Polyethylene Pipes:
Polyethylene is a thermoplastic material, which softens with heat. In its natural state, it is translucent but while used for pipes a black or blue pigment is added to decrease the degrading effect of ultraviolet light. They are light in weight and flexible, resistant to abrasion and corrosion and have better impact resistance at low temperatures than UPVC pipes.
There are two types of polyethylene pipes are available for water supply reasons. These are
- Low density polyethylene (LDPE) pipes, and
- High density polyethylene (HDPE) pipes.
Low Density Polyethylene (LDPE) Pipes
Low density polyethylene (LDPE) pipes are built flexible and made upto 60 mm diameter coils of length 25, 50, 100, 150 and 200 m.
High Density Polyethylene (HDPE) Pipes
High density polyethylene (HDPE) pipes are harder than LDPE pipes. They are of larger diameters ranging from 300 mm to 3000 mm internal diameters. Larger diameter HDPE pipes are created through a helical winding process and are known as spiral pipes. They have higher resistant to impact than LDPE pipes. Other advantages and disadvantages are similar as LDPE pipes.