Omaa Metal Sources is ASME B16.5 Long Welding Neck Flange Exporters and Suppliers in the US, UK, South Africa, Saudi Arabia, Singapore, UAE, Oman, South Korea, Turkey, Bahrain, Malaysia, Philippines, Thailand, Norway, Indonesia, Iraq, Yemen, Bangladesh, Nigeria, Egypt, Peru, Ghana, Morocco, Etc.
Long Weld Neck Flange Manufacturers and Suppliers in India, ANSI B16.5 LWN Flange, ASME B16.47 RFLWN Flange, Dimensions, Weight Chart, Thickness Chart
Long weld neck flanges are a type of weld neck flange that have a long and tapered neck. The neck length of a long weld neck flange is typically about twice the diameter of the flange, and it is designed to provide a smooth transition from the flange to the pipe. The long neck also helps to distribute stresses more evenly across the flange and the pipe, making it a suitable choice for high-pressure and high-temperature applications.
Long weld neck flanges are commonly used in industries such as oil and gas, chemical processing, and power generation. They are also used in applications where there is a need for precise alignment of piping systems, such as in aerospace and automotive industries.
The long neck of the flange allows for a greater degree of flexibility in the design of piping systems, as it can be used to offset misalignments and accommodate thermal expansion and contraction. The long neck also allows for easy welding, as it provides a clear and unobstructed view of the weld joint.
Like other types of weld neck flanges, long weld neck flanges are available in a range of materials, including carbon steel, stainless steel, and various alloys. The choice of material will depend on the specific application and the requirements for strength, corrosion resistance, and other properties.
ASTM A105 Long Weld Neck Flange, Carbon Steel Long Forged Weld Neck Flanges, Galvanized Long Weld Neck Nozzle, Inconel 600 Heavy Barrel Long Weld Neck Flange, MS RTJ Long Weld Neck Flange, Titanium LWN Flange, Sch 80 Schedule 40 Stainless Steel 304, 304L, 316, 316L, and 904L Raised Face Long Weld Neck Flange at the Lowest Prices.
Long Weld Neck Flange Specifications
Size Range
1/2″ (15 NB) to 48″ (1200NB)
Class / Pressure Rating
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64
Standards / Dimensions
ANSI/ASME B16.5, B16.47 Series A & B, B16.48, JIS B2220, BS 4504, BS 10, BS1560-3.1, EN-1092, DIN, AS, GOST, MSS SP-44, ISO 70051, API7S-15, API7S-43, API605, AWWA, DIN
Connection Type
Ring Joint Flange (RTJ), Flat Face Flange (FF), Raised Face Flange (RF), Male and Female Flange (M & F), Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)
Material Standards
ASTM A105, ASTM A350, ASTM A182, ASTM A216, ASTM A352, ASTM A217, ASTM A515, ASTM A516, ASTM A203, A204, ASTM A387, ASTM A240, ASTM A694 Long Weld Neck Flange
Long Weld Neck Flange Materials & Grades
| ASTM A182 Long Weld Neck Flange |
|---|
| Stainless Steel 304, 304L, 316, 316L, 316H, 316Ti, 310, 310S, 317, 317L, 321, 347, 347H, 904L, SMO 254/6Mo, Duplex Steel-S31803/S32205, Super Duplex-S32750/S32760 F51, F52, F53, F54, F55, F57, F59, F60, F61, Alloy Steel F1, F5, F9, F11, F12, F22, F91 |
| ASTM B564 Long Weld Neck Flange |
|---|
| Incoloy 800, 800H, 800HT, 825, 925, Inconel 600, 601, 625, 718, 783, 690, X750, Nickel 200, 201, 205, 205LC, Hastelloy C276, C22, C4, C2000, B2, B3, X, Monel 400, 500 |
| ASTM A105 / A105N / A350 LF2 / A694 Long Weld Neck Flange |
|---|
| Carbon Steel F52, F56, F60, F65, F70, F80 |
| ASTM B247 Long Weld Neck Flange |
|---|
| Aluminium 7075, 5086, 6082, 3003, 5083, 6061, 1100 |
| ASTM B61 / B62 / B151 / B152 Long Weld Neck Flange |
|---|
| Copper Nickel 90/10 (C70600 ), 70/30 (C71500), UNS C71640 |
| ASTM B381 Long Weld Neck Flange |
|---|
| Titanium Grade 1, Grade 2, Grade 3, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 12 |
Find the largest ready stock of Heavy Barrel Long Weld Neck Flange, Long Forged Weld Neck Flanges, API 5000, API 6A, BS10, Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500, EN 1092-1 Type 11, Table E, Table H, Table D, Series B, ISO, JIS 5k 10k 16k 20k, DIN, DN50, DN40, DN80, DN300, DIN 2632/2633/2635, Flat Face, Tongue and Groove, Raised Face, RTJ Face, Orifice, Pn6 Pn10 Pn16 Pn25 Pn40, Long Weld Neck Nozzle, Raised Face Long Weld Neck Flange in Mumbai, India.
