How to choose the pipe?. Now there are a lot of materyalov and technologies in the production trub.Tak what do you choose the pipe for our needs. Advantages and disadvantages of polyethylene and polypropylene pipes of the following Polyvinyl chloride materials (PVC pipe), PVC pipes have high rigidity, which allows their use for production risers of large diameter sewers. PVC pipe can be used up to 45C, and from Chlorinated PVC – up to 95S. Pipes are not combustible and have a lower coefficient of linear thermal expansion compared to pipes made of PE and PP polypropylene (PPR – PPR pipes), such pipes should be avoided for drinking vody.Luchshim application is cleared sewage and sewage levnevaya Polyethylene Pipes: Polyethylene (PE), high durability (warranty period – 50 years). The absence of all types of corrosion.
Low microbial fouling. Non-toxic – no impact on taste and odor of water. Hydrodynamic capacity polyethylene pipe does not deteriorate with time (almost no mechanical tube overgrowth due to low surface roughness). High reliability under mechanical loads due to such properties of PE, such as viscosity and elasticity at the same time. Good insulation properties. Polyethylene pipes are in 2 – 4 times lighter than steel, which facilitates transportation and assembly.
Available in lengths up to 13 m long bays and up to 400 m. The butt welding of polyethylene pipes is fully automated, inexpensive, simple and requires no additional consumables. These pipes are not outwardly beautiful so is used mainly for outdoor gazovodoprovodov with the closed method prokladki.Pri that they can simply be buried in the ground and "forget". Cross-linked polyethylene (PEX), PEX pipes are characterized by the following properties: fatigue resistance even at elevated temperatures (up to 110 C), dimensional stability (no load application material does not deformed up to 200 C) fracture toughness, impact resistance and toughness in the notch even at temperatures below -50 C; high wear resistance to abrasion and incision; good shrink properties.