | 5.56 | 9.25 | 3.63 | 9.00 | 1.88 | 8 |
| 6 | 5.76 | 19.00 | 14.50 | 8.50 | .250 | 9.25 | 6.63 | 11.00 | 4.25 | 10.75 | 2.13 | 8 |
| 8 | 7.63 | 21.75 | 17.25 | 10.63 | .250 | 12.00 | 8.63 | 12.75 | 5.00 | 12.50 | 2.13 | 12 |
| 10 | 9.75 | 26.50 | 21.25 | 12.75 | .250 | 14.75 | 10.75 | 16.75 | 6.50 | 16.50 | 2.63 | 12 |
| 12 | 11.75 | 30.00 | 24.38 | 15.00 | .250 | 17.38 | 12.75 | 18.50 | 7.25 | 18.25 | 2.88 | 12 |
(LWNRF) : Long Weld Neck Raised Face flanges
Long Weld Neck Flange Dimensions
| Size in (Inches) | Size in (Millimeter) | OD | Thick. | O.D. Of Hub | O.D. Of Weld Neck | Diameter Of R/F | Height Of R/F | PCD | Length Of Hub | Number of Bolts | Size Of Bolts UNC | Length Of Machine Bolts | Length Of R/F Stud | Size Of Hole | Size Of ISO Stud |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | ||||||||
| 1/2 | 15 | 90 | 9.6 | 30 | 21.3 | 34.9 | 2 | 60.3 | As Required | 4 | 1/2 | 50 | 55 | 5/8 | M14 |
| 3/4 | 20 | 100 | 11.2 | 38 | 26.7 | 42.9 | 2 | 69.9 | - | 4 | 1/2 | 50 | 65 | 5/8 | M14 |
| 1 | 25 | 110 | 12.7 | 49 | 33.4 | 50.8 | 2 | 79.4 | - | 4 | 1/2 | 55 | 65 | 5/8 | M14 |
| 1 1/4 | 32 | 115 | 14.3 | 59 | 42.2 | 63.5 | 2 | 88.9 | - | 4 | 1/2 | 55 | 70 | 5/8 | M14 |
| 1 1/2 | 40 | 125 | 15.9 | 65 | 48.3 | 73 | 2 | 98.4 | - | 4 | 1/2 | 65 | 70 | 5/8 | M14 |
| 2 | 50 | 150 | 17.5 | 78 | 60.3 | 92.1 | 2 | 120.7 | - | 4 | 5/8 | 70 | 85 | 3/4 | M16 |
| 2 1/2 | 65 | 180 | 20.7 | 90 | 73 | 104.8 | 2 | 139.7 | - | 4 | 5/8 | 75 | 90 | 3/4 | M16 |
| 3 | 80 | 190 | 22.3 | 108 | 88.9 | 127 | 2 | 152.4 | - | 4 | 5/8 | 75 | 90 | 3/4 | M16 |
| 3 1/2 | 90 | 215 | 22.3 | 122 | 101.6 | 139.7 | 2 | 177.8 | - | 8 | 5/8 | 75 | 90 | 3/4 | M16 |
| 4 | 100 | 230 | 22.3 | 135 | 114.3 | 157.2 | 2 | 190.5 | - | 8 | 5/8 | 75 | 90 | 3/4 | M16 |
| 5 | 125 | 255 | 22.3 | 164 | 141.3 | 185.7 | 2 | 215.9 | - | 8 | 3/4 | 85 | 95 | 7/8 | M20 |
| 6 | 150 | 280 | 23.9 | 192 | 168.3 | 215.9 | 2 | 241.3 | - | 8 | 3/4 | 85 | 100 | 7/8 | M20 |
| 8 | 200 | 345 | 27 | 246 | 219.1 | 269.9 | 2 | 298.5 | - | 8 | 3/4 | 90 | 110 | 7/8 | M20 |
| 10 | 250 | 405 | 28.6 | 305 | 273 | 323.8 | 2 | 362 | - | 12 | 7/8 | 100 | 115 | 1 | M24 |
| 12 | 300 | 485 | 30.2 | 365 | 323.8 | 381 | 2 | 431.8 | - | 12 | 7/8 | 100 | 120 | 1 | M24 |
| 14 | 350 | 535 | 33.4 | 400 | 355.6 | 412.8 | 2 | 476.3 | - | 12 | 1 | 115 | 135 | 1 1/8 | M27 |
| 16 | 400 | 595 | 35 | 457 | 406.4 | 469.9 | 2 | 539.8 | - | 16 | 1 | 115 | 135 | 1 1/8 | M27 |
| 18 | 450 | 635 | 38.1 | 505 | 457.2 | 533.4 | 2 | 577.9 | - | 16 | 1 1/8 | 125 | 145 | 1 1/4 | M30 |
| 20 | 500 | 700 | 41.3 | 559 | 508 | 584.2 | 2 | 635 | - | 20 | 1 1/8 | 140 | 160 | 1 1/4 | M30 |
| 24 | 600 | 815 | 46.1 | 663 | 610 | 692.2 | 2 | 749.3 | As Required | 20 | 1 1/4 | 150 | 170 | 1 3/8 | M33 |
Refer pressure rating of WN flanges, and ready sizes of alloy steel weld neck flange in UAE, call Schulzmann for a free sample!