ASME B16.5 Long Weld Neck Flange Dimensions
Class 2500 Long Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Weld Neck OD | RF Dia. | RF Height | PCD | Hub Length | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | |||||||
| 1/2 | 15 | 135 | 30.2 | 43 | 21.3 | 34.9 | 7 | 88.9 | as per requirement | 4 | 3/4 | 120 | 7/8 | M20 |
| 3/4 | 20 | 140 | 31.8 | 51 | 26.7 | 42.9 | 7 | 95.2 | as per requirement | 4 | 3/4 | 125 | 7/8 | M20 |
| 1 | 25 | 160 | 35 | 57 | 33.4 | 50.8 | 7 | 108 | as per requirement | 4 | 7/8 | 140 | 1 | M24 |
| 1 1/4 | 32 | 185 | 38.1 | 73 | 42.2 | 63.5 | 7 | 130.2 | as per requirement | 4 | 1 | 150 | 1 1/8 | M27 |
| 1 1/2 | 40 | 205 | 44.5 | 79 | 48.3 | 73 | 7 | 146 | as per requirement | 4 | 1 1/8 | 170 | 1 1/4 | M30 |
| 2 | 50 | 235 | 50.9 | 95 | 60.3 | 92.1 | 7 | 171.4 | as per requirement | 8 | 1 | 180 | 1 1/8 | M27 |
| 2 1/2 | 65 | 265 | 57.2 | 114 | 73 | 104.8 | 7 | 196.8 | as per requirement | 8 | 1 1/8 | 195 | 1 1/4 | M30 |
| 3 | 80 | 305 | 66.7 | 133 | 88.9 | 127 | 7 | 228.6 | as per requirement | 8 | 1 1/4 | 220 | 1 3/8 | M33 |
| 4 | 100 | 355 | 76.2 | 165 | 114.3 | 157.2 | 7 | 273 | as per requirement | 8 | 1 1/2 | 255 | 1 5/8 | M39 |
| 5 | 125 | 420 | 92.1 | 203 | 141.3 | 185.7 | 7 | 323.8 | as per requirement | 8 | 1 3/4 | 300 | 1 7/8 | M45 |
| 6 | 150 | 485 | 108 | 235 | 168.3 | 215.9 | 7 | 368.3 | as per requirement | 8 | 2 | 345 | 2 1/8 | M52 |
| 8 | 200 | 550 | 127 | 305 | 219.1 | 269.9 | 7 | 438.2 | as per requirement | 12 | 2 | 380 | 2 1/8 | M52 |
| 10 | 250 | 675 | 165.1 | 375 | 273 | 323.8 | 7 | 539.8 | as per requirement | 12 | 2 1/2 | 490 | 2 5/8 | M64 |
| 12 | 300 | 760 | 184.2 | 441 | 323.8 | 381 | 7 | 619.1 | as per requirement | 12 | 2 3/4 | 540 | 2 7/8 | M72 |
Class 1500 Long Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Weld Neck OD | RF Dia. | RF Height | PCD | Hub Length | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | |||||||
| 1/2 | 15 | 120 | 22.3 | 38 | 21.3 | 34.9 | 7 | 82.6 | as per requirement | 4 | 3/4 | 110 | 7/8 | M20 |
| 3/4 | 20 | 130 | 25.4 | 44 | 26.7 | 42.9 | 7 | 88.9 | as per requirement | 4 | 3/4 | 115 | 7/8 | M20 |
| 1 | 25 | 150 | 28.6 | 52 | 33.4 | 50.8 | 7 | 101.6 | as per requirement | 4 | 7/8 | 125 | 1 | M24 |
| 1 1/4 | 32 | 160 | 28.6 | 64 | 42.2 | 63.5 | 7 | 111.1 | as per requirement | 4 | 7/8 | 125 | 1 | M24 |
| 1 1/2 | 40 | 180 | 31.8 | 70 | 48.3 | 73 | 7 | 123.8 | as per requirement | 4 | 1 | 140 | 1 1/8 | M27 |
| 2 | 50 | 215 | 38.1 | 105 | 60.3 | 92.1 | 7 | 165.1 | as per requirement | 8 | 7/8 | 145 | 1 | M24 |
