Stainless Steel Long Weld Neck Flange

Stainless Steel Long Weld Neck Flange

Biggest Carbon Steel LWNRF Flange Manufacturer in India, We Supply ASME B16.5 LWN Flange for Intermediate and High Temperature applications

As opposed to the more conventionally used weld neck flanges, which are used extensively for pipes, the specified ANSI B16.5 Long Weld Neck Flange is often used in those applications where the flange has been exposed to both high pressures as well as high temperature settings. In fact, the asme b16.5 long weld neck flange dimensions produced by us could also be used in those settings where the temperature range generally fluctuates. Primarily, the raised face long weld neck flange can be found in applications involving highly demanding industries such as the oil and gas industry.

As opposed to the more conventionally used weld neck flanges, which are used extensively for pipes, the specified ANSI B16.5 Long Weld Neck Flange is often used in those applications where the flange has been exposed to both high pressures as well as high temperature settings. In fact, the asme b16.5 long weld neck flange dimensions produced by us could also be used in those settings where the temperature range generally fluctuates. Primarily, the raised face long weld neck flange can be found in applications involving highly demanding industries such as the oil and gas industry.

Leading ANSI B16.5 Long Weld Neck Flange Stockist in Mumbai at factory price and custom sizes, we supply Inconel Rtj LWNRF Flange in more than 25 countries

The Carbon Steel Long Weld Neck Flange which is often abbreviated to LWN, is one of the more cheaper alternatives in comparison to other alloy groups - due to its low alloying costs. Functionally, a Long Weld Neck Flange is what guides the pipe into the flange itself following which it provides reinforcement, which, typically a conventionally used weld neck flange cannot. This reinforcement, provided by the RTJ Long Weld Neck Flange is considered to be very important, especially for safety in high pressure industrial, commercial or even in residential systems.

Usually, these stainless steel long weld neck flanges tend to be the anchors for water mains as well as sources of gas which have been pumped into a larger network of pipes, for e.g. those pipes in a factory or in an apartment building. Aside from the aforementioned applications, the 150# LWN flange is also used in situations like the expansion of bends or changing of pipes due to high pressure.

Exporter of Alloy Steel Long Weld Neck Flange in all size, types and dimension, buy Hastelloy C276 LWN Flanges at affortable price in India

Stainless Steel Long Weld Neck Flange

Stainless Steel Long Weld Neck Flange


Carbon Steel LWNRF Flange

Carbon Steel LWNRF Flange


ASME B16.5 LWN Flange

ASME B16.5 LWN Flange



Stainless Steel Long Neck Weld Flange Specifications

Manufacturer of Stainless Steel Long Neck Weld Flange
ANSI Pressure Class 150LBS, 900LBS, 300LBS, 600LBS, 2500LBS, 1500LBS, Long Weld Neck Flange
Meets Standards ANSI, ASME, BS, EN, SABS 1123, GOST 12821-80, GOST 33259, API, JIS, MSS, UNI, ASTM, API, ISO, DIN, SP, Lwn Flange
EN 1092-1/ EN 1092-2 Asme B 16.5 Long Weld Neck Flange standard
10Bar, 40Bar, 6Bar, 25Bar, 16Bar, Ansi B16.5 Long Weld Neck Flange
BS Standards BS4504, BS10, BS4504, BS1560, 300# Long Weld Neck Flange
Japanese Industrial Standards - JIS B2220 10K, 5K, 30K, 40K, 63K, 20K, 16K, 2 Inch Long Weld Neck Flange
DIN Standards DIN 2628, DIN 2635, DIN 2655, DIN 2576, DIN 2636, DIN 2637, DIN 2641, 2631, DIN 2638, DIN 2673, DIN 2573, DIN 2566, DIN 2527, DIN 2642, DIN 2633, DIN 2634, DIN 2656, DIN 2502, DIN 2503, DIN 2527, DIN 2565, DIN 2566, DIN 2573, DIN 2576, DIN 2627, DIN 2628, DIN 2629, DIN 2630, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 Raised Face Long Weld Neck Flange
Wall Thickness Sch10, Sch20, Sch30, STD, Sch40, Sch60, EXT-Hvy, Sch80, Sch100, Sch120, Sch140, Sch 60, XX-Hvy, Stainless Steel Long Weld Neck Flange
Types Threaded, Welded, Plate, Forged, Screwed, Carbon Steel Long Weld Neck Flange
Most common Long Weld Neck Flange processes followed by manufacturers
  • Cutting
  • Casting
  • Open die forging
  • Closed die forging
  • Roll forging
We also supply
  • Sealing Gaskets
  • Ring Joint Gasket
  • Flange Bolts as Required
Flange faces
  • Flat (FF)
  • Ring joint (RTJ)
  • Raised (RF)
  • Lap joint
  • Tongue and groove (T&G)
  • Male and female (M&F)
Stainless Steel Long Neck Weld Flange Standard
  • ASME B16.5 (Most popular)
  • ASME B16.47 Series B & A
  • ASME B16.48
  • GOST
  • BS4504
DIN Standards
  • DIN 2501
  • DIN 2633
  • DIN 2627
  • DIN 2642
  • DIN 2635
  • DIN 2543
  • DIN 2527
PN Rating PN10, PN25, PN6, PN16, PN40, PN64, Ansi B16 5 Long Weld Neck Flange
Quality Inspection
  • EN 10204/3.1B MTC
  • 100% Radiography Test Report for any Cracks or any incomplete penetration
  • Raw Materials Certificate
  • Third Party Inspection Report
Value Added Services
  • CNC Machining
  • Large Diameter Long Weld Neck Flange
  • Customised Ansi B16.5 Long Weld Neck Flange

