Weld Neck Flanges / WN Flanges
ANSI / ASME B16.9, B16.5, B16.47 Weld Neck Raised Face Flanges / WNRF Flanges Manufacturer & Supplier in Mumbai, India
Stainless Steel Welded Neck Flanges Supplier, Carbon Steel Weld Neck Flanges Stockiest, Alloy Steel Welding Neck Flanges Wholesaler, Nickel Alloy Weld Neck Flanges Dealer in India
Nakshatra Steel & Alloys is one of the eminent Weld Neck Flanges manufacturers and supplier with various standards such as ANSI / ASME / DIN etc. In these flanges, the pipe is welded to the neck of the pipe flange. This allows the stress to pass through the pipe from the weld neck.
We also offer WNRF Flanges (Raised Face Weld Neck Flanges) that have various industrial applications. They are generally deployed where reduction of high-stress concentration is necessary. They are also purposed in high-pressure functions where extremely hot or extremely cold temperatures persist.
We also offer these flanges in various shapes, sizes and materials like Stainless Steel Weld Neck Flanges, and Carbon Steel Weld Neck Flanges, Alloy Steel Weld Neck Flanges, Nickel Alloy Weld Neck Flanges and many more.
The design of Welding Neck Flanges is made ensuring that the inside diameter of the pipe matches the inside diameter of the flange. Based on weld neck flange dimensions, they are classified into two types of regular type flanges and long type flanges. The former one is used with pipes, and the latter one is employed in the process plant.
Forged Weld Neck Flanges are generally ring-shaped and have an excellent quality and at very competitive prices. They are attached to the pipe in order to provide good strength and support. Monel Weld Neck Flanges are corrosion resistant which is made up of the nickel-copper alloy. Inconel Weld Neck Flanges are immune to oxidation; hence they protect the fittings from pitting corrosion. Call us today to request a free quote!
Weld Neck Flanges Specifications:
| Size | : | ½" (15 NB) to 48" (1200NB) |
| Class | : | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc. |
| Standards | : | ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 |
| DIN | : | DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 |
| B.S | : | BS4504 , BS4504, BS1560, BS10 |
| Flange Face Type | : | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Coating/Surface Treatment | : | Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
Grade specifications of Weld Neck Flanges
| Stainless Steel Weld Neck Raised Face Flanges | |
| Standard | ASTM A182 , A240 |
| Grades | F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L |
| Carbon Steel Weld Neck Raised Face Flanges | |
| Standard | ASTM A105 |
| Grades | Gr. F42,46,52,56,60,65,70 |
| Alloy Steel Weld Neck Raised Face Flanges | |
| Standard | ASTM A182 |
| Grades | F1,F5,F9,F11,F22,F91 |
| Nickel Alloy Steel Weld Neck Raised Face Flanges | |
| Standard | ASTM SB564, SB160, SB472, SB162 |
| Grades | Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), |
| Copper Alloy Weld Neck Raised Face Flanges | |
| Standard | ASTM SB 61 , SB62 , SB151 , SB152 |