| 2 1/2 | 65 | 245 | 41.3 | 124 | 73 | 104.8 | 7 | 190.5 | as per requirement | 8 | 1 | 160 | 1 1/8 | M27 |
| 3 | 80 | 265 | 47.7 | 133 | 88.9 | 127 | 7 | 203.2 | as per requirement | 8 | 1 1/8 | 180 | 1 1/4 | M30 |
| 4 | 100 | 310 | 54 | 162 | 114.3 | 157.2 | 7 | 241.3 | as per requirement | 8 | 1 1/4 | 195 | 1 3/8 | M33 |
| 5 | 125 | 375 | 73.1 | 197 | 141.3 | 185.7 | 7 | 292.1 | as per requirement | 8 | 1 1/2 | 250 | 1 5/8 | M39 |
| 6 | 150 | 395 | 82.6 | 229 | 168.3 | 215.9 | 7 | 317.5 | as per requirement | 12 | 1 3/8 | 260 | 1 1/2 | M36 |
| 8 | 200 | 485 | 92.1 | 292 | 219.1 | 269.9 | 7 | 393.7 | as per requirement | 12 | 1 5/8 | 290 | 1 3/4 | M42 |
| 10 | 250 | 585 | 108 | 368 | 273 | 323.8 | 7 | 482.6 | as per requirement | 12 | 1 7/8 | 335 | 2 | M48 |
| 12 | 300 | 675 | 123.9 | 451 | 323.8 | 381 | 7 | 571.5 | as per requirement | 16 | 2 | 375 | 2 1/8 | M52 |
| 14 | 350 | 750 | 133.4 | 495 | 355.6 | 412.8 | 7 | 635 | as per requirement | 16 | 2 1/4 | 405 | 2 3/8 | M56 |
| 16 | 400 | 825 | 146.1 | 552 | 406.4 | 469.9 | 7 | 704.8 | as per requirement | 16 | 2 1/2 | 445 | 2 5/8 | M64 |
| 18 | 450 | 915 | 162 | 597 | 457 | 533.4 | 7 | 774.7 | as per requirement | 16 | 2 3/4 | 495 | 2 7/8 | M72 |
| 20 | 500 | 985 | 177.8 | 641 | 508 | 584.2 | 7 | 831.8 | as per requirement | 16 | 3 | 540 | 3 1/8 | M76 |
| 24 | 600 | 1170 | 203.2 | 762 | 610 | 692.2 | 7 | 990.6 | as per requirement | 16 | 3 1/2 | 615 | 3 5/8 | M90 |
Class 900 Long Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Weld Neck OD | RF Dia. | RF Height | PCD | Hub Length | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | |||||||
| 1/2 | 15 | 120 | 22.3 | 38 | 21.3 | 34.9 | 7 | 82.6 | as per requirement | 4 | 3/4 | 110 | 7/8 | M20 |
| 3/4 | 20 | 130 | 25.4 | 44 | 26.7 | 42.9 | 7 | 88.9 | as per requirement | 4 | 3/4 | 115 | 7/8 | M20 |
| 1 | 25 | 150 | 28.6 | 52 | 33.4 | 50.8 | 7 | 101.6 | as per requirement | 4 | 7/8 | 125 | 1 | M24 |
| 1 1/4 | 32 | 160 | 28.6 | 64 | 42.2 | 63.5 | 7 | 111.1 | as per requirement | 4 | 7/8 | 125 | 1 | M24 |
| 1 1/2 | 40 | 180 | 31.8 | 70 | 48.3 | 73 | 7 | 123.8 | as per requirement | 4 | 1 | 140 | 1 1/8 | M27 |
| 2 | 50 | 215 | 38.1 | 105 | 60.3 | 92.1 | 7 | 165.1 | as per requirement | 8 | 7/8 | 145 | 1 | M24 |
| 2 1/2 | 65 | 245 | 41.3 | 124 | 73 | 104.8 | 7 | 190.5 | as per requirement | 8 | 1 | 160 | 1 1/8 | M27 |
| 3 | 80 | 240 | 38.1 | 127 | 88.9 | 127 | 7 | 190.5 | as per requirement | 8 | 7/8 | 145 | 1 | M24 |
| 4 | 100 | 290 | 44.5 | 159 | 114.3 | 157.2 | 7 | 235 | as per requirement | 8 | 1 1/8 | 170 | 1 1/4 | M30 |
