Nominal Outside Diameter
mm
Tolerance on Outside Diameter Class 1
2.5kgf/cm2
(68 ft water head)
Class 2
4kgf/cm2 (60PSI)
(140 ft water head)
Class3
6kgf/cm2 (90PSI)
(200 ft water head)
Class4
8kgf/cm2 (120PSI)
(270 ft water head)
Class5
10kgf/cm2 (150PSI)
(340 ft water head)
Class6
10kgf/cm2 (180PSI)
(400 ft water head)
    Min
mm
Max
mm
Wt./mtr.
kg

Min
mm

Max
mm

Wt./mtr.
kg

Min
mm

Max
mm

Wt./mtr.
kg

Min
mm

Max
mm

Wt./mtr.
kg

Min
mm

Max
mm

Wt./mtr.
kg

Min
mm

Max
mm

Wt./mtr.
kg

20 +0.3 - - - - - - - - - - - - 1.1 1.5 0.111 1.4 1.8 0.111
25 +0.3 - - - - - - - - - 1.2 1.6 0.152 1.4 1.8 0.170 1.7 2.1 0.201
32 +0.3 - - - - - - - - - 1.5 1.9 0.236 1.8 2.2 0.270 2.2 2.7 0.332
40 +0.3 - - - - - - 1.4 1.8 0.281 1.8 2.2 0.348 2.2 2.7 0.404 2.8 3.3 0.516
50 +0.3 - - - 1.2 1.6 0.300 1.7 2.1 0.418 2.3 2.8 0.553 2.8 3.3 0.647 3.4 4.0 0.783
63 +0.3 - - - 1.5 1.9 0.474 2.2 2.7 0.668 2.8 3.3 0.835 3.5 4.1 1.010 4.3 5.0 1.239
75 +0.3 - - - 1.8 2.2 0.668 2.6 3.1 0.931 3.4 4.0 1.204 4.2 4.9 1.443 5.1 5.9 1.745
90 +0.3 1.3 1.7 0.606 2.1 2.6 0.944 3.1 3.7 1.334 4.0 4.6 1.682 5.0 5.7 2.048 6.1 7.1 2.512
110 +0.4 1.6 2.0 0.894 2.5 3.0 1.369 3.7 4.3 1.938 4.9 5.6 2.510 6.1 7.1 3.077 7.5 8.7 3.767
125 +0.4 1.8 2.2 1.082 2.9 3.4 1.688 4.3 5.0 2.462 5.6 6.4 3.258 6.9 8.0 3.780 8.5 9.8 4.837
140 +0.5 2.0 2.4 1.413 3.2 3.8 2.223 4.8 5.5 3.178 6.3 7.3

4.134

7.7 8.9 4.955 9.5 11.0 6.070
160 +0.5 2.3 2.8 1.884 3.7 4.3 2.947 5.4 6.2 4.139 7.2 8.3 5.384 8.8 10.2 6.456 10.9 12.6 7.949
180 +0.6 2.6 3.1 2.268 4.2 4.9 3.523 6.1 7.1 5.030 8.0 9.2 6.727 9.9 11.4 7.920 12.2 14.1 10.014
200 +0.6 `2.9 3.4 2.945 4.6 5.3 4.563 6.8 7.9 6.464 8.9 10.3 8.342 11.0 12.7 10.135 13.6 15.7 12.391
225 +0.7 3.3 3.9 3.507 5.2 6.0 5.406 7.6 8.8 7.730 10.0 11.5 10.510 12.4 14.3 12.257 15.3 17.6 15.655
250 +0.8 3.6 4.2 4.320 5.7 6.5 6.572 8.5 9.8 9.677 11.2 12.9 13.085 13.8 15.9 15.308 17.0 19.6 19.350
280 +0.9 4.1 4.8 5.444 6.4 7.4 8.273 9.5 11.0 12.049 12.5 14.4 16.360 15.4 17.8 19.078 19.0 21.9 24.223
315 +1.0 4.6 5.3 6.955 7.2 8.3 10.475 10.7 12.4 13.352 14.0 16.1 20.535 17.3 19.9 24.105 21.4 24.7 60.650
355 +1.1 5.1 5.9 8.771 8.1 9.4 13.824 12.0 13.8 20.137 15.8 18.2 26.217 19.6 22.6 32.007 24.1 27.8 38.967
400 +1.2 5.8 6.7 11.228 9.1 10.5 17.448 13.5 15.6 25.590 17.8 20.5 33.280 22.0 25.3 40.373 27.2 31.3 49.486