The heat-resistant plastic tube is made of high-grade plastic material, suitable for high temperature (7C- 110 o C) environment, and the pressure is 10 - 25 atm. It is mainly divided into three materials: HDPE, PPR and PVC. These three materials have their own characteristics and are used in different fields of pipeline construction in Nigeria.
HDPE heat resistant plastic pipe is the most popular heat resistant plastic pipe in Nigeria
HDPE (High Density Polyethylene), also known as PEHD (High Density Polyethylene), is a highly crystalline, non-polar thermoplastic resin. The appearance of the original HDPE is milky white, and the thin section is translucent to a certain extent. It has good heat resistance and cold resistance, good chemical stability, high rigidity and toughness, and good mechanical strength. Dielectric properties, environmental stress cracking resistance is also good. The melting temperature is 220~260°C. For materials with larger molecules, the recommended melting temperature range is between 200 and 250 °C. High-density polyethylene is a white powder granular product, non-toxic, tasteless, density in the range of 0.940-0.976 g/cm3; crystallinity of 80%-90%, softening point of 125-135°C, and service temperature up to 100 ℃; hardness, tensile strength and creep are better than low-density polyethylene; wear resistance, electrical insulation, toughness and cold resistance are better, but slightly worse than low-density insulation; chemical stability is good, At room temperature, it is insoluble in any organic solvent, resistant to acid, alkali and various salts; the film has low permeability to water vapor and air, and low water absorption; poor aging resistance, environmental cracking resistance is not as good as low-density polyethylene Ethylene, especially thermal oxidation will reduce its performance, so the resin needs to be added with antioxidants and ultraviolet absorbers to improve this deficiency.
It is precisely because of the high temperature resistance of HDPE plastic pipes that it has played an irreplaceable role in Nigerian construction.
PVC pipes include two types: rigid PVC pipes, also known as uPVC pipes (hard heat-resistant plastic pipes) and soft PVC pipes. Rigid PVC pipes do not use plasticizers in the mixing formula, and the mixing ingredients of uPVC pipes include PVC powder with a K index of 65-66, heat stabilizers, internal lubricants, external lubricants, processing aids, fillers, and pigments. ..the composition contains the polymer acrylic which contributes to durability and has very good impact resistance. The colorant set is heat-stable and thus helps uPVC pipe not burn during processing while resisting the effects of heat and UV light during use. Nigeria is located near the equator and is exposed to high-temperature ultraviolet radiation all year round. It also has very high requirements for pipelines. uPVC just meets these requirements very well. It is widely used in doors, windows and drainage pipes of outdoor buildings.
PPR heat-resistant plastic pipe is a water pipe made of high molecular weight polypropylene random copolymer. PPR pipes are used as pipes for domestic water transportation. At present, the tap water pipes in Nigeria use plastic pipes instead of metal pipes, which are easy to install, rust-free, and have a long service life.
The main features are as follows:
1. As the most ideal hot water supply pipe in modern times, the ppr pipe has good heat resistance. It is no problem that the long-term use temperature can reach 75°C, and the instantaneous use temperature can reach 95°C. The insulation effect of ppr pipe It is also good. the
2. The inside of the ppr pipe is smooth, and no other particles can be touched. This advantage makes the pipe resistance small and energy consumption lower. The ppr pipes and fittings of the same type and material are connected to form a perfect whole, which avoids the problem of water pipe leakage. the
3. The ppr pipe has corrosion resistance, which solves the problem of rusting of traditional metal pipes. The non-polar material of the ppr pipe avoids reacting with other chemical elements in the water. The ppr pipe will not scale when used. the
4. The ppr pipe is light in weight, because of this advantage, the difficulty of construction is greatly reduced. As a green and environmentally friendly material, it will not pollute the external environment during production or construction.
No matter what kind of heat-resistant plastic pipe is made of, it has its suitable application occasions. If we consider the economic cost and cost performance, we recommend Nigerian customers first to use PPR heat-resistant pipes. Considering the comprehensive cost-effectiveness, we recommend HDPE heat-resistant plastic pipes. Of course, UPVC Heat pipes also have their irreplaceability in some fields.