Ansi B16.5 Long Weld Neck Flange Price in India

Description Price in US $ Price in INR Recent supply location
LONG WELDING NECK FLANGE ASME B 16.5 1 CL 150,RF, L=275MM US $ 12.07 per kg INR 920 per Kg Oman
CARBON STEEL GRADE B LONG WELD NECK FLANGE 155MM LONGSA-105 US $ 7.80 per kg INR 595 per Kg Brazil
SA105 RF LONG WELD NECK FLANGEX245MM LONG SIZE32MM US $ 11.62 per kg INR 886 per Kg Indonesia
A105 GR A LF2(LTCS) 4 X - X 300# RF RF LONG WELD NECK FLANGE X 265MM US $ 11.42 per kg INR 871 per Kg Malaysia
200MM X-X 1500#RFX LONG WELD NECK FLANGE X420MM US $ 9.68 per kg INR 738 per Kg Saudi Arabia

Different types of Lwn Flange

Lwn Flange

Lwn Flange

Long Weld Neck Flange

Long Weld Neck Flange

Ansi B16.5 Long Weld Neck Flange

Ansi B16.5 Long Weld Neck Flange

2 Inch Long Weld Neck Flange

2 Inch Long Weld Neck Flange

300# Long Weld Neck Flange

300# Long Weld Neck Flange

Raised Face Long Weld Neck Flange

Raised Face Long Weld Neck Flange

Stainless Steel Long Weld Neck Flange

Stainless Steel Long Weld Neck Flange

Carbon Steel Long Weld Neck Flange

Carbon Steel Long Weld Neck Flange

ASME B16.5 Long Weld Neck Flange

ASME B16.5 Long Weld Neck Flange


Carbon Steel Long Weld Neck Flange Pressure Rating

Temperature °F 300 LBS 400 LBS 150 LBS 600 LBS 900 LBS 1500 LBS 2500 LBS
-20 to 100 720 960 275 1440 2160 3600 6000
700 425 565 110 850 1275 2125 3540
600 435 580 140 875 1310 2185 3640
200 600 800 230 1200 1800 3000 5000
1100 255 345 20 515 770 1285 2145
400 495 660 190 995 1490 2485 4140
500 465 620 170 930 1395 2330 3880
1200 155 205 20 310 465 770 1285
300 540 720 205 1080 1620 2700 4500
1000 320 430 20 640 965 1605 2675
1500 25 35 10 55 80 135 230
950 380 510 35 765 1145 1910 3180
650 430 575 125 860 1290 2150 3580
1400 50 65 20 95 145 240 400
900 390 520 50 780 1165 1945 3240
750 415 555 95 830 1245 2075 3460
850 395 530 65 790 1190 1980 3300
1250 115 150 20 225 340 565 945
1350 60 80 20 125 185 310 515
800 405 540 80 805 1210 2015 3360
1050 310 410 20 615 925 1545 2570
1150 200 265 20 400 595 995 1655
1300 85 115 20 170 255 430 715
1450 35 45 15 70 105 170 285

