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Dimensions and weight of ERW Black & Galvanized Steel Tubes as per IS:1239 (Part-1) 1990 Equivalent to B.S:1387-1987 |
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| Nominal Bore (NB) | Series | Outside Diameter | Wall Thickness | Plain Ends | Screwed & Socketed | |||||
| mm | inch | Min mm | Max mm | mm | SWG | Kg/Mtr | Mtrs/Tone | Kg/Mtr | Mtrs/Tone | |
| 15 | (1/2") | L | 21.00 | 21.40 | 2.00 | 14 | 0.947 | 1056 | 0.956 | 1046 |
| H | 21.00 | 21.80 | 2.60 | 12 | 1.21 | 826 | 1.22 | 820 | ||
| M | 21.00 | 21.80 | 3.20 | 10 | 1.44 | 694 | 1.45 | 690 | ||
| 20 | (3/4") | L | 26.40 | 26.90 | 2.30 | 13 | 1.38 | 725 | 1.39 | 719 |
| H | 26.50 | 27.30 | 2.60 | 12 | 1.56 | 641 | 1.57 | 637 | ||
| M | 26.50 | 27.30 | 3.20 | 10 | 1.87 | 535 | 1.88 | 532 | ||
| 25 | (1") | L | 33.20 | 33.80 | 2.60 | 12 | 1.98 | 505 | 2.00 | 500 |
| H | 33.30 | 34.20 | 3.20 | 10 | 2.41 | 415 | 2.43 | 412 | ||
| M | 33.30 | 34.20 | 4.00 | 8 | 2.93 | 341 | 2.95 | 339 | ||
| 32 | (1 1/4") | L | 41.90 | 42.50 | 2.60 | 12 | 2.54 | 394 | 2.57 | 389 |
| H | 42.00 | 42.90 | 3.20 | 10 | 3.10 | 323 | 3.13 | 319 | ||
| M | 42.00 | 42.90 | 4.00 | 8 | 3.79 | 264 | 3.82 | 262 | ||
| 40 | (1 1/2") | L | 47.80 | 48.40 | 2.90 | 11 | 3.23 | 310 | 3.27 | 306 |
| H | 47.90 | 48.80 | 3.20 | 10 | 3.56 | 281 | 3.60 | 278 | ||
| M | 47.90 | 48.80 | 4.00 | 8 | 4.37 | 229 | 4.41 | 227 | ||
| 50 | (2") | L | 59.60 | 60.20 | 2.90 | 11 | 4.08 | 245 | 4.15 | 241 |
| H | 59.70 | 60.80 | 3.60 | 9 | 5.03 | 199 | 5.10 | 196 | ||
| M | 59.70 | 60.80 | 4.50 | 7 | 6.19 | 162 | 6.26 | 160 | ||
| 65 | (2 1/2") | L | 75.20 | 76.00 | 3.20 | 10 | 5.74 | 175 | 5.83 | 172 |
| H | 75.30 | 76.60 | 3.60 | 9 | 6.42 | 156 | 6.54 | 153 | ||
| M | 75.30 | 76.60 | 4.50 | 7 | 7.93 | 126 | 8.05 | 124 | ||
| 80 | (3") | L | 87.90 | 88.70 | 3.20 | 10 | 6.72 | 149 | 6.89 | 145 |
| H | 88.00 | 89.50 | 4.00 | 8 | 8.36 | 120 | 8.53 | 117 | ||
| M | 88.00 | 89.50 | 4.80 | 6 | 9.90 | 101 | 10.40 | 96 | ||
| 100 | (4") | L | 113.00 | 113.90 | 3.60 | 9 | 9.75 | 103 | 10.00 | 100 |
| H | 113.10 | 115.00 | 4.50 | 7 | 12.20 | 82 | 12.50 | 80 | ||
| M | 113.10 | 115.00 | 5.40 | 5 | 14.50 | 69 | 14.80 | 68 | ||
| 125 | (5") | |||||||||
| H | 138.50 | 140.80 | 4.80 | 6 | 15.90 | 63 | 16.40 | 61 | ||
| M | 138.50 | 140.80 | 5.40 | 5 | 17.90 | 56 | 18.40 | 54 | ||
| 150 | (6") | |||||||||
| H | 163.90 | 163.90 | 4.80 | 6 | 18.90 | 53 | 19.50 | 51 | ||
| M | 163.90 | 166.50 | 5.40 | 5 | 21.30 | 47 | 21.90 | 46 | ||
| Tolerances :- | |||
| Thickness: | Light Tubes | : | -8% + Not Limited |
| Medium & Heavy Tubes | : | - 10% + Not Limited | |
| Weight: | 1 Single Tube (Light Series) | : | + 10% - 8% |
| 2. Single tube (Medium & Heavy Series) | : | ±10% | |
| 3. For quantities per load of 10 tons min (Light Series) | : | ±5% | |
| 4. For quantities per load of 10 tons min (Medium & Heavy Series) | : | ±7.5% | |
| Length: | Light, Medium & Heavy Tubes : Random length of 4 to 7 meters unless specified otherwise. | ||
| Production Specification :- | |||
| IS: 1239 | Mild Steel tubes, tubulars and other wrought steel fittings | ||
| (Part - I) | |||
| IS: 1161 | Mild steel tubes used for structural purpose. | ||
| IS: 3589 | Seamless or electrically welded steel pipes for water, gas & sewage. | ||
| IS: 4270 | Steel tubes used for water wells. | ||
| IS: 1978 | Specification for line pipe. | ||
| IS: 11722 | Thin walled flexible quick coupling pipes. | ||
| IS: 1387 | Screwed and socketed steel tubes and tubular. | ||