Sewer pipes from plastic

These pipes everywhere began to be established instead of pig-iron sewer pipes. Plastic pipes have a number of advantages. They it is many times easier on weight. The internal surface of pipes absolutely smooth, and their warranty period of service makes 50 years. However it is impossible to apply such pipes everywhere, it is necessary to modify their design, it is, certainly, minus as pig-iron sewer pipes were applied everywhere. Therefore there are various modifications of plastic pipes.
1. Pipe PVC — these pipes apply to external sewer networks. They have orange or gray color. Pluses of PVC of pipes — the high mechanical and chemical durability, and also resistance to differences of temperatures. At the same time you should not forget that high temperature can destroy a pipe. Maximum permissible temperature of working liquid about 40 degrees. Of course, if liquid has temperature of 50-60 degrees — it does not mean immediate destruction of a pipe, no, the term of its service just is considerably reduced.
Besides PVC of a pipe divide into durability classes — lungs — SN2, averages — SN4, heavy SN8.
2. pipes sewer software (polypropylene). These are pipes of gray color which can be met in the majority of the construction markets is the pipes most popular today. These pipes have much more big rigidity and heat resistance in comparison with PVC pipes. But, software of a pipe cannot be used for laying in the external sewerage.