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7.4. Piping data 
Stainless steel pipe for pipe arrangement (JIS G3459-2012) 
 
Nominal 
diameter 
Outer 
diameter 
mm 
Thickness 
Schedule 
5S 
Schedule 
10S 
Schedule 
20S 
Schedule 
40 
Schedule 
80 
Schedule 
120 
Schedule 
160 
A B 
Thickness 
mm 
Thickness 
mm 
Thickness 
mm 
Thickness 
mm 
Thickness 
mm 
Thickness 
mm 
Thickness 
mm 
15 1/2 21.7  1.65  2.1 2.5 2.8 3.7  -  4.7 
20 3/4 27.2  1.65  2.1 2.5 2.9 3.9  -  5.5 
25 1 34.0  1.65  2.8  3.0 3.4 4.5  -  6.4 
32 1 1/4 42.7  1.65  2.8 3.0 3.6 4.9  -  6.4 
40 1 1/2 48.6  1.65  2.8 3.0 3.7 5.1  -  7.1 
50 2 60.5  1.65  2.8  3.5 3.9 5.5  -  8.7 
65 2 1/2 76.3  2.1  3.0 3.5 5.2 7.0  -  9.5 
80 3 89.1 2.1 3.0 4.0 5.5 7.6  -  11.1 
90 3 1/2 101.6  2.1  3.0 4.0 5.7 8.1  -  12.7 
100 4 114.3 2.1 3.0 4.0 6.0 8.6 11.1 13.5 
125 5 139.8 2.8 3.4 5.0 6.6 9.5 12.7 15.9 
150 6 165.2 2.8 3.4 5.0 7.1 11.0 14.3 18.2 
200 8 216.3 2.8 4.0 6.5  8.2  12.7 18.2 23.0 
250 10 267.4  3.4  4.0  6.5  9.3  15.1 21.4 28.6 
300 12 318.5  4.0  4.5  6.5  10.3 17.4 25.4 33.3 
350 14 355.6 - - - 11.1 19.0 27.8 35.7 
400 16 406.4 -  -  -  12.7 21.4 30.9 40.5 
450 18 457.2 -  -  -  14.3 23.8 34.9 45.2 
500 20 508.0 -  -  -  15.1 26.2 38.1 50.0 
550 22 558.8 -  -  -  15.9 28.6 41.3 54.0 
600 24 609.6 -  -  -  17.5 31.0 46.0 59.5 
650 26 660.4 -  -  -  18.9 34.0 49.1 64.2 
 
 
Polyethylene pipe for city water (JIS K6762-2004) 
 
Nominal 
diameter 
(mm) 
Outer 
diameter 
(mm) 
1st type (Soft pipe)  2nd type (Hard pipe) 
Thickness
(mm) 
Weight 
(kg/m) 
Thickness
(mm) 
Weight 
(kg/m) 
13 21.5 3.5 0.184 2.5 0.143 
20 27.0 4.0 0.269 3.0 0.217 
25 34.0 5.0 0.423 3.5 0.322 
30 42.0 5.6 0.595 4.0 0.458 
40 48.0 6.5 0.788 4.5 0.590 
50 60.0 8.0 1.216 5.0 0.829 
 
 
Galvanized steel pipe for city water SGPW (JIS G3442-2010) 
 
How to call pipe 
Outer diameter 
(mm) 
Thickness 
(mm) 
(A) (B) 
15  1/2 21.7 2.8 
20  3/4 27.2 2.8 
25 1 34.0 3.2 
32 1 1/4 42.7 3.5 
40 1 1/2 48.6 3.5 
50 2 60.5 3.8 
65 2 1/2 76.3 4.2 
80 3 89.1 4.2 
90 3 1/2 101.6 4.2 
100 4 114.3 4.5 
125 5 139.8 4.5 
150 6 165.2 5.0 
200 8 216.3 5.8 
250 10 267.4 6.6 
300 
350 
400 
450 
500 
12 
14 
16 
18 
20 
318.5 
355.6 
406.4 
457.2 
508.0 
6.9 
7.9 
7.9 
7.9 
7.9