| 5 | 125 | 350 | 50.8 | 190 | 141.3 | 185.7 | 7 | 279.4 | as per requirement | 8 | 1 1/4 | 190 | 1 3/8 | M33 |
| 6 | 150 | 380 | 55.6 | 235 | 168.3 | 215.9 | 7 | 317.5 | as per requirement | 12 | 1 1/8 | 190 | 1 1/4 | M30 |
| 8 | 200 | 470 | 63.5 | 298 | 219.1 | 269.9 | 7 | 393.7 | as per requirement | 12 | 1 3/8 | 220 | 1 1/2 | M36 |
| 10 | 250 | 545 | 69.9 | 368 | 273 | 323.8 | 7 | 469.9 | as per requirement | 16 | 1 3/8 | 235 | 1 1/2 | M36 |
| 12 | 300 | 610 | 79.4 | 419 | 323.8 | 381 | 7 | 533.4 | as per requirement | 20 | 1 3/8 | 255 | 1 1/2 | M36 |
| 14 | 350 | 640 | 85.8 | 451 | 355.6 | 412.8 | 7 | 558.8 | as per requirement | 20 | 1 1/2 | 275 | 1 5/8 | M39 |
| 16 | 400 | 705 | 88.9 | 508 | 406.4 | 469.9 | 7 | 616 | as per requirement | 20 | 1 5/8 | 285 | 1 3/4 | M42 |
| 18 | 450 | 785 | 101.6 | 565 | 457 | 533.4 | 7 | 685.8 | as per requirement | 20 | 1 7/8 | 325 | 2 | M48 |
| 20 | 500 | 855 | 108 | 622 | 508 | 584.2 | 7 | 749.3 | as per requirement | 20 | 2 | 350 | 2 1/8 | M52 |
| 24 | 600 | 1040 | 139.7 | 749 | 610 | 692.2 | 7 | 901.7 | as per requirement | 20 | 2 1/2 | 440 | 2 5/8 | M64 |
Class 600 Long Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Weld Neck OD | RF Dia. | RF Height | PCD | Hub Length | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | |||||||
| 1/2 | 15 | 95 | 14.3 | 38 | 21.3 | 34.9 | 7 | 66.7 | as per requirement | 4 | 1/2 | 75 | 5/8 | M14 |
| 3/4 | 20 | 115 | 15.9 | 48 | 26.7 | 42.9 | 7 | 82.6 | as per requirement | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 | 25 | 125 | 17.5 | 54 | 33.4 | 50.8 | 7 | 88.9 | as per requirement | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 1/4 | 32 | 135 | 20.7 | 64 | 42.2 | 63.5 | 7 | 98.4 | as per requirement | 4 | 5/8 | 95 | 3/4 | M16 |
| 1 1/2 | 40 | 155 | 22.3 | 70 | 48.3 | 73 | 7 | 114.3 | as per requirement | 4 | 3/4 | 110 | 7/8 | M20 |
| 2 | 50 | 165 | 25.4 | 84 | 60.3 | 92.1 | 7 | 127 | as per requirement | 8 | 5/8 | 110 | 3/4 | M16 |
| 2 1/2 | 65 | 190 | 28.6 | 100 | 73 | 104.8 | 7 | 149.2 | as per requirement | 8 | 3/4 | 120 | 7/8 | M20 |
| 3 | 80 | 210 | 31.8 | 117 | 88.9 | 127 | 7 | 168.3 | as per requirement | 8 | 3/4 | 125 | 7/8 | M20 |
| 3 1/2 | 90 | 230 | 35 | 133 | 101.6 | N/A | 7 | 184.2 | as per requirement | 8 | 7/8 | 140 | 1 | M24 |
| 4 | 100 | 275 | 38.1 | 152 | 114.3 | 157.2 | 7 | 215.9 | as per requirement | 8 | 7/8 | 145 | 1 | M24 |
| 5 | 125 | 330 | 44.5 | 189 | 141.3 | 185.7 | 7 | 266.7 | as per requirement | 8 | 1 | 165 | 1 1/8 | M27 |
| 6 | 150 | 355 | 47.7 | 222 | 168.3 | 215.9 | 7 | 292.1 | as per requirement | 12 | 1 | 170 | 1 1/8 | M27 |
