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Hose material classification
Hebei Siberia Special Rubber Co.,Ltd | Updated: Dec 11, 2015

PVC hose (health level plastic hose, plastic hose, plastic corrugated tube, food level hose, health level hose, imports hose) had widely application Yu to pipes road system and gas conveying pipeline system, but years PVC pipeline system in gas conveying field of market share almost for zero, water system of dosage also has slightly of fell. but, PVC hose in no pressure pipeline system as drainage, and sewage and row waste system in of dosage get has smooth growth, Mainly because of the production of PVC raw materials dependence on crude oil as other thermoplastics, the production costs are relatively low.

Hoses (plastic bellows, inlet hose) can be either wall or wall structure design, connect it using solvent bonding mode. Depending on whether or not to use plasticizers, can be divided into rigid PVC (resistance to corrosion and high temperature resistance, while costs are relatively high.

Although PE piping systems do not have the cost advantage (relatively high raw material prices), but it received rapid promotion and popularization. This is mainly thanks to PE hose quick easy and secure connection, hot-melting connection. Teflon hose due to the PE hose (sanitary plastic hose, plastic hoses, polyethylene hose, food grade hoses, sanitary hoses, inlet hose), the melting temperature range and the viscosity of the melt characteristics of PE hose has excellent welding, so that PE hot melt strength of the joints meet or exceed the strength of tube body. PE electrofusion fittings can make PE pipeline systems repair work easy, thus increasing the pipeline's safety and reliability.

PP hose (sanitary plastic hose, plastic tubes, polypropylene hose, food grade hoses, sanitary hoses, inlet hose) in the 1970 of the 20th century, began to be used in the manufacture of pipe. According to the different polymer structures, PP material can be divided into PP-H (HOPP), silicone hose PP-B (block copolymer polypropylene) and PP-R (random copolymer polypropylene) in three categories.

Pp-r pipe system is an important member of the hot and cold water piping systems for buildings. Domestic had once appeared promotion PP-R plastic pipeline system of boom, but is regrets, due to fake products and not qualified products of interference, PP-R tube of market and no get is good of continued sex development, instead is to market left has "plastic pipeline not durable" of bad impression, that many to pipes road system of building designer and developers and with party are on plastic pipeline lost has confidence. From a technical perspective, failure occurs because there is a wide range of the nonconforming product. While is no using qualified of raw materials, in plastic pipeline development early, practitioners for raw materials of long-term performance and strength of awareness enough thorough, for raw materials of evaluation method of understanding also enough deep; on the is system of connection out has problem, because PP-R tube of die volume in plastic hose inside is compared big of, so joint at easy produced extra of stress, especially steel plastic transition of joint in hot and cold water cycle role a time Hou, on will frequently appeared leakage of situation.


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