Plastic rigid pipes, flexible hoses and components

Base manufacturing material is polypropylene homopolymer (PPH). It is a thermoplastic high molecular substance, partially crystalline with a density distinctly lower than in other used plastics, ranging from 0.90-0.91g/cm3. Surface is not dissolvable and also does not swell, and therefore gluing is very difficult. On the other hand is very easy to weld. PPH has good durability against aging and therefore the system elements take pride in a long lasting life. It is characterized by an excellent chemical resistance to acids (except for oxidant acids), alkalis and weak solvents. It has a high resistance to climatic effects and microorganisms, it is physiologically unobjectionable however, is not resistant to UV radiation. In comparison with other common plastics it has very good surface hardness and sufficient elasticity at low temperatures. PPH is also characterized by good impact resistance, good electro-insulation properties with practically zero absorption of condensate and high heat transference short-term up to 140°C). It also has very low heat conductivity (only 0.22W/mK), and therefore does not result in a major decrease of temperature of combustion gases in piping, as occurs with e.g. stainless steel. PPH ranks among thermoplastic, and therefore when heated and cooled, it retains its excellent properties.



Blade o-rings, circular o-rings and other sealing system elements are made from ethylene-propylene-diene -rubber-M class (EPDM), and are placed in all pipes and blocks during manufacture. It is a very high quality elastomer with long- lasting resistance against the effects of condensate, high temperatures (short-term up to 150°C), with resistance against aging, oxidation, ozone and atmospheric effects. This acid-resistant rubber has also very good resistance to chemicals as inorganic matter (including carbon dioxide), and organic polar compounds. However, EPDM has very poor resistance to crude oil matter.


Outer sheath and anchoring elements

The outer sheath and the anchoring elements of the LIB, LAB and LAM are made of highly polished stainless steel alloy material no. 1.4301 (designation according to standard EN ISO X5CrNi 18-10). Chrome-nickel steel is very easy to weld and polish, it has a high elasticity, is resistant to abrasion, can be easily recycled and and long-term resistant to temperatures up to 300°C. The steel is resistant to water, steam, air humidity, weak organic and inorganic acids.

The LAC system is made from the same materials as the LIB, LAB and LAM systems, but it is galvanized with a sufficient layer of copper, which guarantees the same aesthetic surface as pure copper.

In the case of the LIL and LAL systems, the outer sheath and the anchoring elements are made of steel no. 1.4509 (designation according to standard EN ISO X3CrTi17). This steel is suitable for molding in cold condition and the surface can be painted, metallized or enameled. Thanks to these characteristics, the surface of all components of the LIL and LAL systems can be powder-coated very easily. Due to the corrosion resistance of the material, the powder coating serves purely aesthetic purposes.