Perporared Pipes

National Sharq Factory for Plastic Products have arranged of perporated UPVC Pipes for use in sub-soil drainage systems. The figures 3a & 3b below give general confiuration which may be varied within the following parameters depending on size and class of pipe selected.

Parameters, Limits of Variation, Outside Diameter 110 mm to 400 mm in standard sizes. Wall Thickness       T   in accordance with the class of pipe selected longitudinal
Pitch of Holes  P  30 mm to 200 mm depending on size and class of pipe

Hole Diameter      D 3 mm to 13 mm depending on size and class of pipe.
Number of Rows   N1to4
Angular Pitch of Holes A 40 degree for 3 or 4 rows 40, 80, or 120 degrees for 2 rows.

For example a typical 4 rows of 6 mm diameter holes at longitudinal pitch of 70 mm will give an intake area in excess of 1000 sq. per meterlength of pipe. For further details concerning drilling configuration, please refer to National Sharq Factory for Plastic Product data sheet obtainable from our technical department.