Analysis of the problems existing in the development of China's PVC pipe industry

The country's PVC pipe has developed rapidly in recent years, with an annual increase rate of 8%, and an annual increase rate of 2%. In plastic pipes, PVC pipe usage has always been far ahead, and it is widely used in water supply and drainage pipes.

There is still room for improvement in product innovation. Because the skills are relatively sophisticated, PVC water supply pipes have not invested much in product innovation in recent years. There are relatively few new products. There are many general products on the market, and there are few high-skilled and high-value-added products. General-purpose products, low-grade products, and low-grade products.

The effect of banned lead on PVC-U pipelines - presumably, the rules for the use of non-lead salt heat stabilizers in PVC-U drinking water pipes have a negative impact on the PVC pipeline industry. Although the relevant departments, industry associations and some production companies have made a lot of efforts to convene a press conference and use the media to promote the situation, the overall situation is gradually rationalized, but because some users still do not know the real situation, PVC-U The increase rate of drinking water pipe usage is less than the uniform increase level, and there are potential negative effects on the use of other PVC-U pipes.

Expanding the application scope and market implementation work needs to be improved, and the application and supporting skills need to be further improved. The industry and product promotion, science popularization and other aspects are still not in place, which affects the rational use of plastic pipes and the expansion of application scope. The relevant work of the trade associations has yet to be improved, and the promotion of publicity needs to be strengthened. At present, the market for the application of products will be concentrated in a limited number of areas, and there is also the opportunity to open up new markets for application. Some of the supporting skills for product use are not complete, and some standardization operations such as design, construction, and inspection are relatively lagging.

The market is not standard, and some companies have low quality products, which affects the healthy development of the industry. Because the plastic pipe market is not standard, some buyers are not the end users of the products, do not pay attention to the brand and quality, and form different quality in the market. The products exist together, and even some local products with low price difference are very good for sale, and the PVC-U tube is still quite serious. It is known that there are more than 500 PVC-U production companies in a county-level area, and most of them are family workshops. The quality status can be imagined. In the cost of PVC-U pipelines, the price of materials is about 70%. A single company reduces the cost of the product by reducing the wall thickness and increasing the amount of calcium carbonate to form a product with low quality. Other companies choose two or more different quality trademarks, use low-grade processing equipment, and use drinking water pipes to produce lead salt stabilizers to reduce costs, damage consumers' rights and damage the industry's promise.

The construction quality of the project should be further improved. The quality of the PVC-U pipeline project depends to a large extent on the construction level. Good products and friendly construction capabilities ensure the outstanding operation of the pipeline system engineering. In some projects, the technical personnel are short of professional training. In the actual operation, the design and construction of the metal pipe are carried out. There are non-standard construction, rough construction, etc., and the skill and economic functions of the PVC-U pipeline are not fully utilized, and even the pipeline is formed. damage. Some users still don't know how to construct and supervise plastic pipes according to the regulations.