Tirupati Containers Private Limited Tirupati Containers Private Limited
Tirupati Containers Private LimitedTirupati Containers Private Limited
Tirupati Containers Private Limited
Tirupati Containers Private Limited
Tirupati Containers Private LimitedTirupati Containers Private Limited
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Tirupati Containers Private Limited

Erw Black Tubes & Galvanised Steel Tubes

Our range of galvanized steel tubes are covered by a layer of zinc & are used for varied applications. These are available in various size and shapes based on the customers requirements. These tubes are natural corrosion resistant and hold functional durability, even in outdoor environments. Apart from preventing water corrosion, it is equally effective in dry, indoor environments.
Black And Hot Dipped Galvanized Steel Pipes Astm-A-53 (Sch.40) Grade A & B
Nominal Size Outside Diameter Wall Thickness Weights No. Of Pieces Per Bundle
Black Pipes Plain End
mm inch mm inch mm inch Kg/mtr lbs/ft ft/ton  
15 1/2 21.3 0.84 2.77 0.109 1.27 0.85 2592 120 
20 3/4 26.7 1.05 2.87 0.113 1.69 1.13 1945 90
25 1 33.4 1.315 3.38 0.133 2.5 1.68 1311 60
32 1.1/4 42.2 1.66 3.56 0.14 3.39 2.27 967 42
40 1.1/2 48.3 1.9 3.68 0.145 4.05 2.72 810 36
50 2 60.3 2.375 3.91 0.154 5.44 3.65 603 26
65 2.1/2 73 2.875 5.16 0.203 8.63 5.79 380 18
80 3 88.9 3.5 5.49 0.216 11.29 7.58 291 14
90 3.1/2 101.6 4 5.74 0.226 13.57 9.11 242 12
100 4 114.3 4.5 6.02 0.237 16.07 10.79 204 10
125 5 141.3 5.56 6.55 0.258 21.77 14.62 151 8
150 6 168.3 6.625 7.11 0.28 28.26 18.97 116 6
200 8 219.1 8.625 8.18 0.322 42.55 28.55 77 4