| Grades | UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, |
| Duplex Steel Weld Neck Raised Face Flanges | |
| Standard | ASTM A182, A240 |
| Grades | UNS F 44, F 45, F51, F 53, F 55, F 60, F 61 |
Weld Neck Flange Dimensions – ANSI/ASME B16.5 Class 150 to Class 2500
ANSI/ASME B16.5 Class 150 Weld Neck Flange Dimensions
ANSI/ASME B16.5 Class 150 Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Diameter | Flange Thick. | Hub OD | Weld Neck OD | Welding Neck Length | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | ||
| 1/2 | 15 | 90 | 9.6 | 30 | 21.3 | 46 | 34.9 | 2 | 60.3 | 1.6 |
| 3/4 | 20 | 100 | 11.2 | 38 | 26.7 | 51 | 42.9 | 2 | 69.9 | 1.6 |
| 1 | 25 | 110 | 12.7 | 49 | 33.4 | 54 | 50.8 | 2 | 79.4 | 1.6 |
| 1 1/4 | 32 | 115 | 14.3 | 59 | 42.2 | 56 | 63.5 | 2 | 88.9 | 1.6 |
| 1 1/2 | 40 | 125 | 15.9 | 65 | 48.3 | 60 | 73 | 2 | 98.4 | 1.6 |
| 2 | 50 | 150 | 17.5 | 78 | 60.3 | 62 | 92.1 | 2 | 120.7 | 1.6 |
| 2 1/2 | 65 | 180 | 20.7 | 90 | 73 | 68 | 104.8 | 2 | 139.7 | 1.6 |
| 3 | 80 | 190 | 22.3 | 108 | 88.9 | 68 | 127 | 2 | 152.4 | 1.6 |
| 3 1/2 | 90 | 215 | 22.3 | 122 | 101.6 | 70 | 139.7 | 2 | 177.8 | 1.6 |
| 4 | 100 | 230 | 22.3 | 135 | 114.3 | 75 | 157.2 | 2 | 190.5 | 1.6 |
| 5 | 125 | 255 | 22.3 | 164 | 141.3 | 87 | 185.7 | 2 | 215.9 | 1.6 |
| 6 | 150 | 280 | 23.9 | 192 | 168.3 | 87 | 215.9 | 2 | 241.3 | 1.6 |
| 8 | 200 | 345 | 27 | 246 | 219.1 | 100 | 269.9 | 2 | 298.5 | 1.6 |
| 10 | 250 | 405 | 28.6 | 305 | 273 | 100 | 323.8 | 2 | 362 | 1.6 |
| 12 | 300 | 485 | 30.2 | 365 | 323.8 | 113 | 381 | 2 | 431.8 | 1.6 |
| 14 | 350 | 535 | 33.4 | 400 | 355.6 | 125 | 412.8 | 2 | 476.3 | 1.6 |
| 16 | 400 | 595 | 35 | 457 | 406.4 | 125 | 469.9 | 2 | 539.8 | 1.6 |
| 18 | 450 | 635 | 38.1 | 505 | 457.2 | 138 | 533.4 | 2 | 577.9 | 1.6 |
| 20 | 500 | 700 | 41.3 | 559 | 508 | 143 | 584.2 | 2 | 635 | 1.6 |
| 24 | 600 | 815 | 46.1 | 663 | 610 | 151 | 692.2 | 2 | 749.3 | 1.6 |
ANSI/ASME B16.5 Class 150 Weld Neck Flange Stud & Bolt Dimensions
ANSI/ASME B16.5 Class 150 Weld Neck Flange Stud & Bolt Dimensions
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 1/2 | 50 | 55 | 5/8 | M14 | 0.6 |
| 3/4 | 20 | 4 | 1/2 | 50 | 65 | 5/8 | M14 | 0.9 |
| 1 | 25 | 4 | 1/2 | 55 | 65 | 5/8 | M14 | 1.4 |
| 1 1/4 | 32 | 4 | 1/2 | 55 | 70 | 5/8 | M14 | 1.4 |
| 1 1/2 | 40 | 4 | 1/2 | 65 | 70 | 5/8 | M14 | 1.8 |
| 2 | 50 | 4 | 5/8 | 70 | 85 | 3/4 | M16 | 2.7 |
| 2 1/2 | 65 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 3.7 |
| 3 | 80 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 4.6 |
| 3 1/2 | 90 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 5.5 |
| 4 | 100 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 6.8 |
| 5 | 125 | 8 | 3/4 | 85 | 95 | 7/8 | M20 | 8.7 |
| 6 | 150 | 8 | 3/4 | 85 | 100 | 7/8 | M20 | 10.9 |
| 8 | 200 | 8 | 3/4 | 90 | 110 | 7/8 | M20 | 17.7 |
| 10 | 250 | 12 | 7/8 | 100 | 115 | 1 | M24 | 24 |
| 12 | 300 | 12 | 7/8 | 100 | 120 | 1 | M24 | 37 |
| 14 | 350 | 12 | 1 | 115 | 135 | 1 1/8 | M27 | 50 |
| 16 | 400 | 16 | 1 | 115 | 135 | 1 1/8 | M27 | 64 |