| 8 | 200 | 420 | 55.6 | 273 | 219.1 | 269.9 | 7 | 349.2 | as per requirement | 12 | 1 1/8 | 190 | 1 1/4 | M30 |
| 10 | 250 | 510 | 63.5 | 343 | 273 | 323.8 | 7 | 431.8 | as per requirement | 16 | 1 1/4 | 215 | 1 3/8 | M33 |
| 12 | 300 | 560 | 66.7 | 400 | 323.8 | 381 | 7 | 489 | as per requirement | 20 | 1 1/4 | 220 | 1 3/8 | M33 |
| 14 | 350 | 605 | 69.9 | 432 | 355.6 | 412.8 | 7 | 527 | as per requirement | 20 | 1 3/8 | 235 | 1 1/2 | M36 |
| 16 | 400 | 685 | 76.2 | 495 | 406.4 | 469.9 | 7 | 603.2 | as per requirement | 20 | 1 1/2 | 255 | 1 5/8 | M39 |
| 18 | 450 | 745 | 82.6 | 546 | 457 | 533.4 | 7 | 654 | as per requirement | 20 | 1 5/8 | 275 | 1 3/4 | M42 |
| 20 | 500 | 815 | 88.9 | 610 | 508 | 584.2 | 7 | 723.9 | as per requirement | 24 | 1 5/8 | 285 | 1 3/4 | M42 |
Class 400 Long Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Weld Neck OD | RF Dia. | RF Height | PCD | Hub Length | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | |||||||
| 1/2 | 15 | 95 | 14.3 | 38 | 21.3 | 34.9 | 7 | 66.7 | as per requirement | 4 | 1/2 | 75 | 5/8 | M14 |
| 3/4 | 20 | 115 | 15.9 | 48 | 26.7 | 42.9 | 7 | 82.6 | as per requirement | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 | 25 | 125 | 17.5 | 54 | 33.4 | 50.8 | 7 | 88.9 | as per requirement | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 1/4 | 32 | 135 | 20.7 | 64 | 42.2 | 63.5 | 7 | 98.4 | as per requirement | 4 | 5/8 | 95 | 3/4 | M16 |
| 1 1/2 | 40 | 155 | 22.3 | 70 | 48.3 | 73 | 7 | 114.3 | as per requirement | 4 | 3/4 | 110 | 7/8 | M20 |
| 2 | 50 | 165 | 25.4 | 84 | 60.3 | 92.1 | 7 | 127 | as per requirement | 8 | 5/8 | 110 | 3/4 | M16 |
| 2 1/2 | 65 | 190 | 28.6 | 100 | 73 | 104.8 | 7 | 149.2 | as per requirement | 8 | 3/4 | 120 | 7/8 | M20 |
| 3 | 80 | 210 | 31.8 | 117 | 88.9 | 127 | 7 | 168.3 | as per requirement | 8 | 3/4 | 125 | 7/8 | M20 |
| 3 1/2 | 90 | 230 | 35 | 133 | 101.6 | N/A | 7 | 184.2 | as per requirement | 8 | 7/8 | 140 | 1 | M24 |
| 4 | 100 | 255 | 35 | 146 | 114.3 | 157.2 | 7 | 200 | as per requirement | 8 | 7/8 | 140 | 1 | M24 |
| 5 | 125 | 280 | 38.1 | 178 | 141.3 | 185.7 | 7 | 235 | as per requirement | 8 | 7/8 | 145 | 1 | M24 |
| 6 | 150 | 320 | 41.3 | 206 | 168.3 | 215.9 | 7 | 269.9 | as per requirement | 12 | 7/8 | 150 | 1 | M24 |
| 8 | 200 | 380 | 47.7 | 260 | 219.1 | 269.9 | 7 | 330 | as per requirement | 12 | 1 | 170 | 1 1/8 | M27 |
| 10 | 250 | 445 | 54 | 321 | 273 | 323.8 | 7 | 387.4 | as per requirement | 16 | 1 1/8 | 190 | 1 1/4 | M30 |
| 12 | 300 | 520 | 57.2 | 375 | 323.8 | 381 | 7 | 450.8 | as per requirement | 16 | 1 1/4 | 205 | 1 3/8 | M33 |