Class 600 Long Weld Neck Flange manufacturer in India, we supply Carbon Steel LWN Flange with mechanical performance testing, get a free sample now

Class 150 Long Weld Neck Flange Dimensions

Size in mm Size in Inch Outer Dimeter. Flange Thick. Hub Outer Dimeter Hole Size Weld Neck Outer Dimeter RF Dia. RF Height PCD Bolt Size UNC Machine Bolt Length No of Bolts RF Stud Length ISO Stud Size
15 1/2 90 9.6 30 5/8 21.3 34.9 2 60.3 1/2 50 4 55 M14
20 3/4 100 11.2 38 5/8 26.7 42.9 2 69.9 1/2 50 4 65 M14
25 1 110 12.7 49 5/8 33.4 50.8 2 79.4 1/2 55 4 65 M14
32 1 1/4 115 14.3 59 5/8 42.2 63.5 2 88.9 1/2 55 4 70 M14
40 1 1/2 125 15.9 65 5/8 48.3 73 2 98.4 1/2 65 4 70 M14
50 2 150 17.5 78 3/4 60.3 92.1 2 120.7 5/8 70 4 85 M16
65 2 1/2 180 20.7 90 3/4 73 104.8 2 139.7 5/8 75 4 90 M16
80 3 190 22.3 108 3/4 88.9 127 2 152.4 5/8 75 4 90 M16
90 3 1/2 215 22.3 122 3/4 101.6 139.7 2 177.8 5/8 75 8 90 M16
100 4 230 22.3 135 3/4 114.3 157.2 2 190.5 5/8 75 8 90 M16
125 5 255 22.3 164 7/8 141.3 185.7 2 215.9 3/4 85 8 95 M20
150 6 280 23.9 192 7/8 168.3 215.9 2 241.3 3/4 85 8 100 M20
200 8 345 27 246 7/8 219.1 269.9 2 298.5 3/4 90 8 110 M20
250 10 405 28.6 305 1 273 323.8 2 362 7/8 100 12 115 M24
300 12 485 30.2 365 1 323.8 381 2 431.8 7/8 100 12 120 M24
350 14 535 33.4 400 1 1/8 355.6 412.8 2 476.3 1 115 12 135 M27
400 16 595 35 457 1 1/8 406.4 469.9 2 539.8 1 115 16 135 M27
450 18 635 38.1 505 1 1/4 457.2 533.4 2 577.9 1 1/8 125 16 145 M30
500 20 700 41.3 559 1 1/4 508 584.2 2 635 1 1/8 140 20 160 M30
600 24 815 46.1 663 1 3/8 610 692.2 2 749.3 1 1/4 150 20 170 M33