| 18 | 450 | 16 | 1 1/8 | 125 | 145 | 1 1/4 | M30 | 68 |
| 20 | 500 | 20 | 1 1/8 | 140 | 160 | 1 1/4 | M30 | 82 |
| 24 | 600 | 20 | 1 1/4 | 150 | 170 | 1 3/8 | M33 | 118 |
ANSI/ASME B16.5 Class 300 Weld Neck Flange Dimensions
ANSI/ASME B16.5 Class 300 Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Diameter | Flange Thick. | Hub OD | Weld Neck OD | Welding Neck Length | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | ||
| 1/2 | 15 | 95 | 12.7 | 38 | 21.3 | 51 | 34.9 | 2 | 66.7 | 1.6 |
| 3/4 | 20 | 115 | 14.3 | 48 | 26.7 | 56 | 42.9 | 2 | 82.6 | 1.6 |
| 1 | 25 | 125 | 15.9 | 54 | 33.4 | 60 | 50.8 | 2 | 88.9 | 1.6 |
| 1 1/4 | 32 | 135 | 17.5 | 64 | 42.2 | 64 | 63.5 | 2 | 98.4 | 1.6 |
| 1 1/2 | 40 | 155 | 19.1 | 70 | 48.3 | 67 | 73 | 2 | 114.3 | 1.6 |
| 2 | 50 | 165 | 20.7 | 84 | 60.3 | 68 | 92.1 | 2 | 127 | 1.6 |
| 2 1/2 | 65 | 190 | 23.9 | 100 | 73 | 75 | 104.8 | 2 | 149.2 | 1.6 |
| 3 | 80 | 210 | 27 | 117 | 88.9 | 78 | 127 | 2 | 168.3 | 1.6 |
| 3 1/2 | 90 | 230 | 28.6 | 133 | 101.6 | 79 | 139.7 | 2 | 184.2 | 1.6 |
| 4 | 100 | 255 | 30.2 | 146 | 114.3 | 84 | 157.2 | 2 | 200 | 1.6 |
| 5 | 125 | 280 | 33.4 | 178 | 141.3 | 97 | 185.7 | 2 | 235 | 1.6 |
| 6 | 150 | 320 | 35 | 206 | 168.3 | 97 | 215.9 | 2 | 269.9 | 1.6 |
| 8 | 200 | 380 | 39.7 | 260 | 219.1 | 110 | 269.9 | 2 | 330.2 | 1.6 |
| 10 | 250 | 445 | 46.1 | 321 | 273 | 116 | 323.8 | 2 | 387.4 | 1.6 |
| 12 | 300 | 520 | 49.3 | 375 | 323.8 | 129 | 381 | 2 | 450.8 | 1.6 |
| 14 | 350 | 585 | 52.4 | 425 | 355.6 | 141 | 412.8 | 2 | 514.4 | 1.6 |
| 16 | 400 | 650 | 55.6 | 483 | 406.4 | 144 | 469.9 | 2 | 571.5 | 1.6 |
| 18 | 450 | 710 | 58.8 | 533 | 457 | 157 | 533.4 | 2 | 628.6 | 1.6 |
| 20 | 500 | 775 | 62 | 587 | 508 | 160 | 584.2 | 2 | 685.8 | 1.6 |
| 24 | 600 | 915 | 68.3 | 702 | 610 | 167 | 692.2 | 2 | 812.8 | 1.6 |
ANSI/ASME B16.5 Class 300 Weld Neck Flange Stud & Bolt Dimensions
ANSI/ASME B16.5 Class 300 Weld Neck Flange Stud & Bolt Dimensions
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 1/2 | 55 | 65 | 5/8 | M14 | 1.4 |
| 3/4 | 20 | 4 | 5/8 | 65 | 75 | 3/4 | M16 | 1.4 |
| 1 | 25 | 4 | 5/8 | 65 | 75 | 3/4 | M16 | 1.8 |
| 1 1/4 | 32 | 4 | 5/8 | 70 | 85 | 3/4 | M16 | 2.3 |
| 1 1/2 | 40 | 4 | 3/4 | 75 | 90 | 7/8 | M20 | 3.2 |
| 2 | 50 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 4.1 |
| 2 1/2 | 65 | 8 | 3/4 | 85 | 100 | 7/8 | M20 | 5.5 |
| 3 | 80 | 8 | 3/4 | 90 | 110 | 7/8 | M20 | 6.8 |
| 3 1/2 | 90 | 8 | 3/4 | 95 | 110 | 7/8 | M20 | 8.2 |
| 4 | 100 | 8 | 3/4 | 95 | 115 | 7/8 | M20 | 11.4 |
| 5 | 125 | 8 | 3/4 | 110 | 120 | 7/8 | M20 | 14.6 |
| 6 | 150 | 12 | 3/4 | 110 | 120 | 7/8 | M20 | 19.1 |
| 8 | 200 | 12 | 7/8 | 120 | 140 | 1 | M24 | 31 |
| 10 | 250 | 16 | 1 | 140 | 160 | 1 1/8 | M27 | 42 |
| 12 | 300 | 16 | 1 1/8 | 145 | 170 | 1 1/4 | M30 | 64 |
| 14 | 350 | 20 | 1 1/8 | 160 | 180 | 1 1/4 | M30 | 82 |
| 16 | 400 | 20 | 1 1/4 | 165 | 190 | 1 3/8 | M33 | 113 |
| 18 | 450 | 24 | 1 1/4 | 170 | 195 | 1 3/8 | M33 | 145 |
| 20 | 500 | 24 | 1 1/4 | 185 | 205 | 1 3/8 | M33 | 182 |
| 24 | 600 | 24 | 1 1/2 | 205 | 230 | 1 5/8 | M39 | 264 |