Technical Data Of Welded Mild Steel Pipes (Black And Galvanised) Conforming To Bs :1387 Of 1985
Nominal Bore Outside Diameter Wall Thickness Weight of Black Pipes Weight of Galvanised Pipes (Calculated)
Max. Min. Plain End Screwed & Socketed Plain End Screwed & Socketed
inch mm inch mm inch mm inch mm Kg/mtr mtr/ton ft/ton Kg/mtr mtr/ton ft/ton Kg/mtr mtr/ton ft/ton Kg/mtr mtr/ton ft/ton
1/2 15 0.843 21.4 0.827 21 0.079 2 0.947 1056 3465 0.956 1046 3432 1 1000 3281 1.009 991 3251
3/4 20 1.059 26.9 1.039 26.4 0.091 2.3 1.38 725 2379 1.39 719 2359 1.44 694 2277 1.45 690 2264
1 25 1.331 33.8 1.307 33.2 0.102 2.6 1.98 505 1657 2 500 1641 2.06 485 1591 2.08 481 1578
11/4 32 1.673 42.5 1.65 41.9 0.102 2.6 2.54 394 1293 2.57 389 1276 2.64 379 1243 2.67 375 1230
11/2 40 1.906 48.4 1.882 47.8 0.114 2.9 3.23 310 1017 3.27 306 1004 3.34 299 981 3.38 296 971
2 50 2.37 60.2 2.346 59.6 0.114 2.9 4.08 245 804 4.15 241 791 4.22 237 778 4.29 233 764
21/2 65 2.992 76 2.961 75.2 0.126 3.2 5.71 175 574 5.83 172 564 5.89 170 558 6.01 166 545
3 80 3492 88.7 3.461 87.9 0.126 3.2 6.72 149 489 6.89 145 476 6.93 144 472 7.1 141 463
4 100 4.484 113.9 4.449 113 0.142 3.6 9.75 103 338 10 100 328 10.03 100 328 10.28 97 318
1/2 15 0.854 21.7 0.831 21.1 0.102 2.6 1.21 826 2710 1.22 820 2690 1.26 794 2605 1.27 787 2582
3/4 20 1.071 27.2 1.047 26.6 0.102 2.6 1.56 641 2103 1.57 637 2090 1.62 617 2024 1.63 613 2011
1 25 1.346 34.2 1.315 33.4 0.126 3.2 2.41 415 1362 2.43 412 1352 2.49 402 1319 2.51 398 1306
11/4 32 1.689 42.9 1.657 42.1 0.126 3.2 3.1 323 1060 3.13 319 1047 3.2 313 1027 3.23 310 1017
11/2 40 1.921 48.8 1.89 48 0.126 3.2 3.57 280 919 3.61 277 909 3.68 272 892 3.72 269 883
2 50 2.394 60.8 2.354 59.8 0.142 3.6 5.03 199 653 5.1 196 643 5.17 193 633 5.24 191 627
21/2 65 3.016 76.6 2.969 75.4 0.157 3.6 6.43 156 512 6.55 153 502 6.61 151 495 6.73 149 489
3 80 3.524 89.5 3.469 88.1 0.177 4 8.37 119 390 8.54 117 384 8.58 117 384 8.75 114 374
4 100 4.524 114.9 4.461 113.3 0.177 4.5 12.2 82 269 12.5 80 262 12.48 80 262 12.78 78 256
5 125 5.535 140.6 5.461 138.7 0.197 5 16.6 60 197 17.1 58 190 16.94 59 194 17.44 57 187
6 130 6.539 166.1 6.461 164.1 0.197 5 19.7 51 167 20.3 49 161 20.1 50 164 20.7 48 157
1/2 15 0.854 21.7 0.831 21.1 0.126 3.2 1.44 694 2277 1.45 690 2264 1.49 671 2202 1.5 667 2188
3/4 20 1.071 27.2 1.047 26.6 0.126 3.2 1.87 535 1755 1.88 535 1755 1.93 518 1700 1.94 515 1690
1 25 1.346 34.2 1.315 33.4 0.157 4 2.94 340 1116 2.96 340 1116 3.01 332 1089 3.03 330 1083
11/4 32 1.689 42.9 1.657 42.1 0.157 4 3.8 263 863 3.83 263 863 3.9 256 840 3.93 254 833
11/2 40 1.921 48.8 1.89 48 0.157 4 4.38 228 748 4.42 228 748 4.49 223 732 4.53 221 725
2 50 2.394 60.8 2.354 59.8 0.177 4.5 6.19 162 532 6.26 162 532 6.33 158 518 6.4 156 512
21/2 65 3.016 76.6 2.969 75.4 0.177 4.5 7.93 126 413 8.05 126 413 8.11 123 404 8.23 122 400
3 80 3.524 89.5 3.469 88.1 0.197 5 10.3 97 318 10.5 97 318 10.51 95 312 10.71 93 305
4 100 4.524 114.9 4.461 113.3 0.213 5.4 14.5 69 226 14.8 69 226 14.77 68 223 15.07 66 217
5 125 5.535 140.6 5.461 138.7 0.213 5.4 17.9 56 184 18.4 56 184 18.24 55 180 18.74 53 174
6 150 6.539 166.1 6.461 164.1 0.213 5.4 21.3 47 154 21.9 47 154 21.7 46 151 22.3 45 148


TECHNICAL DATA OF BLACK AND GAVANISED STEEL PIPES CONFORMING TO BS 1139 SECTION 1.1 : 1990
Size Thickness Nominal Mass Meters/Tonne Feet/Tonne No. of Pipes Packed Per Standard Bundle  (1 Tonne Approx.)
Outside Diameter Black Plain End Galvanised Plain End Calculated Black Plain End Calculated Galvanised Plain End Calculated Plain Black End Calculated Plain Galvanised End Calculated
mm inch mm inch Kg/mtr Kg/mtr Meters Meters Feet Feet  
48.3 1.9 4 0.158 4.37 4.48 229 223 751 732 37120 
Standard length 6.40 meters +/- 0.05 meters or as per customers requirements