300# Long Weld Neck Flange Dimension Chart

Outer Diameter Size in Inch Size in mm Flange Thickness Hub Outer Diameter No of Bolts Weld Neck Outer Diameter RF Dia. RF Height PCD Bolt Size UNC RF Stud Length Machine Bolt Length Hole Size ISO Stud Size
95 1/2 15 12.7 38 4 21.3 34.9 2 66.7 1/2 65 55 5/8 M14
115 3/4 20 14.3 48 4 26.7 42.9 2 82.6 5/8 75 65 3/4 M16
125 1 25 15.9 54 4 33.4 50.8 2 88.9 5/8 75 65 3/4 M16
135 1 1/4 32 17.5 64 4 42.2 63.5 2 98.4 5/8 85 70 3/4 M16
155 1 1/2 40 19.1 70 4 48.3 73 2 114.3 3/4 90 75 7/8 M20
165 2 50 20.7 84 8 60.3 92.1 2 127 5/8 90 75 3/4 M16
190 2 1/2 65 23.9 100 8 73 104.8 2 149.2 3/4 100 85 7/8 M20
210 3 80 27 117 8 88.9 127 2 168.3 3/4 110 90 7/8 M20
230 3 1/2 90 28.6 133 8 101.6 139.7 2 184.2 3/4 110 95 7/8 M20
255 4 100 30.2 146 8 114.3 157.2 2 200 3/4 115 95 7/8 M20
280 5 125 33.4 178 8 141.3 185.7 2 235 3/4 120 110 7/8 M20
320 6 150 35 206 12 168.3 215.9 2 269.9 3/4 120 110 7/8 M20
380 8 200 39.7 260 12 219.1 269.9 2 330.2 7/8 140 120 1 M24
445 10 250 46.1 321 16 273 323.8 2 387.4 1 160 140 1 1/8 M27
520 12 300 49.3 375 16 323.8 381 2 450.8 1 1/8 170 145 1 1/4 M30
585 14 350 52.4 425 20 355.6 412.8 2 514.4 1 1/8 180 160 1 1/4 M30
650 16 400 55.6 483 20 406.4 469.9 2 571.5 1 1/4 190 165 1 3/8 M33
710 18 450 58.8 533 24 457 533.4 2 628.6 1 1/4 195 170 1 3/8 M33
775 20 500 62 587 24 508 584.2 2 685.8 1 1/4 205 185 1 3/8 M33
915 24 600 68.3 702 24 610 692.2 2 812.8 1 1/2 230 205 1 5/8 M39

400 LBS LWN Flange Dimensions

Size in mm Size in Inch Outer Diameter Weld Neck Outer Diameter Flange Thick. Hub Outer Diameter RF Dia. RF Height PCD Bolt Size UNC RF Stud Length No of Bolts Hole Size ISO Stud Size
15 1/2 95 21.3 14.3 38 34.9 7 66.7 1/2 75 4 5/8 M14
20 3/4 115 26.7 15.9 48 42.9 7 82.6 5/8 90 4 3/4 M16
25 1 125 33.4 17.5 54 50.8 7 88.9 5/8 90 4 3/4 M16
32 1 1/4 135 42.2 20.7 64 63.5 7 98.4 5/8 95 4 3/4 M16
40 1 1/2 155 48.3 22.3 70 73 7 114.3 3/4 110 4 7/8 M20
50 2 165 60.3 25.4 84 92.1 7 127 5/8 110 8 3/4 M16
65 2 1/2 190 73 28.6 100 104.8 7 149.2 3/4 120 8 7/8 M20
80 3 210 88.9 31.8 117 127 7 168.3 3/4 125 8 7/8 M20
90 3 1/2 230 101.6 35 133 N/A 7 184.2 7/8 140 8 1 M24
100 4 255 114.3 35 146 157.2 7 200 7/8 140 8 1 M24
125 5 280 141.3 38.1 178 185.7 7 235 7/8 145 8 1 M24
150 6 320 168.3 41.3 206 215.9 7 269.9 7/8 150 12 1 M24
200 8 380 219.1 47.7 260 269.9 7 330 1 170 12 1 1/8 M27
250 10 445 273 54 321 323.8 7 387.4 1 1/8 190 16 1 1/4 M30
300 12 520 323.8 57.2 375 381 7 450.8 1 1/4 205 16 1 3/8 M33
350 14 585 355.6 60.4 425 412.8 7 514.4 1 1/4 210 20 1 3/8 M33
400 16 650 406.4 63.5 483 469.9 7 571.5 1 3/8 220 20 1 1/2 M36
450 18 710 457 66.7 533 533.4 7 628.6 1 3/8 230 24 1 1/2 M36
500 20 775 508 69.9 587 584.2 7 685.8 1 1/2 240 24 1 3/4 M39
600 24 915 610 76.2 702 692.2 7 812.8 1 3/4 265 24 1 7/8 M45

