NO.

Diameter

(mm)

Length

(m)

Standard

1

10

6-12

BS4449Grade460B-1997

2

12-14

6-12

BS4449Grade460B-1997

3

16-20

6-12

BS4449Grade460B-1997

4

25-32

6-12

BS4449Grade460B-1997

5

≥36

6-12

BS4449Grade460B-1997