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MMP Pipes (A-4) MMP UPVC Pipes According to BS 3505/3506
Nominal Size Inch.
Outside Diameter mm
Wall Thickness (mm)
Class 'B'
Class 'C'
Class 'D'
Class 'E'
Class 'O'
Class '6'
Class '7'
Min
Max
3/8
17.0
17.3
1.5
1.9
2.3
2.8
3.2
3.8
1/2
21.2
21.5
1.7
2.1
3.3
3.7
4.3
3/4
26.6
26.9
2.5
2.9
3.4
3.9
4.5
1
33.4
33.7
2.2
2.7
4.0
5.2
1 1/4
42.1
42.4
3.6
4.2
4.8
5.5
1 1/2
48.1
48.4
3.0
3.1
1.8
5.1
5.9
2
60.2
60.5
6.3
2 1/2
75.0
75.3
3.5
3
88.7
89.1
4.1
4.6
5.3
5.7
6.6
4
114.1
114.5
6.0
6.9
7.3
8.4
5
140.0
140.4
4.4
6.4
9.0
10.4
2.6
6
168.0
168.5
7.6
8.8
10.2
10.8
12.5