Class 600 Long Weld Neck Flange

Size in mm Size in Inch Outer Diameter Hub Outer Diameter Flange Thickness RF Height Weld Neck Outer Diameter RF Dia. PCD Bolt Size UNC RF Stud Length No of Bolts Hole Size ISO Stud Size
15 1/2 95 38 14.3 7 21.3 34.9 66.7 1/2 75 4 5/8 M14
20 3/4 115 48 15.9 7 26.7 42.9 82.6 5/8 90 4 3/4 M16
25 1 125 54 17.5 7 33.4 50.8 88.9 5/8 90 4 3/4 M16
32 1 1/4 135 64 20.7 7 42.2 63.5 98.4 5/8 95 4 3/4 M16
40 1 1/2 155 70 22.3 7 48.3 73 114.3 3/4 110 4 7/8 M20
50 2 165 84 25.4 7 60.3 92.1 127 5/8 110 8 3/4 M16
65 2 1/2 190 100 28.6 7 73 104.8 149.2 3/4 120 8 7/8 M20
80 3 210 117 31.8 7 88.9 127 168.3 3/4 125 8 7/8 M20
90 3 1/2 230 133 35 7 101.6 N/A 184.2 7/8 140 8 1 M24
100 4 275 152 38.1 7 114.3 157.2 215.9 7/8 145 8 1 M24
125 5 330 189 44.5 7 141.3 185.7 266.7 1 165 8 1 1/8 M27
150 6 355 222 47.7 7 168.3 215.9 292.1 1 170 12 1 1/8 M27
200 8 420 273 55.6 7 219.1 269.9 349.2 1 1/8 190 12 1 1/4 M30
250 10 510 343 63.5 7 273 323.8 431.8 1 1/4 215 16 1 3/8 M33
300 12 560 400 66.7 7 323.8 381 489 1 1/4 220 20 1 3/8 M33
350 14 605 432 69.9 7 355.6 412.8 527 1 3/8 235 20 1 1/2 M36
400 16 685 495 76.2 7 406.4 469.9 603.2 1 1/2 255 20 1 5/8 M39
450 18 745 546 82.6 7 457 533.4 654 1 5/8 275 20 1 3/4 M42
500 20 815 610 88.9 7 508 584.2 723.9 1 5/8 285 24 1 3/4 M42

CL 900 SS LWN Flanges Dimensions

Outer Diameter Size in Inch Size in mm Flange Thick. Hub Outer Diameter RF Stud Length Weld Neck Outer Diameter RF Height PCD No of Bolts RF Dia. Bolt Size UNC Hole Size ISO Stud Size
120 1/2 15 22.3 38 110 21.3 7 82.6 4 34.9 3/4 7/8 M20
130 3/4 20 25.4 44 115 26.7 7 88.9 4 42.9 3/4 7/8 M20
150 1 25 28.6 52 125 33.4 7 101.6 4 50.8 7/8 1 M24
160 1 1/4 32 28.6 64 125 42.2 7 111.1 4 63.5 7/8 1 M24
180 1 1/2 40 31.8 70 140 48.3 7 123.8 4 73 1 1 1/8 M27
215 2 50 38.1 105 145 60.3 7 165.1 8 92.1 7/8 1 M24
245 2 1/2 65 41.3 124 160 73 7 190.5 8 104.8 1 1 1/8 M27
240 3 80 38.1 127 145 88.9 7 190.5 8 127 7/8 1 M24
290 4 100 44.5 159 170 114.3 7 235 8 157.2 1 1/8 1 1/4 M30
350 5 125 50.8 190 190 141.3 7 279.4 8 185.7 1 1/4 1 3/8 M33
380 6 150 55.6 235 190 168.3 7 317.5 12 215.9 1 1/8 1 1/4 M30
470 8 200 63.5 298 220 219.1 7 393.7 12 269.9 1 3/8 1 1/2 M36
545 10 250 69.9 368 235 273 7 469.9 16 323.8 1 3/8 1 1/2 M36
610 12 300 79.4 419 255 323.8 7 533.4 20 381 1 3/8 1 1/2 M36
640 14 350 85.8 451 275 355.6 7 558.8 20 412.8 1 1/2 1 5/8 M39
705 16 400 88.9 508 285 406.4 7 616 20 469.9 1 5/8 1 3/4 M42
785 18 450 101.6 565 325 457 7 685.8 20 533.4 1 7/8 2 M48
855 20 500 108 622 350 508 7 749.3 20 584.2 2 2 1/8 M52
1040 24 600 139.7 749 440 610 7 901.7 20 692.2 2 1/2 2 5/8 M64