| 14 | 350 | 585 | 60.4 | 425 | 355.6 | 412.8 | 7 | 514.4 | as per requirement | 20 | 1 1/4 | 210 | 1 3/8 | M33 |
| 16 | 400 | 650 | 63.5 | 483 | 406.4 | 469.9 | 7 | 571.5 | as per requirement | 20 | 1 3/8 | 220 | 1 1/2 | M36 |
| 18 | 450 | 710 | 66.7 | 533 | 457 | 533.4 | 7 | 628.6 | as per requirement | 24 | 1 3/8 | 230 | 1 1/2 | M36 |
| 20 | 500 | 775 | 69.9 | 587 | 508 | 584.2 | 7 | 685.8 | as per requirement | 24 | 1 1/2 | 240 | 1 3/4 | M39 |
| 24 | 600 | 915 | 76.2 | 702 | 610 | 692.2 | 7 | 812.8 | as per requirement | 24 | 1 3/4 | 265 | 1 7/8 | M45 |
Class 300 Long Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Weld Neck OD | RF Dia. | RF Height | PCD | Hub Length | No of Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | ISO Stud Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | ||||||||
| 1/2 | 15 | 95 | 12.7 | 38 | 21.3 | 34.9 | 2 | 66.7 | As Required | 4 | 1/2 | 55 | 65 | 5/8 | M14 |
| 3/4 | 20 | 115 | 14.3 | 48 | 26.7 | 42.9 | 2 | 82.6 | As Required | 4 | 5/8 | 65 | 75 | 3/4 | M16 |
| 1 | 25 | 125 | 15.9 | 54 | 33.4 | 50.8 | 2 | 88.9 | As Required | 4 | 5/8 | 65 | 75 | 3/4 | M16 |
| 1 1/4 | 32 | 135 | 17.5 | 64 | 42.2 | 63.5 | 2 | 98.4 | As Required | 4 | 5/8 | 70 | 85 | 3/4 | M16 |
| 1 1/2 | 40 | 155 | 19.1 | 70 | 48.3 | 73 | 2 | 114.3 | As Required | 4 | 3/4 | 75 | 90 | 7/8 | M20 |
| 2 | 50 | 165 | 20.7 | 84 | 60.3 | 92.1 | 2 | 127 | As Required | 8 | 5/8 | 75 | 90 | 3/4 | M16 |
| 2 1/2 | 65 | 190 | 23.9 | 100 | 73 | 104.8 | 2 | 149.2 | As Required | 8 | 3/4 | 85 | 100 | 7/8 | M20 |
| 3 | 80 | 210 | 27 | 117 | 88.9 | 127 | 2 | 168.3 | As Required | 8 | 3/4 | 90 | 110 | 7/8 | M20 |
| 3 1/2 | 90 | 230 | 28.6 | 133 | 101.6 | 139.7 | 2 | 184.2 | As Required | 8 | 3/4 | 95 | 110 | 7/8 | M20 |
| 4 | 100 | 255 | 30.2 | 146 | 114.3 | 157.2 | 2 | 200 | As Required | 8 | 3/4 | 95 | 115 | 7/8 | M20 |
| 5 | 125 | 280 | 33.4 | 178 | 141.3 | 185.7 | 2 | 235 | As Required | 8 | 3/4 | 110 | 120 | 7/8 | M20 |
| 6 | 150 | 320 | 35 | 206 | 168.3 | 215.9 | 2 | 269.9 | As Required | 12 | 3/4 | 110 | 120 | 7/8 | M20 |
| 8 | 200 | 380 | 39.7 | 260 | 219.1 | 269.9 | 2 | 330.2 | As Required | 12 | 7/8 | 120 | 140 | 1 | M24 |
| 10 | 250 | 445 | 46.1 | 321 | 273 | 323.8 | 2 | 387.4 | As Required | 16 | 1 | 140 | 160 | 1 1/8 | M27 |
| 12 | 300 | 520 | 49.3 | 375 | 323.8 | 381 | 2 | 450.8 | As Required | 16 | 1 1/8 | 145 | 170 | 1 1/4 | M30 |
| 14 | 350 | 585 | 52.4 | 425 | 355.6 | 412.8 | 2 | 514.4 | As Required | 20 | 1 1/8 | 160 | 180 | 1 1/4 | M30 |
| 16 | 400 | 650 | 55.6 | 483 | 406.4 | 469.9 | 2 | 571.5 | As Required | 20 | 1 1/4 | 165 | 190 | 1 3/8 | M33 |
