Stub Ends
We manufacture and supply Buttweld Stub Ends for easy assembly and disassembly of pipelines. These are typically used with Lap Joint Flanges, ensuring reliable performance and maintenance flexibility.
- Type A Stub End – For Lap Joint Flanges
- Type B Stub End – For Slip-On Flanges
- Type C Stub End – Universal Design
| Short Pattern / Long Pattern | |
|---|---|
| Types | Short Pattern / Long Pattern |
| Size | 1/2" NB TO 48" NB (Seamless, Welded and ERW) |
| Wall Thickness | Sch. 5S To Sch. XXS Etc. |
| Stainless Steel | ASTM A403 WP 304 / 304L / 304H / 316 / 316L / 321 / 904 / 904L Etc. |
| Carbon Steel | ASTM A234 WPB / A420 WPL6 / MSS-SP-43 Etc. |
| Alloy Steel | ASTM A234 WP5 / WP9 / WP11 / WP22 / WP91 Etc. |
| Duplex / Super Duplex | ASTM A182 F51 / F53 / F55 |
| Others Non-Ferrous / Exotic Grades | Monel, Inconel, Hastelloy, Copper Nickel (CuNi10Fe1, 6Mn), 70/30 Copper Nickel (CuNi30Fe), DOW Copper, Aluminium Etc. |
| ASME / ANSI | B16.9, B16.28, B16.11 |
| MSS-SP | 43, 75 |
| Other Standards | DIN / JIS / BS / EN: 2605, B2313, 1640, 10253 or Customized as per client’s requirement |
| Nominal Pipe Size (NPS) | Outside Diameter of Barrel, mm (in.) | Long Pattern Length, F, mm (in.) | Short Pattern Length, F, mm (in.) | Radius of Fillet, R, mm (in.) | Diameter of Lap, G, mm (in.) | |
|---|---|---|---|---|---|---|
| Max. | Min. | |||||
| ½ | 22.8 (0.896) | 20.5 (0.809) | 76 (3.00) | 51 (2.00) | 3 (0.12) | 35 (1.38) |
| ¾ | 28.1 (1.106) | 25.9 (1.019) | 76 (3.00) | 51 (2.00) | 3 (0.12) | 43 (1.69) |
| 1 | 35.0 (1.376) | 32.6 (1.284) | 102 (4.00) | 51 (2.00) | 3 (0.12) | 51 (2.00) |
| 1¼ | 43.6 (1.716) | 41.4 (1.629) | 102 (4.00) | 51 (2.00) | 5 (0.19) | 64 (2.50) |
| 1½ | 49.9 (1.965) | 47.5 (1.869) | 102 (4.00) | 51 (2.00) | 6 (0.25) | 73 (2.88) |
| 2 | 62.4 (2.456) | 59.5 (2.344) | 152 (6.00) | 64 (2.50) | 8 (0.31) | 92 (3.62) |
| 2½ | 75.3 (2.966) | 72.2 (2.844) | 152 (6.00) | 64 (2.50) | 8 (0.31) | 105 (4.12) |
| 3 | 91.3 (3.596) | 88.1 (3.469) | 152 (6.00) | 64 (2.50) | 10 (0.38) | 127 (5.00) |
| 3½ | 104.0 (4.096) | 100.8 (3.969) | 152 (6.00) | 76 (3.00) | 10 (0.38) | 140 (5.50) |
| 4 | 116.7 (4.593) | 113.5 (4.469) | 152 (6.00) | 76 (3.00) | 11 (0.44) | 157 (6.19) |
| 5 | 144.3 (5.683) | 140.5 (5.532) | 203 (8.00) | 76 (3.00) | 11 (0.44) | 186 (7.31) |
| 6 | 171.3 (6.743) | 167.5 (6.594) | 203 (8.00) | 89 (3.50) | 13 (0.50) | 216 (8.50) |
| 8 | 222.1 (8.743) | 218.3 (8.594) | 203 (8.00) | 102 (4.00) | 13 (0.50) | 270 (10.62) |
| 10 | 277.2 (10.913) | 272.3 (10.719) | 254 (10.00) | 127 (5.00) | 13 (0.50) | 324 (12.75) |
| 12 | 328.0 (12.913) | 323.1 (12.719) | 254 (10.00) | 152 (6.00) | 13 (0.50) | 381 (15.00) |
| 14 | 359.9 (14.170) | 354.8 (13.969) | 305 (12.00) | 152 (6.00) | 13 (0.50) | 413 (16.25) |
| 16 | 411.0 (16.180) | 405.6 (15.969) | 305 (12.00) | 152 (6.00) | 13 (0.50) | 470 (18.50) |
| 18 | 462.0 (18.190) | 456.0 (17.969) | 305 (12.00) | 152 (6.00) | 13 (0.50) | 533 (21.00) |
| 20 | 514.0 (20.240) | 507.0 (19.969) | 305 (12.00) | 152 (6.00) | 13 (0.50) | 584 (23.00) |
| 22 | 565.0 (22.240) | 558.0 (21.969) | 305 (12.00) | 152 (6.00) | 13 (0.50) | 641 (25.25) |
| 24 | 616.0 (24.240) | 609.0 (23.969) | 305 (12.00) | 152 (6.00) | 13 (0.50) | 692 (27.25) |
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