Long Weld Neck Flange 1500# Dimensions

Size in mm Size in Inch Hub Outer Diameter Outer Diameter Flange Thick. Weld Neck Outer Diameter RF Height PCD No of Bolts RF Dia. Bolt Size UNC RF Stud Length Hole Size ISO Stud Size
15 1/2 38 120 22.3 21.3 7 82.6 4 34.9 3/4 110 7/8 M20
20 3/4 44 130 25.4 26.7 7 88.9 4 42.9 3/4 115 7/8 M20
25 1 52 150 28.6 33.4 7 101.6 4 50.8 7/8 125 1 M24
32 1 1/4 64 160 28.6 42.2 7 111.1 4 63.5 7/8 125 1 M24
40 1 1/2 70 180 31.8 48.3 7 123.8 4 73 1 140 1 1/8 M27
50 2 105 215 38.1 60.3 7 165.1 8 92.1 7/8 145 1 M24
65 2 1/2 124 245 41.3 73 7 190.5 8 104.8 1 160 1 1/8 M27
80 3 133 265 47.7 88.9 7 203.2 8 127 1 1/8 180 1 1/4 M30
100 4 162 310 54 114.3 7 241.3 8 157.2 1 1/4 195 1 3/8 M33
125 5 197 375 73.1 141.3 7 292.1 8 185.7 1 1/2 250 1 5/8 M39
150 6 229 395 82.6 168.3 7 317.5 12 215.9 1 3/8 260 1 1/2 M36
200 8 292 485 92.1 219.1 7 393.7 12 269.9 1 5/8 290 1 3/4 M42
250 10 368 585 108 273 7 482.6 12 323.8 1 7/8 335 2 M48
300 12 451 675 123.9 323.8 7 571.5 16 381 2 375 2 1/8 M52
350 14 495 750 133.4 355.6 7 635 16 412.8 2 1/4 405 2 3/8 M56
400 16 552 825 146.1 406.4 7 704.8 16 469.9 2 1/2 445 2 5/8 M64
450 18 597 915 162 457 7 774.7 16 533.4 2 3/4 495 2 7/8 M72
500 20 641 985 177.8 508 7 831.8 16 584.2 3 540 3 1/8 M76
600 24 762 1170 203.2 610 7 990.6 16 692.2 3 1/2 615 3 5/8 M90

Raised Face 2500 LBS Long Weld Neck Flange Dimensions

Size in mm Size in Inch Weld Neck OD Outer Dia. Hub OD RF Dia. Flange Thick. RF Height PCD No of Bolts RF Stud Length Hole Size Bolt Size UNC ISO Stud Size
15 1/2 21.3 135 43 34.9 30.2 7 88.9 4 120 7/8 3/4 M20
20 3/4 26.7 140 51 42.9 31.8 7 95.2 4 125 7/8 3/4 M20
25 1 33.4 160 57 50.8 35 7 108 4 140 1 7/8 M24
32 1 1/4 42.2 185 73 63.5 38.1 7 130.2 4 150 1 1/8 1 M27
40 1 1/2 48.3 205 79 73 44.5 7 146 4 170 1 1/4 1 1/8 M30
50 2 60.3 235 95 92.1 50.9 7 171.4 8 180 1 1/8 1 M27
65 2 1/2 73 265 114 104.8 57.2 7 196.8 8 195 1 1/4 1 1/8 M30
80 3 88.9 305 133 127 66.7 7 228.6 8 220 1 3/8 1 1/4 M33
100 4 114.3 355 165 157.2 76.2 7 273 8 255 1 5/8 1 1/2 M39
125 5 141.3 420 203 185.7 92.1 7 323.8 8 300 1 7/8 1 3/4 M45
150 6 168.3 485 235 215.9 108 7 368.3 8 345 2 1/8 2 M52
200 8 219.1 550 305 269.9 127 7 438.2 12 380 2 1/8 2 M52
250 10 273 675 375 323.8 165.1 7 539.8 12 490 2 5/8 2 1/2 M64
300 12 323.8 760 441 381 184.2 7 619.1 12 540 2 7/8 2 3/4 M72

Get Self Reinforced LWN Flange Suppliers for specific design, We offer custom size of Heavy Barrel Long Weld Neck Flange for leak-free connections.

80% repeat orders from below countries

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Orgi Chemie Fz LLC- UAE

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