| 18 | 450 | 710 | 58.8 | 533 | 457 | 533.4 | 2 | 628.6 | As Required | 24 | 1 1/4 | 170 | 195 | 1 3/8 | M33 |
| 20 | 500 | 775 | 62 | 587 | 508 | 584.2 | 2 | 685.8 | As Required | 24 | 1 1/4 | 185 | 205 | 1 3/8 | M33 |
| 24 | 600 | 915 | 68.3 | 702 | 610 | 692.2 | 2 | 812.8 | As Required | 24 | 1 1/2 | 205 | 230 | 1 5/8 | M39 |
Class 150 Long Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Weld Neck OD | RF Dia. | RF Height | PCD | Hub Length | No of Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | ISO Stud Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | As Required | 4 | 1/2 | 50 | 65 | 5/8 | M14 |
| 1 | 25 | 110 | 12.7 | 49 | 33.4 | 50.8 | 2 | 79.4 | As Required | 4 | 1/2 | 55 | 65 | 5/8 | M14 |
| 1 1/4 | 32 | 115 | 14.3 | 59 | 42.2 | 63.5 | 2 | 88.9 | As Required | 4 | 1/2 | 55 | 70 | 5/8 | M14 |
| 1 1/2 | 40 | 125 | 15.9 | 65 | 48.3 | 73 | 2 | 98.4 | As Required | 4 | 1/2 | 65 | 70 | 5/8 | M14 |
| 2 | 50 | 150 | 17.5 | 78 | 60.3 | 92.1 | 2 | 120.7 | As Required | 4 | 5/8 | 70 | 85 | 3/4 | M16 |
| 2 1/2 | 65 | 180 | 20.7 | 90 | 73 | 104.8 | 2 | 139.7 | As Required | 4 | 5/8 | 75 | 90 | 3/4 | M16 |
| 3 | 80 | 190 | 22.3 | 108 | 88.9 | 127 | 2 | 152.4 | As Required | 4 | 5/8 | 75 | 90 | 3/4 | M16 |
| 3 1/2 | 90 | 215 | 22.3 | 122 | 101.6 | 139.7 | 2 | 177.8 | As Required | 8 | 5/8 | 75 | 90 | 3/4 | M16 |
| 4 | 100 | 230 | 22.3 | 135 | 114.3 | 157.2 | 2 | 190.5 | As Required | 8 | 5/8 | 75 | 90 | 3/4 | M16 |
| 5 | 125 | 255 | 22.3 | 164 | 141.3 | 185.7 | 2 | 215.9 | As Required | 8 | 3/4 | 85 | 95 | 7/8 | M20 |
| 6 | 150 | 280 | 23.9 | 192 | 168.3 | 215.9 | 2 | 241.3 | As Required | 8 | 3/4 | 85 | 100 | 7/8 | M20 |
| 8 | 200 | 345 | 27 | 246 | 219.1 | 269.9 | 2 | 298.5 | As Required | 8 | 3/4 | 90 | 110 | 7/8 | M20 |
| 10 | 250 | 405 | 28.6 | 305 | 273 | 323.8 | 2 | 362 | As Required | 12 | 7/8 | 100 | 115 | 1 | M24 |
| 12 | 300 | 485 | 30.2 | 365 | 323.8 | 381 | 2 | 431.8 | As Required | 12 | 7/8 | 100 | 120 | 1 | M24 |
| 14 | 350 | 535 | 33.4 | 400 | 355.6 | 412.8 | 2 | 476.3 | As Required | 12 | 1 | 115 | 135 | 1 1/8 | M27 |
| 16 | 400 | 595 | 35 | 457 | 406.4 | 469.9 | 2 | 539.8 | As Required | 16 | 1 | 115 | 135 | 1 1/8 | M27 |
| 18 | 450 | 635 | 38.1 | 505 | 457.2 | 533.4 | 2 | 577.9 | As Required | 16 | 1 1/8 | 125 | 145 | 1 1/4 | M30 |
| 20 | 500 | 700 | 41.3 | 559 | 508 | 584.2 | 2 | 635 | As Required | 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 |
Highly demanded and best quality long weld neck flanges by size range in 3 Inch, 4 Inch, 1.5 Inch, 1 Inch, 3/4 Inch, 5 Inch. 6 Inch, 8 Inch.
