BS 1387 : 1967 Steel Tube and Tubulare (Light, Medium ,Heavy) -
IS 1239 : 1967
 
Nominal Bore Outside Diameter Thickness Weight of Black Tube
max. min. Plain End
in
 		 in mm in mm in mm lb/ft kg/fl kg/m
Light *1/8 0.396 10.1 .387 9.7 .072 1.8 .243 0.11 .361
  *1/4 0.532 13.6 .518 13.2 .072 1.8 .347 0.157 .517
  *3/8 0.671 17.1 .656 16.7 .072 1.8 .453 0.205 .674
  1/2   21.4 .825 21.0 .080 2 .640 0.29 .952
  3/4. 1.059 26.9 1.041 26.4 .092 2.35 .944 428 1.41
  1  1.328 33.8 1.309 33.2 .104 2.65 1.35 0.612 2.01
  11/4 1.67 42.5 1.650 41.9 .104 2.65 1.73 0.785 2.58
  11/2 1.903 48.4 1.882 47.8 .116 2.9 2.19 0.993 3.25
  2  2.37 60.2 2.347 59.6 .116 2.9 2.76 1.25 4.11
  21/2 2.991 76.0 2.960 75.2 .128 3.25 3.90 1.77 5.80
  3  30491 88.7 3.460 87.9 .128 3.25 4.58 2.08 6.81
  4  40481 113.9 4.450 113.0 .144 3.65 6.64 3.01 9.89
Medium *1/8 411 10.4 .386 9.8 .080 2.0 .273 .124 .407
  *1/4 0.547 13.9 .522 13.3 .092 2.35 437 0.198 .650
  * 3/8 0.685 17.4 .660 16.8 .092 2.35 0.573 0.26 .852
  1/2 0.856 21.7 .831 21.1 .104 2.65 0.822 0.373 1.22
  3/. 1.072 27.2 1.047 26.6 .104 2.65 1.06 481 1.58
  1  1.346 34.2 1.316 33.4 .128 3.25 1.64 0.744 2.44
  1'/. 1.687 42.9 1.657 42.1 .128 3.25 2.11 0.957 3.14
  1'/2 1.919 48.8 1.889 48.0 .128 3.25 2.34 1.1 3.61
  -2 2.394 60.8 2.354 59.8 .144 3.65 3.42 1.55 5.10
  2'/2 3.014 76.6 2.969 75.4 .144 3.65 4.38 1.99 6.51
  3  3.524 89.5 3.469 88.1 .160 4.05 5.69 2.58 8.47
  4
 4.524 114.9 4.459 113.3 .176 4.5 8.14 3.69 12.1
  5
 5.534 140.6 5.459 138.7 .192 4.85 10.9 4.94 16.2
  6 6.539 166.1 6.459 164.1 .192 4.85 12.9 5.85 19.2
Heavy *1/8 .411 10.4 .386 9.8 104 2.65 .331 .150 .493
  *1/4 .547 13.9 .522 13.3 .116 2.9 .517 .235 .769
  * 3/8 .685 17.4 .660 16.8 .116 2.9 0.686 .311 1.02
  1/2 .856 21.7 .831 21.1 .128 3.25 0.977 .443 1.45
  3/4 1.072 27.2 1.047 26.6 .128 3.25 1.27 .576 1.9
  1 1.346 34.2 1.316 33.4 .160 4.05 2.00 .907 2.97
  11/4 1.687 42.9 1.657 42.1 .160 4.05 2.58 1.17 3.84
  11/2 1.919 48.8 1.889 48.0 .160 4.05 2.98 1.35 4.43
  2 2.394 60.8 2.354 59.8 .176 4.5 4.14 1.89 6.17
  21/2 3.014 76.6 2.969 75.4 .176 4.5 5.31 2.41 7.90
  3 3.524 89.5 3.469 88.1 .192 4.85 6.76 3.07 10.1
  4 4.524 114.9 4.459 113.3 .212 5.4 9.71 4.40 14.4
  5 5.534 140.6 5.459 138.7 .212 5.4 12.0 5.44 17.8
  6 6.539 166.1 6.459 164.1 .212 5.4 14.3 6.49 21.2
 
 
 
UNIQUE CORPORATION