pipes for cable protection
Polyethylene pipes
Polyethylene pipes are used as routes for optical cables and as a protection for telecommunications lines and electrical power leads.
Polyethylene pipes are supplied in black, with smooth outer surface and canalled inner surface, with a diameter range of Ø20 - Ø110 mm for the operating pressure of 6 bar. The listed diameter is the outer diameter of the PE pipe. The pipes are delivered as rods (6m or 12 m long) or rolled in a coil, depending on the customer’s request. The following permanent inscriptions are printed at minimum every meter of the pipe length:
- kind and type of material
- outer diameter and thickness of pipe wall, in mm
- name of manufacturer
- number of machine
- date of production (month and year)
- markings indicating the length of the pipe, placed lengthwise at every meter
The pipes are produced in accordance with the following standards: SRPS G. C6. 601, SRPS G. C6. 602, SRPS G. S3 506; SRPS G. S3. 507, and also in accordance with the Technical Conditions for small-diameter polyethylene pipes used for cable sewage ZJPTT. Pipes used to this purpose can be produced in other non-standard diameters and pressure values (apart from the standard ones, given in the table below), depending on the customer’s requirements.
Polyethylene pipes have numerous advantages over other materials, which has resulted in their increased use. They are easy to transport and install, they are easily adapted to the requirements of the soil environment and are characterised by a very low friction coefficient, owing to which the loss of pressure is minimised.
The allowed permanent thermal exposure is up to +60ºC, while the allowed temporary thermal exposure is +80ºC. The pipes are resistant to low temperatures as well.
The pipes can be joined by both dismantling connection (PE and PP joints) and a permanent connection (electrical fusion and butt welding).
