In recent times throughout the world, the world, the significance of plastics pipes in the design about piping systems for public not to mention industrial water supply not to mention sewage transport has gradually increased. This trend reflects a growing confidence in PE Socket Fusion as a piping material, perhaps due mainly to greater worldwide knowledge and experience in this field.The plastics are mostly manufactured on a petrochemical basis with petroleum as the raw material.

In this context it could be connected with interest to know how the world consumption related with petroleum looks. Only 4% of the world production for oil used for manufacturing plastics while 96% is burned as fuel in the fields relating to transportation, heating, etc.The use of plastics is expanding rapidly, and additionally especially in the case related with plastics pipes. This is especially true for pipes designed for water pipes sewers outdoors coupled with indoors. All industrial nations show the same tendency. Such as, it can be mentioned that PP-R pipe system production in Europe rose from about 1.4 million tonnes in 1985 to 2.6 million tonnes in 1997. The corresponding figures for USA were 1.8 million tonnes in 1986 plus 2.4 million tones in1997. Plastics pipe market EuropeThe Further annual growth in Europe for pipes is estimated at 7% for PE, 10% for PP and also 2% for PVC.The favorable price trend has also contributed to the fact that today plastics pipes are competitive with conventional pipes within the total civil engineering infrastructure branch.Against the background related with such developments, it appears suitable to spread further knowledge of plastics pipes coupled with hoe they ought to be used in a proper way for water supply together with sewage disposal.

Thereby, the previous survey of the problems, in particular in the field of outdoor pipe applications , is hereby updated.Cross linked polyethylene can be based upon high quality hdpe pipe as well as (M D P E). In the cross linking process the molecules are linked together by powerful chemical bonds plus chemical together with physical cross linking ways are both available. The chemical approaches implies use for cross linking agents such as peroxide, (A Z O) compounds, while physical cross linking is archived by electron radiation.