ANSI/ASME B16.5 Class 400 Weld Neck Flange Dimensions
ANSI/ASME B16.5 Class 400 Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Diameter | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | ||
| 1/2 | 15 | 95 | 14.3 | 38 | 21.3 | 52 | 34.9 | 7 | 66.7 | 1.6 |
| 3/4 | 20 | 115 | 15.9 | 48 | 26.7 | 57 | 42.9 | 7 | 82.6 | 1.6 |
| 1 | 25 | 125 | 17.5 | 54 | 33.4 | 62 | 50.8 | 7 | 88.9 | 1.6 |
| 1 1/4 | 32 | 135 | 20.7 | 64 | 42.2 | 67 | 63.5 | 7 | 98.4 | 1.6 |
| 1 1/2 | 40 | 155 | 22.3 | 70 | 48.3 | 70 | 73 | 7 | 114.3 | 1.6 |
| 2 | 50 | 165 | 25.4 | 84 | 60.3 | 73 | 92.1 | 7 | 127 | 1.6 |
| 2 1/2 | 65 | 190 | 28.6 | 100 | 73 | 79 | 104.8 | 7 | 149.2 | 1.6 |
| 3 | 80 | 210 | 31.8 | 117 | 88.9 | 83 | 127 | 7 | 168.3 | 1.6 |
| 3 1/2 | 90 | 230 | 35 | 133 | 101.6 | 86 | 139.7 | 7 | 184.2 | 1.6 |
| 4 | 100 | 255 | 35 | 146 | 114.3 | 89 | 157.2 | 7 | 200 | 1.6 |
| 5 | 125 | 280 | 38.1 | 178 | 141.3 | 102 | 185.7 | 7 | 235 | 1.6 |
| 6 | 150 | 320 | 41.3 | 206 | 168.3 | 103 | 215.9 | 7 | 269.9 | 1.6 |
| 8 | 200 | 380 | 47.7 | 260 | 219.1 | 117 | 269.9 | 7 | 330 | 1.6 |
| 10 | 250 | 445 | 54 | 321 | 273 | 124 | 323.8 | 7 | 387.4 | 1.6 |
| 12 | 300 | 520 | 57.2 | 375 | 323.8 | 137 | 381 | 7 | 450.8 | 1.6 |
| 14 | 350 | 585 | 60.4 | 425 | 355.6 | 149 | 412.8 | 7 | 514.4 | 1.6 |
| 16 | 400 | 650 | 63.5 | 483 | 406.4 | 152 | 469.9 | 7 | 571.5 | 1.6 |
| 18 | 450 | 710 | 66.7 | 533 | 457 | 165 | 533.4 | 7 | 628.6 | 1.6 |
| 20 | 500 | 775 | 69.9 | 587 | 508 | 168 | 584.2 | 7 | 685.8 | 1.6 |
| 24 | 600 | 915 | 76.2 | 702 | 610 | 175 | 692.2 | 7 | 812.8 | 1.6 |
ANSI/ASME B16.5 Class 400 Weld Neck Flange Stud & Bolt Dimensions
ANSI/ASME B16.5 Class 400 Weld Neck Flange Stud & Bolt Dimensions
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size |
| 1/2 | 15 | 4 | 1/2 | 75 | 5/8 | M14 |
| 3/4 | 20 | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 | 25 | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 1/4 | 32 | 4 | 5/8 | 95 | 3/4 | M16 |
| 1 1/2 | 40 | 4 | 3/4 | 110 | 7/8 | M20 |
| 2 | 50 | 8 | 5/8 | 110 | 3/4 | M16 |
| 2 1/2 | 65 | 8 | 3/4 | 120 | 7/8 | M20 |
| 3 | 80 | 8 | 3/4 | 125 | 7/8 | M20 |
| 3 1/2 | 90 | 8 | 7/8 | 140 | 1 | M24 |
| 4 | 100 | 8 | 7/8 | 140 | 1 | M24 |
| 5 | 125 | 8 | 7/8 | 145 | 1 | M24 |
| 6 | 150 | 12 | 7/8 | 150 | 1 | M24 |
| 8 | 200 | 12 | 1 | 170 | 1 1/8 | M27 |
| 10 | 250 | 16 | 1 1/8 | 190 | 1 1/4 | M30 |
| 12 | 300 | 16 | 1 1/4 | 205 | 1 3/8 | M33 |
| 14 | 350 | 20 | 1 1/4 | 210 | 1 3/8 | M33 |
| 16 | 400 | 20 | 1 3/8 | 220 | 1 1/2 | M36 |
| 18 | 450 | 24 | 1 3/8 | 230 | 1 1/2 | M36 |
| 20 | 500 | 24 | 1 1/2 | 240 | 1 3/4 | M39 |
| 24 | 600 | 24 | 1 3/4 | 265 | 1 7/8 | M45 |
ANSI/ASME B16.5 Class 600 Weld Neck Flange Dimensions
ANSI/ASME B16.5 Class 600 Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Diameter | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | ||
| 1/2 | 15 | 95 | 14.3 | 38 | 21.3 | 52 | 34.9 | 7 | 66.7 | 1.6 |
| 3/4 | 20 | 115 | 15.9 | 48 | 26.7 | 57 | 42.9 | 7 | 82.6 | 1.6 |
| 1 | 25 | 125 | 17.5 | 54 | 33.4 | 62 | 50.8 | 7 | 88.9 | 1.6 |
| 1 1/4 | 32 | 135 | 20.7 | 64 | 42.2 | 67 | 63.5 | 7 | 98.4 | 1.6 |