Carbon Steel Weld Neck Flange Pressure Ratings
| Temperature (Dedgree C) | Class Of Weld Neck Flanges | ||||||
|---|---|---|---|---|---|---|---|
| (150#) | (300#) | (400#) | (600#) | (900#) | (1500#) | (2500#) | |
| -29 - 38 | 19.8 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
| 100 | 17.7 | 51.5 | 68.7 | 103.0 | 155 | 258 | 429 |
| 150 | 15.8 | 50.2 | 66.8 | 100.3 | 151 | 251 | 418 |
| 200 | 13.8 | 48.6 | 64.8 | 97.2 | 146 | 243 | 405 |
| 250 | 12.1 | 46.3 | 61.7 | 92.7 | 139 | 232 | 386 |
| 300 | 10.2 | 42.9 | 57.0 | 85.7 | 129 | 214 | 357 |
| 325 | 9.3 | 41.4 | 55.0 | 82.6 | 124 | 207 | 344 |
| 350 | 8.4 | 40.0 | 53.4 | 80.0 | 120 | 200 | 334 |
| 375 | 7.4 | 37.8 | 50.4 | 75.7 | 114 | 189 | 315 |
| 400 | 6.5 | 34.7 | 46.3 | 69.4 | 104 | 174 | 290 |
| 425 | 5.5 | 28.8 | 38.4 | 57.5 | 86.3 | 144 | 240 |
| 450 | 4.6 | 23.0 | 30.7 | 46.0 | 69.0 | 115 | 192 |
| 475 | 3.7 | 17.1 | 22.8 | 34.2 | 51.3 | 85.4 | 142 |
| 500 | 2.8 | 11.6 | 15.4 | 23.2 | 34.7 | 57.9 | 96.5 |
| 538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
Grades Of Carbon Steel WNRF Flanges
Facing Types Of 4 Inch WN Flange
Facing Types
- Flat Face (FF)
- Raised Face (RF)
- Ring Type Joint (RTJ)
- Tongue Face (TF)
- Grooved Face (GF)
Also, check the bolt chart of Weld neck pipe flanges and stockists of straight hub welding flanges in Dubai
Stainless Steel Weld Neck Flange Weight Chart
| Nominal Pipe Size | Weight In Weld Neck Flanges |
|---|---|
| ½ | 2 |
| ¾ | 2 |
| 1 | 3 |
| 1¼ | 3 |
| 1½ | 4 |
| 2 | 6 |
| 2½ | 10 |
| 3 | 11.5 |
| 3½ | 12 |
| 4 | 16.5 |
| 5 | 21 |
| 6 | 26 |
| 8 | 42 |
| 10 | 54 |
| 12 | 88 |
| 14 | 114 |
| 16 | 140 |
| 18 | 165 |
| 20 | 197 |
| 22 | 225 |
| 24 | 268 |
Flat Face Weld Neck Flange Bolt Chart
| Size | Bolt Drilling | Bolting Requirements | |||||
|---|---|---|---|---|---|---|---|
| Inches | Diameter Of Bolt circle In MM | Holes # | Holes Diameter In MM | Bolt Diameter Inches | Length Of F/F | Length Of R/F | Length Of RTJ |
| 1/2 | 60.5 | 4 | 15.7 | 1/2 | 50.8 | 57.2 | – |
| 3/4 | 69.9 | 4 | 15.7 | 1/2 | 50.8 | 63.5 | – |
| 1 | 79.2 | 4 | 15.7 | 1/2 | 57.2 | 63.5 | 76.2 |
| 1¼ | 88.9 | 4 | 15.7 | 1/2 | 57.2 | 69.9 | 82.6 |