Black Steel Pipes as per DIN 2439, 2440 & 2441
Nominal Bore N W Outside diameter Light tubes
(DIN 2439)
Medium tubes
(DIN 2440)
Heavy tubes
(DIN 2441)
Wall thickness Weight (plain ends) thickness Wall (plain ends) Weight thickness Wall (plain ends) Weight
Inches mm d S kg/m S kg/m S kg/m
1/2 15 21.3 2.35 1.1 2.65 1.22 3.25 1.45
3/4 20 26.9 2.35 1.41 2.65 1.58 3.25 1.9
1 25 33.7 2.9 2.21 3.25 2.44 4.05 2.97
1 1/4 32 42.4 2.9 2.84 3.25 3.14 4.05 3.84
1 1/2 40 48.3 2.9 3.26 3.25 3.61 4.05 4.43
2 50 60.3 3.25 4.56 3.65 5.1 4.5 6.17
2 1/2 65 76.1 3.25 5.81 3.65 6.51 4.5 7.9
3 80 88.9 3.65 7.65 4.05 8.47 4.85 10.1
4 100 114.3 4.05 11 4.5 12.1 5.4 14.4
5 125 139.7 4.5 15 4.85 16.13 5.4 17.9
6 150 165.1 4.5 17.82 4.85 19.17 5.4 21.3


Technical Data of Tubes conforming to EN : 10255
Normal Bore Outside Dia. (mm) Thickness (mm) Mass of Black Tube (Kg./Mtr)
           (mm) (inch)
L I G H T 15 ½ 21.4 2 0.947
20 ¾ 26.9 2.3 1.38
25 1 33.8 2.6 1.98
32 42.5 2.6 2.54
40 48.4 2.9 3.23
50 2 60.2 2.9 4.08
65 76 3.2 5.71
80 3 88.7 3.2 6.72
100 4 113.9 3.6 9.75
Normal Bore Outside Dia. (mm) Thickness (mm) Mass of Black Tube (Kg./Mtr)
           (mm) (inch)
M E D I U M 15 ½ 21.7 2.6 1.21
20 ¾ 27.2 2.6 1.56
25 1 34.2 3.2 2.41
32 42.9 3.2 3.1
40 48.8 3.2 3.57
50 2 60.8 3.6 5.03
65 76.6 3.6 6.43
80 3 89.5 4 8.37
100 4 114.9 4.5 12.2
Normal Bore Outside Dia. (mm) Thickness (mm) Mass of Black Tube (Kg./Mtr)
           (mm) (inch)
H E A V Y 15 ½ 21.7 3.2 1.44
20 ¾ 27.2 3.2 1.87
25 1 34.2 4 2.94
32 42.9 4 3.8
40 48.8 4 4.38
50 2 60.8 4.5 6.19
65 76.6 4.5 7.93
80 3 89.5 5 10.3
100 4 114.9 5.4 14.5


Iso Standard For Mild Steel Tubes [Extract From Iso-65-2981 (E)]
DN Designation of thread Outside Diameter D mm Thickness (T) and masses per unit length (M) according to the series
Heavy Series Medium Series Light Series 1 Light Series 2
T mm Screwed Socketed M kg/m T mm Screwed Socketed M kg/m T mm Screwed Socketed M kg/m T mm Screwed Socketed M kg/m
15 ½ 21.3 3.2 1.45 2.6 1.22 2.3 1.09 2 0.956
20 ¾ 26.9 3.2 1.88 2.6 1.57 2.3 1.4 2.3 1.39
26 1 33.7 4 2.95 3.2 2.43 2.9 2.22 2.6 2
32 42.4 4 3.82 3.2 3.13 2.9 2.85 2.6 2.57
40 48.3 4 4.41 3.2 3.6 2.9 3.28 2.9 3.27
50 2 60.3 4.5 6.26 3.6 5.1 3.2 4.56 2.9 4.15
65 76.1 4.5 8.05 3.6 6.54 3.2 5.85 3.2 5.83
80 3 88.9 5 10.5 4 8.53 3.6 7.72 3.2 6.89
100 4 114.3 5.4 14.8 4.5 12.5 4 11.1 3.6 10
125 5 139.7 5.4 18.4 5 17.1        
150 6 165.1 5.4 21.9 5 20.4        


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