| 1 1/2 | 40 | 155 | 22.3 | 70 | 48.3 | 70 | 73 | 7 | 114.3 | 1.6 |
| 2 | 50 | 165 | 25.4 | 84 | 60.3 | 73 | 92.1 | 7 | 127 | 1.6 |
| 2 1/2 | 65 | 190 | 28.6 | 100 | 73 | 79 | 104.8 | 7 | 149.2 | 1.6 |
| 3 | 80 | 210 | 31.8 | 117 | 88.9 | 83 | 127 | 7 | 168.3 | 1.6 |
| 3 1/2 | 90 | 230 | 35 | 133 | 101.6 | 86 | 139.7 | 7 | 184.2 | 1.6 |
| 4 | 100 | 275 | 38.1 | 152 | 114.3 | 102 | 157.2 | 7 | 215.9 | 1.6 |
| 5 | 125 | 330 | 44.5 | 189 | 141.3 | 114 | 185.7 | 7 | 266.7 | 1.6 |
| 6 | 150 | 355 | 47.7 | 222 | 168.3 | 117 | 215.9 | 7 | 292.1 | 1.6 |
| 8 | 200 | 420 | 55.6 | 273 | 219.1 | 133 | 269.9 | 7 | 349.2 | 1.6 |
| 10 | 250 | 510 | 63.5 | 343 | 273 | 152 | 323.8 | 7 | 431.8 | 1.6 |
| 12 | 300 | 560 | 66.7 | 400 | 323.8 | 156 | 381 | 7 | 489 | 1.6 |
| 14 | 350 | 605 | 69.9 | 432 | 355.6 | 165 | 412.8 | 7 | 527 | 1.6 |
| 16 | 400 | 685 | 76.2 | 495 | 406.4 | 178 | 469.9 | 7 | 603.2 | 1.6 |
| 18 | 450 | 745 | 82.6 | 546 | 457 | 184 | 533.4 | 7 | 654 | 1.6 |
| 20 | 500 | 815 | 88.9 | 610 | 508 | 190 | 584.2 | 7 | 723.9 | 1.6 |
| 24 | 600 | 940 | 101.6 | 718 | 610 | 203 | 692.2 | 7 | 1.6 |
ANSI/ASME B16.5 Class 600 Weld Neck Flange Stud & Bolt Dimensions
ANSI/ASME B16.5 Class 600 Weld Neck Flange Stud & Bolt Dimensions
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 1/2 | 75 | 5/8 | M14 | 1.5 |
| 3/4 | 20 | 4 | 5/8 | 90 | 3/4 | M16 | 1.8 |
| 1 | 25 | 4 | 5/8 | 90 | 3/4 | M16 | 1.8 |
| 1 1/4 | 32 | 4 | 5/8 | 95 | 3/4 | M16 | 2.7 |
| 1 1/2 | 40 | 4 | 3/4 | 110 | 7/8 | M20 | 3.7 |
| 2 | 50 | 8 | 5/8 | 110 | 3/4 | M16 | 5.5 |
| 2 1/2 | 65 | 8 | 3/4 | 120 | 7/8 | M20 | 8.2 |
| 3 | 80 | 8 | 3/4 | 125 | 7/8 | M20 | 10.5 |
| 3 1/2 | 90 | 8 | 7/8 | 140 | 1 | M24 | 11.8 |
| 4 | 100 | 8 | 7/8 | 145 | 1 | M24 | 19.1 |
| 5 | 125 | 8 | 1 | 165 | 1 1/8 | M27 | 31 |
| 6 | 150 | 12 | 1 | 170 | 1 1/8 | M27 | 36 |
| 8 | 200 | 12 | 1 1/8 | 190 | 1 1/4 | M30 | 55 |
| 10 | 250 | 16 | 1 1/4 | 215 | 1 3/8 | M33 | 86 |
| 12 | 300 | 20 | 1 1/4 | 220 | 1 3/8 | M33 | 102 |
| 14 | 350 | 20 | 1 3/8 | 235 | 1 1/2 | M36 | 127 |
| 16 | 400 | 20 | 1 1/2 | 255 | 1 5/8 | M39 | 177 |
| 18 | 450 | 20 | 1 5/8 | 275 | 1 3/4 | M42 | 216 |
| 20 | 500 | 24 | 1 5/8 | 285 | 1 3/4 | M42 | 268 |
| 24 | 600 | 24 | 1 7/8 | 330 | 2 | M48 | 377 |
ANSI/ASME B16.5 Class 900 Weld Neck Flange Dimensions
ANSI/ASME B16.5 Class 900 Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Diameter | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | ||
| 1/2 | 15 | 120 | 22.3 | 38 | 21.3 | 60 | 34.9 | 7 | 82.6 | 1.6 |
| 3/4 | 20 | 130 | 25.4 | 44 | 26.7 | 70 | 42.9 | 7 | 88.9 | 1.6 |
| 1 | 25 | 150 | 28.6 | 52 | 33.4 | 73 | 50.8 | 7 | 101.6 | 1.6 |
| 1 1/4 | 32 | 160 | 28.6 | 64 | 42.2 | 73 | 63.5 | 7 | 111.1 | 1.6 |
| 1 1/2 | 40 | 180 | 31.8 | 70 | 48.3 | 83 | 73 | 7 | 123.8 | 1.6 |
| 2 | 50 | 215 | 38.1 | 105 | 60.3 | 102 | 92.1 | 7 | 165.1 | 1.6 |
| 2 1/2 | 65 | 245 | 41.3 | 124 | 73 | 105 | 104.8 | 7 | 190.5 | 1.6 |
| 3 | 80 | 240 | 38.1 | 127 | 88.9 | 102 | 127 | 7 | 190.5 | 1.6 |
| 4 | 100 | 290 | 44.5 | 159 | 114.3 | 114 | 157.2 | 7 | 235 | 1.6 |
