4033 and various size hdpe duct for telecom communication.
2000m blowing one time for optical cable fibre laying.

Using HDPE conduit offers the following advantages:

Long-term strength for extended life and performance Strength to withstand external loads Lightweight and flexible, allowing for various installation methods Low coefficient of friction, allowing longer and faster cable installations Mechanical protection for cables Resistance to corrosive chemicals and aggressive soils Moisture proof and watertight Extended outdoor storage life Protection against rodents Available in long lengths requiring fewer joints, lowering installation costs Sequential footage markings Color coded for easy identification Pre-installed cable provides one step placement of cable and conduit Wide range of splicing choices, from heat to mechanical couplers

Temperatures & PressuresHDPE conduits design operating temperature range is from -100 F to 140F.

Cold ambient temperature does not have an adverse effect on conduit strength or characteristics. Installation & JoiningInstallation of HDPE conduit is similar to that of standard cable systems conduit can be trench-laid, plowed or directionally bored.

Although benign to chemically aggressive native soil, installation of HDPE conduit in soils contaminated with organic solvents (oil, gasoline) is not recommended. MaintenanceProperly designed and installed, HDPE conduit systems require little on-going maintenance. HDPE is resistant to most ordinary chemicals and because it is non-conducting it is not susceptible to galvanic corrosion nor will it contribute to electrical interference.

HDPE pipe is immune to attack by, and provides no host nutrients for, bacterial or fungal growth. It is impervious to insect attack and is designed to protect cable from rodent attack and accidental dig-up.