Long Weld Neck Flanges Applications
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Petrochemical Industries
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Pharmaceutical Equipment
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Power Generation
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Heating Systems and Heat Exchanger
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Pulp and Paper Industry
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Mining Support
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Chemical Equipment
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Gas Processing
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Plumbing
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Nuclear Power Systems
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Condensers
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Sea Water Equipment
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Buildings and Bridges
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Industrial Water Lines
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Food Processing Industry
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Fire Protection Systems
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Off-Shore Oil Drilling Companies
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Australia, Afghanistan, Algeria, Angola, Argentina, Armenia, Azerbaijan, Bahrain, Bangladesh, Benin,
Bhutan, Botswana, Brazil, Brunei, Burkina Faso, Cambodia, Cameroon, Canada, Central Africa Republic,
Chad, Chile, Colombia, Cuba, Cyprus, DRC, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini,
Ethiopia, Fiji, Finland, France, Georgia, Germany, Ghana, Greece, Hungary, Iceland, Indonesia, Iran,
Iraq, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyzstan, Laos, Lebanon,
Lesotho, Liberia, Libya, Lithuania, Madagascar, Malawi, Malaysia, Maldives, Mali, Mexico, Morocco,
Mozambique, Mauritania, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nigeria, Norway, Oman,
Panama, Peru, Philippines, Poland, Portugal, Palestine, Qatar, Russia, Rwanda, Romania, Saudi Arabia,
Senegal, Sierra Leone, Singapore, Slovakia, Somalia, South Africa, South Korea, South Sudan, Spain,
Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Tasmania, Thailand, The Gambia,
Timor-Leste, Togo, Tunisia, Turkey, Turkiye, Turkmenistan, Uganda, Uzbekistan, United Arab Emirates (UAE),
United Kingdom (UK), United States (US), Venezuela, Vietnam, Yemen, Zambia, Zimbabwe
Abu Dhabi, Amsterdam, Abuja, Accra, Addis Ababa, Ahmedabad, Algiers, Amman, Ankara, Antananarivo,
Ashgabat, Asmara, Astana, Athens, Baghdad, Baku, Bamako, Bandar Seri Begawan, Bangkok, Bangui,
Banjul, Beirut, Bengaluru, Berlin, Bishkek, Bloemfontein, Bogotá, Bern, Brasília, Bratislava,
Bucharest, Budapest, Buenos Aires, Cairo, Canberra, Cape Town, Caracas, Chennai, Coimbatore, Dakar,
Damascus, Dhaka, Dili, Djibouti city, Dodoma, Doha, Dublin, Dushanbe, Freetown, Gaborone, Ghaziabad,
Guwahati, Hanoi, Harare, Havana, Helsinki, Hobart, Hyderabad, Indore, Jaipur, Jakarta, Jerusalem,
Juba, Jurong East, Kabul, Kampala, Kanpur, Kathmandu, Kigali, Kinshasa, Kochi, Kolkata, Kuala Lumpur,
Kuwait City, Lisbon, Lilongwe, Lima, Lobamba, Lomé, London, Luanda, Lucknow, Lusaka, Malabo, Madrid,
Malé, Mexico City, Manama, Moscow, Manila, Maputo, Maseru, Mbabane, Mogadishu, Monrovia, Mumabi,
Muscat, Nagpur, Nairobi, New Delhi, Niamey, Nicosia, Noida, Nouakchott, N’Djamena, Oslo, Ottawa,
Ouagadougou, Panama City, Paris, Patna, Phnom Penh, Porto-Novo, Pretoria, Pune, Rabat, Reykjavík,
Riyadh, Rome, Sana’a, Santiago, Sri Jayawardenepura Kotte, Stockholm, Seoul, Singapore, Surat,
Suva, Taipei City, Tashkent, Tokyo, Tbilisi, Tehran, Thimphu, Tripoli, Tunis, Vientiane, Vilnius,
Visakhapatnam, Warsaw, Washington D.C., Wellington, Windhoek, Yaoundé, Yerevan, Naypyidaw