| 5 | 125 | 350 | 50.8 | 190 | 141.3 | 127 | 185.7 | 7 | 279.4 | 1.6 |
| 6 | 150 | 380 | 55.6 | 235 | 168.3 | 140 | 215.9 | 7 | 317.5 | 1.6 |
| 8 | 200 | 470 | 63.5 | 298 | 219.1 | 162 | 269.9 | 7 | 393.7 | 1.6 |
| 10 | 250 | 545 | 69.9 | 368 | 273 | 184 | 323.8 | 7 | 469.9 | 1.6 |
| 12 | 300 | 610 | 79.4 | 419 | 323.8 | 200 | 381 | 7 | 533.4 | 1.6 |
| 14 | 350 | 640 | 85.8 | 451 | 355.6 | 213 | 412.8 | 7 | 558.8 | 1.6 |
| 16 | 400 | 705 | 88.9 | 508 | 406.4 | 216 | 469.9 | 7 | 616 | 1.6 |
| 18 | 450 | 785 | 101.6 | 565 | 457 | 229 | 533.4 | 7 | 685.8 | 1.6 |
| 20 | 500 | 855 | 108 | 622 | 508 | 248 | 584.2 | 7 | 749.3 | 1.6 |
| 24 | 600 | 1040 | 139.7 | 749 | 610 | 292 | 692.2 | 7 | 901.7 | 1.6 |
ANSI/ASME B16.5 Class 900 Weld Neck Flange Stud & Bolt Dimensions
ANSI/ASME B16.5 Class 900 Weld Neck Flange Stud & Bolt Dimensions
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 3/4 | 110 | 7/8 | M20 | 2.3 |
| 3/4 | 20 | 4 | 3/4 | 115 | 7/8 | M20 | 2.7 |
| 1 | 25 | 4 | 7/8 | 125 | 1 | M24 | 4.1 |
| 1 1/4 | 32 | 4 | 7/8 | 125 | 1 | M24 | 4.6 |
| 1 1/2 | 40 | 4 | 1 | 140 | 1 1/8 | M27 | 5.9 |
| 2 | 50 | 8 | 7/8 | 145 | 1 | M24 | 11.5 |
| 2 1/2 | 65 | 8 | 1 | 160 | 1 1/8 | M27 | 16.5 |
| 3 | 80 | 8 | 7/8 | 145 | 1 | M24 | 14 |
| 4 | 100 | 8 | 1 1/8 | 170 | 1 1/4 | M30 | 23 |
| 5 | 125 | 8 | 1 1/4 | 190 | 1 3/8 | M33 | 39.5 |
| 6 | 150 | 12 | 1 1/8 | 190 | 1 1/4 | M30 | 50 |
| 8 | 200 | 12 | 1 3/8 | 220 | 1 1/2 | M36 | 80 |
| 10 | 250 | 16 | 1 3/8 | 235 | 1 1/2 | M36 | 118 |
| 12 | 300 | 20 | 1 3/8 | 255 | 1 1/2 | M36 | 148 |
| 14 | 350 | 20 | 1 1/2 | 275 | 1 5/8 | M39 | 182 |
| 16 | 400 | 20 | 1 5/8 | 285 | 1 3/4 | M42 | 225 |
| 18 | 450 | 20 | 1 7/8 | 325 | 2 | M48 | 300 |
| 20 | 500 | 20 | 2 | 350 | 2 1/8 | M52 | 373 |
| 24 | 600 | 20 | 2 1/2 | 440 | 2 5/8 | M64 | 680 |
ANSI/ASME B16.5 Class 1500 Weld Neck Flange Dimensions
ANSI/ASME B16.5 Class 1500 Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Diameter | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | ||
| 1/2 | 15 | 120 | 22.3 | 38 | 21.3 | 60 | 34.9 | 7 | 82.6 | 1.6 |
| 3/4 | 20 | 130 | 25.4 | 44 | 26.7 | 70 | 42.9 | 7 | 88.9 | 1.6 |
| 1 | 25 | 150 | 28.6 | 52 | 33.4 | 73 | 50.8 | 7 | 101.6 | 1.6 |
| 1 1/4 | 32 | 160 | 28.6 | 64 | 42.2 | 73 | 63.5 | 7 | 111.1 | 1.6 |
| 1 1/2 | 40 | 180 | 31.8 | 70 | 48.3 | 83 | 73 | 7 | 123.8 | 1.6 |
| 2 | 50 | 215 | 38.1 | 105 | 60.3 | 102 | 92.1 | 7 | 165.1 | 1.6 |
| 2 1/2 | 65 | 245 | 41.3 | 124 | 73 | 105 | 104.8 | 7 | 190.5 | 1.6 |
| 3 | 80 | 265 | 47.7 | 133 | 88.9 | 117 | 127 | 7 | 203.2 | 1.6 |
| 4 | 100 | 310 | 54 | 162 | 114.3 | 124 | 157.2 | 7 | 241.3 | 1.6 |
| 5 | 125 | 375 | 73.1 | 197 | 141.3 | 156 | 185.7 | 7 | 292.1 | 1.6 |
| 6 | 150 | 395 | 82.6 | 229 | 168.3 | 171 | 215.9 | 7 | 317.5 | 1.6 |
| 8 | 200 | 485 | 92.1 | 292 | 219.1 | 213 | 269.9 | 7 | 393.7 | 1.6 |
| 10 | 250 | 585 | 108 | 368 | 273 | 254 | 323.8 | 7 | 482.6 | 1.6 |
| 12 | 300 | 675 | 123.9 | 451 | 323.8 | 283 | 381 | 7 | 571.5 | 1.6 |
| 14 | 350 | 750 | 133.4 | 495 | 355.6 | 298 | 412.8 | 7 | 635 | 1.6 |
