Perforated Coil
Drainage Pipe



General Specification

SIZE (mm)
OD (mm)
LENGTH (m)
50 dia.
50
100
80 dia.
75
100
100 dia.
100
100
125 dia.
125
50


1. Summary - This specification covers the supply and installation of HDPE perforated drainage coil pipes for sub soil drain projects.

2. Material - Pipe and fittings shall meet the material ASTM D 3350 or may be post-industrial polyethylene.

3. Manufacturing Method

  3.1. Pipes shall be produced utilizing Vacuum Extrusion system to ensure uniformity.
3.2. Extrusions shall be asymmetrically wound to form a uniform round cross section of pipe.
3.3. Inner and outer wall shall be smooth but corrugated to secure space for drain water.
3.4. Perforation shall be done automatically by machine for clean & uniform holes and equidistant from each other.
3.5. Pipe wall shall have strong structure to resist external load.

4. Pipe Dimensions

Size
OD (mm)
No. of perforation (ea/m)
Area of perforation (sq. cm/m)
Length of roll (m)
2"
50
90
10
100
3"
75
120
14
100
4"
100
167
20
100

5. Couplers
5.1. Couplers shall be HDPE nut type with a width equal to the diameter of the pipe.