| 1½ | 98.6 | 4 | 15.7 | 1/2 | 63.5 | 69.9 | 82.6 |
| 2 | 120.7 | 4 | 19.1 | 5/8 | 69.9 | 82.6 | 95.3 |
| 2½ | 139.7 | 4 | 19.1 | 5/8 | 76.2 | 88.9 | 101.6 |
| 3 | 152.4 | 4 | 19.1 | 5/8 | 76.2 | 88.9 | 101.6 |
| 3½ | 177.8 | 8 | 19.1 | 5/8 | 76.2 | 88.9 | 101.6 |
| 4 | 190.5 | 8 | 19.1 | 5/8 | 76.2 | 88.9 | 101.6 |
| 5 | 215.9 | 8 | 22.4 | 3/4 | 82.6 | 95.3 | 108.0 |
| 6 | 241.3 | 8 | 22.4 | 3/4 | 82.6 | 101.6 | 114.3 |
| 8 | 298.5 | 8 | 22.4 | 3/4 | 88.9 | 108.0 | 120.7 |
| 10 | 362.0 | 12 | 25.4 | 7/8 | 101.6 | 114.3 | 127.0 |
| 12 | 431.8 | 12 | 25.4 | 7/8 | 101.6 | 120.7 | 133.4 |
| 14 | 476.3 | 12 | 28.4 | 1 | 114.3 | 133.4 | 146.1 |
| 16 | 539.8 | 16 | 28.4 | 1 | 114.3 | 133.4 | 146.1 |
| 18 | 577.9 | 16 | 31.8 | 11/8 | 127.0 | 146.1 | 158.8 |
| 20 | 635.0 | 20 | 31.8 | 11/8 | 139.7 | 158.8 | 171.5 |
| 24 | 749.3 | 20 | 35.1 | 1¼ | 152.4 | 171.5 | 184.2 |
Grades Of Alloy Steel Welding Neck Flanges
6 Inch Weld Neck Flange Tolerances
| Certificate | thickness of Plate in millimeter | Width in millimeter | Length in millimeter | |
| OD | When O is 24 Inch or less. When O is over 24 Inch. | ±0.06 Inches ±0.12 Inches | ±1.6 (mm) | ±3.2 (mm) |
| Contact Face Diameter | 0.06″ (1.6 mm) R/F. 0.25″ (6.4 mm) R/F. | ±0.03″ ±0.02″ | ±0.8 (mm) | ±0.5 (mm) |
| Dia. of Hub at Point of Welding | Normal Pipe Size 5 and same Normal Pipe Size 6 and larger. | +0.09″, -0.03″ +0.16″, -0.03″ | +2.4 (mm), -0.8(mm) | +4.0 (mm), -0.8 (mm) |
| ID | Normal Pipe Size 10, 12, 18, 20 and larger. | +0.03″ +0.06″ +0.12″, -0.06″ | +0.8 mm +1.6 mm | +3.2 mm, -1.6 mm |
| Dia. of Hub at Base | Hub Base is 24 Inches or less. Hub Base is over 24 Inches. | +0.06″ +0.12″ | +1.6 (mm) | +3.2 (mm) |
| Thickness | NPS 18 and same NPS 20 and larger. | +0.12″ +0.19″ | +3.2 (millimeter) | +4.8 (millimeter) |
| Facings and Drilling | B.C. dia. Bolt Hole Spacing | ±0.06″ ±0.03″ | ±1.6 mm | ±0.8 mm |
| Eccentricity of B.C. and Facing | Normal Pipe Size 2 1/2 and smaller. Normal Pipe Size 3 and larger. | ±0.03″ ±0.06″ | ±0.8 mm | ±1.6 mm |
| Length Through Hub | Normal Pipe Size 10 and smaller. Normal Pipe Size 12 and larger. | ±0.06″ ±0.12″ | ±1.6 (mm) | ±3.2 (mm) |