| 16 | 400 | 825 | 146.1 | 552 | 406.4 | 311 | 469.9 | 7 | 704.8 | 1.6 |
| 18 | 450 | 915 | 162 | 597 | 457 | 327 | 533.4 | 7 | 774.7 | 1.6 |
| 20 | 500 | 985 | 177.8 | 641 | 508 | 356 | 584.2 | 7 | 831.8 | 1.6 |
| 24 | 600 | 1170 | 203.2 | 762 | 610 | 406 | 692.2 | 7 | 990.6 | 1.6 |
ANSI/ASME B16.5 Class 1500 Weld Neck Flange Stud & Bolt Dimensions
ANSI/ASME B16.5 Class 1500 Weld Neck Flange Stud & Bolt Dimensions
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 3/4 | 110 | 7/8 | M20 | 2.3 |
| 3/4 | 20 | 4 | 3/4 | 115 | 7/8 | M20 | 2.7 |
| 1 | 25 | 4 | 7/8 | 125 | 1 | M24 | 4.1 |
| 1 1/4 | 32 | 4 | 7/8 | 125 | 1 | M24 | 4.6 |
| 1 1/2 | 40 | 4 | 1 | 140 | 1 1/8 | M27 | 5.9 |
| 2 | 50 | 8 | 7/8 | 145 | 1 | M24 | 11.4 |
| 2 1/2 | 65 | 8 | 1 | 160 | 1 1/8 | M27 | 16.4 |
| 3 | 80 | 8 | 1 1/8 | 180 | 1 1/4 | M30 | 21.8 |
| 4 | 100 | 8 | 1 1/4 | 195 | 1 3/8 | M33 | 33 |
| 5 | 125 | 8 | 1 1/2 | 250 | 1 5/8 | M39 | 59 |
| 6 | 150 | 12 | 1 3/8 | 260 | 1 1/2 | M36 | 75 |
| 8 | 200 | 12 | 1 5/8 | 290 | 1 3/4 | M42 | 125 |
| 10 | 250 | 12 | 1 7/8 | 335 | 2 | M48 | 207 |
| 12 | 300 | 16 | 2 | 375 | 2 1/8 | M52 | 314 |
| 14 | 350 | 16 | 2 1/4 | 405 | 2 3/8 | M56 | 427 |
| 16 | 400 | 16 | 2 1/2 | 445 | 2 5/8 | M64 | 568 |
| 18 | 450 | 16 | 2 3/4 | 495 | 2 7/8 | M72 | 738 |
| 20 | 500 | 16 | 3 | 540 | 3 1/8 | M76 | 932 |
| 24 | 600 | 16 | 3 1/2 | 615 | 3 5/8 | M90 | 1511 |
ANSI/ASME B16.5 Class 2500 Weld Neck Flange Dimensions
ANSI/ASME B16.5 Class 2500 Weld Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Diameter | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | ||
| 15 | 135 | 30.2 | 43 | 21.3 | 73 | 34.9 | 7 | 88.9 | 1.6 | |
| 3/4 | 20 | 140 | 31.8 | 51 | 26.7 | 79 | 42.9 | 7 | 95.2 | 1.6 |
| 1 | 25 | 160 | 35 | 57 | 33.4 | 89 | 50.8 | 7 | 108 | 1.6 |
| 1 1/4 | 32 | 185 | 38.1 | 73 | 42.2 | 95 | 63.5 | 7 | 130.2 | 1.6 |
| 1 1/2 | 40 | 205 | 44.5 | 79 | 48.3 | 111 | 73 | 7 | 146 | 1.6 |
| 2 | 50 | 235 | 50.9 | 95 | 60.3 | 127 | 92.1 | 7 | 171.4 | 1.6 |
| 2 1/2 | 65 | 265 | 57.2 | 114 | 73 | 143 | 104.8 | 7 | 196.8 | 1.6 |
| 3 | 80 | 305 | 66.7 | 133 | 88.9 | 168 | 127 | 7 | 228.6 | 1.6 |
| 4 | 100 | 355 | 76.2 | 165 | 114.3 | 190 | 157.2 | 7 | 273 | 1.6 |
| 5 | 125 | 420 | 92.1 | 203 | 141.3 | 229 | 185.7 | 7 | 323.8 | 1.6 |
| 6 | 150 | 485 | 108 | 235 | 168.3 | 273 | 215.9 | 7 | 368.3 | 1.6 |
| 8 | 200 | 550 | 127 | 305 | 219.1 | 318 | 269.9 | 7 | 438.2 | 1.6 |
| 10 | 250 | 675 | 165.1 | 375 | 273 | 419 | 323.8 | 7 | 539.8 | 1.6 |
| 12 | 300 | 760 | 184.2 | 441 | 323.8 | 464 | 381 | 7 | 619.1 | 1.6 |
ANSI/ASME B16.5 Class 2500 Weld Neck Flange Stud & Bolt Dimensions
ANSI/ASME B16.5 Class 2500 Weld Neck Flange Stud & Bolt Dimensions
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 3/4 | 120 | 7/8 | M20 | 3.3 |
| 3/4 | 20 | 4 | 3/4 | 125 | 7/8 | M20 | 3.7 |
| 1 | 25 | 4 | 7/8 | 140 | 1 | M24 | 5.5 |
| 1 1/4 | 32 | 4 | 1 | 150 | 1 1/8 | M27 | 7.8 |
| 1 1/2 | 40 | 4 | 1 1/8 | 170 | 1 1/4 | M30 | 11.5 |
| 2 | 50 | 8 | 1 | 180 | 1 1/8 | M27 | 19 |
| 2 1/2 | 65 | 8 | 1 1/8 | 195 | 1 1/4 | M30 | 24 |
| 3 | 80 | 8 | 1 1/4 | 220 | 1 3/8 | M33 | 42.8 |
