Tata Pipes is a market leader of galvanized steel pipe in India. Tata Pipes manufactures Galvanized Iron (GI) Pipes in a range of sizes and thickness as per IS: 1239 and IS: 3589, ASTM standard and Inspection protocols laid by Bureau of Indian Standards (BIS) as per licensing norms. Galvanized Pipes from Tata Steel – SBU are manufactured using high quality, environment-friendly in-house steel HR strips that are manufactured at Tata Steel’s modern Hot Strip Mill. Tata Pipes uses the High Frequency Induction Welding (HFIW) Process or Cold Process to manufacture GI Pipes followed by a hi-tech hot-dip galvanizing process in which the tubes are pickled to remove the impurities before galvanizing.
GI Pipes
Specification of Pipes: IS 1239
Dimensions and nominal mass of Steel Pipes – Light, Medium & Heavy Conforming to IS:P 1239 (part-I) 2004
| Nominal Bore (mm) | Class or Category | Outside Diameter (mm) | Thickness (mm) | Nominal Mass of Tube Black & Galvanised | ||||
| Max | Min | Plain End Kg/m | Screwed & Socketed Kg/m | Plain End Metre/Ton | Screwed & Socketed Metre/Ton | |||
| 15 | L | 21.4 | 21.0 | 2.0 | 0.947 | 0.956 | 1056 | 1046 |
| M | 21.8 | 21.0 | 2.6 | 1.21 | 1.22 | 826 | 820 | |
| H | 21.8 | 21.0 | 3.2 | 1.44 | 1.45 | 594 | 690 | |
| 20 | L | 26.9 | 26.4 | 2.3 | 1.38 | 1.39 | 725 | 719 |
| M | 27.3 | 26.5 | 2.6 | 1.56 | 1.57 | 641 | 637 | |
| H | 27.3 | 26.5 | 3.2 | 1.87 | 1.88 | 535 | 532 | |
| 25 | L | 33.8 | 33.2 | 2.6 | 1.98 | 2.00 | 505 | 500 |
| M | 34.2 | 33.3 | 3.2 | 2.41 | 2.43 | 415 | 412 | |
| H | 34.2 | 33.3 | 4.0 | 2.93 | 2.95 | 341 | 339 | |
| 32 | L | 42.5 | 41.9 | 2.6 | 2.54 | 2.57 | 394 | 389 |
| M | 42.9 | 42.0 | 3.2 | 3.10 | 3.13 | 323 | 319 | |
| H | 42.9 | 42.0 | 4.0 | 3.79 | 3.82 | 264 | 262 | |
| 40 | L | 48.4 | 47.8 | 2.9 | 3.23 | 3.27 | 310 | 306 |
| M | 48.8 | 47.9 | 3.2 | 3.56 | 3.60 | 281 | 278 | |
| H | 48.8 | 47.9 | 4.0 | 4.37 | 4.41 | 229 | 227 | |
| 50 | L | 60.2 | 59.6 | 2.9 | 4.08 | 4.15 | 245 | 241 |
| M | 60.8 | 59.7 | 3.6 | 5.03 | 5.10 | 199 | 196 | |
| H | 60.8 | 59.7 | 4.5 | 6.19 | 6.26 | 162 | 160 | |
| 65 | L | 76.0 | 75.2 | 3.2 | 5.71 | 5.83 | 175 | 172 |
| M | 76.6 | 75.3 | 3.6 | 6.42 | 6.54 | 156 | 153 | |
| H | 76.6 | 75.3 | 4.5 | 7.93 | 8.05 | 126 | 124 | |
| 80 | L | 88.7 | 87.9 | 3.2 | 6.72 | 6.89 | 149 | 145 |
| M | 89.5 | 88.0 | 4.0 | 8.36 | 8.53 | 120 | 117 | |
| H | 89.5 | 88.0 | 4.8 | 9.90 | 10.1 | 101 | 96 | |
| 100 | L | 113.9 | 113.0 | 3.6 | 9.75 | 10.0 | 103 | 100 |
| M | 115.0 | 113.1 | 4.5 | 12.2 | 12.5 | 82 | 80 | |
| H | 115.0 | 113.1 | 5.4 | 14.5 | 14.8 | 89 | 68 | |
| 125 | M | 148.8 | 138.5 | 4.8 | 15.9 | 16.4 | 63 | 61 |
| H | 148.8 | 138.5 | 5.4 | 17.9 | 18.4 | 56 | 54 | |
| 150 | M | 166.5 | 163.9 | 4.8 | 18.9 | 19.5 | 53 | 54 |
| H | 166.5 | 163.9 | 5.4 | 21.3 | 21.9 | 47 | 46 | |