The past, present and future of pvc pipe development

1. The development history of PVC profiles

PVC profile products have experienced an introduction period and a period of rapid development. After 2003, the PVC profile industry has entered a transition period. In the product introduction period: manufacturers generally pursue low cost, simplify the section of door and window profiles, and fill a large amount of calcium carbonate in the formula, resulting in low product performance and many quality problems affecting product promotion. Beginning in 1995, a group of powerful enterprises began to digest and absorb the technical essence of foreign European-style profiles, developed their own series of doors and windows, and became the leader of domestic plastic doors and windows. development and rapid growth. Many new investors did not start with product innovation and technological innovation, but simply imitated, or even cut corners, counterfeit and shoddy, and the industry market competition was in an unhealthy state. The rising market price of raw materials has intensified this unhealthy competition, making some enterprises run into difficulties and stop production or semi-stop production.

Second, the status quo of pvc pipe

Since the early 1980s, the country has vigorously promoted the application of upvc pipes, and formulated a series of policies, systems and standards, and accumulated a lot of experience. Today, it has perfect product standards, testing method standards and testing methods, construction engineering technical specifications, etc., so as to unify the specifications and quality indicators of products and realize the interchangeability of products. This shows that the development of pvc water supply pipeline has entered a mature stage, and the product quality and construction quality are guaranteed, thus ensuring the use effect of pvc water supply pipeline. The international standard for PE pipes for water supply was not officially released until 1996. my country compiled the national standard GB/T13663 with reference to ISO4427 in 1999, and it was released and implemented in 2000, but the standards and engineering technical specifications of pe pipe fittings are still being improved. This shows that the quality of domestic pe pipes is not stable, and the matching of pipes and fittings is not perfect, so it is impossible to ensure the quality in production and construction.

Third, the prospect of PVC pipes

The rapid development of PVC pipes is driven by many factors. According to the Tenth Five-Year Chemical Building Materials Development Outline, by 2005, 70% of the building drainage pipes will be plastic pipes, 50% of the rainwater drainage pipes will be plastic pipes, and 20% of the urban drainage pipes will be plastic pipes. 60% of building water supply, hot water supply and heating pipes are made of plastic pipes; 50% of urban water supply pipes (below DN400) are made of plastic pipes. At the same time, investment in major projects will strongly stimulate the demand for PVC pipes. Such as "South-to-North Water Transfer". However, at present, the distribution of processing capacity of PVC pipes is structurally unreasonable. The processing capacity of small and medium-sized enterprises is mainly concentrated in PVC drainage pipes, while a large number of non-standard pipes are still flooding the market, resulting in disorderly and chaotic market competition. Therefore, consumers must look for brand pipes when choosing PVC pipes, so as not to buy inferior pipes and cause endless troubles!