| 4 | 100 | 8 | 1 1/2 | 255 | 1 5/8 | M39 | 66 |
| 5 | 125 | 8 | 1 3/4 | 300 | 1 7/8 | M45 | 111 |
| 6 | 150 | 8 | 2 | 345 | 2 1/8 | M52 | 173 |
| 8 | 200 | 12 | 2 | 380 | 2 1/8 | M52 | 264 |
| 10 | 250 | 12 | 2 1/2 | 490 | 2 5/8 | M64 | 490 |
| 12 | 300 | 12 | 2 3/4 | 540 | 2 7/8 | M72 | 695 |
Types of Weld Neck Flanges
| ANSI B16.5 Weld Neck Flanges | ANSI B16.5 Class 150 Weld Neck Flanges |
| ANSI B16.5 Class 300 Weld Neck Flanges | ANSI B16.5 Class 400 Weld Neck Flanges |
| ANSI B16.5 Class 600 Weld Neck Flanges | ANSI B16.5 Class 900 Weld Neck Flanges |
| ANSI B16.5 Class 1500 Weld Neck Flanges | ANSI B16.5 Class 2500 Weld Neck Flanges |
| Industry Standard Class 75 Weld Neck Flanges | Industry Standard Class 125 Light-weight Weld Neck Flanges |
| Industry Standard Class 125/150 Weld Neck Flanges | Industry Standard Class 150 Weld Neck Flanges |
| Industry Standard Class 175 Weld Neck Flanges | Industry Standard Class 250 Weld Neck Flanges |
| Industry Standard Class 300 Weld Neck Flanges | Industry Standard Class 350 Weld Neck Flanges |
| Plate Weld Neck Flanges | Ring Type Joint Weld Neck Flanges |
| Drawing Weld Neck Flanges | Square Weld Neck Flanges |
| Nipo Weld Neck Flanges | Reducing Weld Neck Flanges |
| Forged Weld Neck Flanges | ASME B16.47 Series A Weld Neck Flanges |
| ASME B16.47 Series B Weld Neck Flanges | ANSI B16.36 Orifice Weld Neck Flanges |
| 150Lbs Weld Neck Flanges | 300Lbs Weld Neck Flanges |
| 600Lbs Weld Neck Flanges | 900Lbs Weld Neck Flanges |
| 1500Lbs Weld Neck Flanges | 2500Lbs Weld Neck Flanges |
| DIN Weld Neck Flanges PN6-PN40 | Stainless Steel Weld Neck Flanges |
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Weld Neck Flanges Exporters & Suppliers
Exporting Weld Neck Flanges to Countries
We are exporting Weld Neck Flanges to Kuwait, Yemen, Slovakia, Iran, Angola, Portugal, Romania, Serbia, China, Saudi Arabia, Afghanistan, Croatia, Lithuania, Poland, Zimbabwe, Peru, Macau, Japan, Philippines, Singapore, Mexico, Mongolia, Hong Kong, Norway, Israel, Bangladesh, Bhutan, Kenya, South Korea, Switzerland, Thailand, Gabon, Italy, Mexico, Sri Lanka, Netherlands, Turkey, Czech Republic, Tibet, Australia, Morocco, Nepal, Denmark, Iran, United Arab Emirates, Jordan, Belarus, Russia, Chile, Ukraine, Oman, Kazakhstan, Taiwan, Argentina, Finland, Chile, Ghana, Azerbaijan, Brazil, Ireland, Nigeria, Indonesia, Ecuador, Lebanon, Gambia, Sweden, Bulgaria, Hungary, India, United Kingdom, Vietnam, Greece, United States, France, Spain, Libya, Pakistan, Canada, Namibia, Poland, Bahrain, Bolivia, Venezuela, Qatar, Iraq, Austria, Belgium, Nigeria, Germany, South Africa, Malaysia, Egypt, Algeria, Costa Rica, Estonia, Trinidad & Tobago,Tunisia, Puerto Rico, New Zealand, Colombia. We can export almost to any country.
Industries We Serve
We are supplying Weld Neck Flanges to Chemicals, Petrochemicals, Oil & Natural Gas Organization, Fats, Fertilizers, Sugar Mills & Distilleries, Cement Industries, Ship Builders, Paper Industries, Pumps, Automation, Paints, Steel Industries, etc.