One of The Oldest manufacturers, suppliers & exporter of Stainless Steel Fittings & Flanges, Alloy Steel Fittings & Flanges, Carbon Steel Fittings & Flanges Since 1987.
One of The Oldest manufacturers, suppliers & exporter of Stainless Steel Fittings & Flanges, Alloy Steel Fittings & Flanges, Carbon Steel Fittings & Flanges Since 1987.
Fitwel Industries LLP is an ISO Certified Organization use to manufacture, supply, and export Duplex Steel Weld Neck Flange in India , Super Duplex Weld Neck Flanges, Duplex WNRF Flange, Super Duplex WNRF flange, ASME B16.9 Super duplex steel weld neck flange in Mumbai India. We have extensive experience in supplying UNS s31803/s32205 & UNS s32750/s32760 Weld Neck Flange are stocked or available in the following range of sizes and materials for the petrochemical, oil, gas, and allied industries. Weld Neck Flange can be assembled and disassembled easily with Pipes.
The Duplex Steel/Super Duplex Steel weld neck flange dimensions are covered in ASME B16.5 – which covers Pipe Flanges and Flanged Fittings for size NPS ½” to 24” for above NPS 26” to 60” it should be as per ASME B16.47. In case, the ending points do not match, the inner diameter can be ground out to match the larger bore pipe. An integral flange is suitable where high pressure, extreme temperatures, sheer impact, and vibratory stresses apply. Get in touch for any variety of WNRF Flange at an affordable price in India and a large source of high-quality ASME B16.47 Welding Neck Flange at the best price available in Mumbai, India.
Standard : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Size : 1/2" (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.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
BS : BS4504 , BS4504, BS1560, BS10
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
Duplex & Super Duplex Steel Slip On Flanges :ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
All dimensions are in "mm" unless noted otherwise.
| NPS | DIA D |
THK B |
DIA A |
DIA OD |
HEIGHT H |
DIA K |
DIA L |
| 1/2 | 3.75 | 0.56 | 1.5 | 0.84 | 2.06 | 2.62 | 5/8 |
| 3/4 | 4.62 | 0.62 | 1.88 | 1.05 | 2.25 | 3.25 | 3/4 |
| 1 | 4.88 | 0.69 | 2.12 | 1.32 | 2.44 | 3.5 | 3/4 |
| 1¼ | 5.25 | 0.81 | 2.5 | 1.66 | 2.62 | 3.88 | 3/4 |
| 1½ | 6.12 | 0.88 | 2.75 | 1.9 | 2.75 | 4.5 | 7/8 |
| 2 | 6.5 | 1 | 3.31 | 2.38 | 2.88 | 5 | 3/4 |
| 2½ | 7.5 | 1.12 | 3.94 | 2.88 | 3.12 | 5.88 | 7/8 |
| 3 | 8.25 | 1.25 | 4.62 | 3.5 | 3.25 | 6.62 | 7/8 |
| 3½ | 9 | 1.38 | 5.25 | 4 | 3.38 | 7.25 | 1 |
| 4 | 10 | 1.38 | 5.75 | 4.5 | 3.5 | 7.88 | 1 |
| 5 | 11 | 1.5 | 7 | 5.56 | 4 | 9.25 | 1 |
| 6 | 12.5 | 1.62 | 8.12 | 6.63 | 4.06 | 10.62 | 1 |
| 8 | 15 | 1.88 | 10.25 | 8.63 | 4.62 | 13 | 1.1/8 |
| 10 | 17.5 | 2.12 | 12.62 | 10.75 | 4.88 | 15.25 | 1¼ |
| 12 | 20.5 | 2.25 | 14.75 | 12.75 | 5.38 | 17.75 | 1.3/8 |
| 14 | 23 | 2.38 | 16.75 | 14 | 5.88 | 20.25 | 1.3/8 |
| 16 | 25.5 | 2.5 | 19 | 16 | 6 | 22.5 | 1½ |
| 18 | 28 | 2.62 | 21 | 18 | 6.5 | 24.75 | 1½ |
| 20 | 30.5 | 2.75 | 23.12 | 20 | 6.62 | 27 | 1.5/8 |
| 24 | 36 | 3 | 27.62 | 24 | 6.88 | 32 | 1.7/8 |
| NPS | NO OF BOLT HOLES |
DIA STUD BOLTS |
LENGTH STUD BOLTS |
| 1/2 | 4 | 1/2 | 3 |
| 3/4 | 4 | 5/8 | 3.5 |
| 1 | 4 | 5/8 | 3.5 |
| 1¼ | 4 | 5/8 | 3.75 |
| 1½ | 4 | 3/4 | 4.25 |
| 2 | 8 | 5/8 | 4.25 |
| 2½ | 8 | 3/4 | 4.75 |
| 3 | 8 | 3/4 | 5 |
| 3½ | 8 | 7/8 | 5.5 |
| 4 | 8 | 7/8 | 5.5 |
| 5 | 8 | 7/8 | 5.75 |
| 6 | 12 | 7/8 | 6 |
| 8 | 12 | 1 | 6.75 |
| 10 | 16 | 1.1/8 | 7.5 |
| 12 | 16 | 1¼ | 8 |
| 14 | 20 | 1¼ | 8.25 |
| 16 | 20 | 1.3/8 | 8.75 |
| 18 | 24 | 1.3/8 | 9 |
| 20 | 24 | 1½ | 9.5 |
| 24 | 24 | 1¾ | 10.5 |
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