The problems and countermeasures of steel doors and windows

China's plastic steel doors and windows currently have a small scale of production, poor efficiency; heavy equipment, light technology; fewer varieties, poor quality; polarization, one by one, and so on. Expert analysis: It is necessary to increase macro-control efforts and technical inputs, control total development and import, in order to improve product quality.
China Plastics Processing Industry Association special profile and door and window products professional committee analysis, China's steel doors and windows currently have the following problems:
- Small scale and poor efficiency. The small scale is not only reflected in the small number of production lines, but also accounts for 80% of the production lines with less than 4 production lines. The main reason is that the proportion of machine models is seriously out of balance. This situation also exists in many companies with large production lines. In the mold matching is usually equipped with one or two sets of molds, a single product; it is difficult to meet the market needs, but also can not play equipment capabilities. After several years of wind and rain, these manufacturers suffered from poor operating results, the investment was difficult to recover, and some had converted to production, some had sold equipment, and more were forced to stop production and idle equipment.
- Heavy equipment, light technology. People are very optimistic about the prospects of steel doors and windows, but the technical difficulty of PVC profiles is not enough. Many manufacturers believe that as long as the introduction of advanced production equipment, they will be able to produce first-class products. From a variety of industries to some manufacturers of plastics processing industry, lack of plastic processing technology and professional personnel. Peering into the wall with peers and hiring with high salaries are the best shortcuts. This in turn makes some companies afraid to rush to invest in talents, resulting in a vicious circle of irregular movement of industry employees and low levels of industry technology.
- Small variety and poor quality. Most manufacturers on the profile project lack of new ideas. No matter whether it is equipment or products, they can only imitate each other due to lack of technical force; resulting in fewer types of products; not high grades, lack of competitiveness. In the face of the development of the plastic steel doors and windows market is still not perfect, the domestic building doors and windows market is still the situation of wood, aluminum, plastic three points of the world, mainly by price competition. The doors and windows that lead to low prices are flooding the market.
- Divided into two poles, one by one. Since 1998, the development of steel doors and windows has experienced severe polarization. At one extreme, there has been an overwhelming number of projects that compete with each other in some areas. You are 10,000 tons, and I'm 50,000 tons; a family is bigger than a family and it doesn't consider market capacity and layout. If this phenomenon is not contained, within two years, the situation of overproduction and oversupply will cause many companies to fall into a new predicament. At the other extreme, many self-employed households have emerged in the hot-spot applications of plastic steel doors; they are all over the streets and are not supervised and managed; they temporarily rent a facade, neither a workshop nor special equipment. Buying a few cheaper profiles, like processing aluminum alloy doors and windows—such as cutting corners, shoddy work, and the sale of plastic steel doors and windows to the streets and lanes, will be a tragedy for the industry.
In view of the above situation, the following countermeasures should be taken to develop the steel doors and windows industry:
1. We will increase macroeconomic control and coordinate the division of labor management. According to the nature, scope, and application of PVC profiles and steel-plastic doors and windows, it is recommended that the National Chemical Building Materials Coordination Group shall be in charge of industrial management by the State Light Industry Bureau and the Ministry of Construction in accordance with the principle of coordinated division of labor. The State Administration of Light Industry has focused on the management of total volume control, fixed-point layout, project consulting, technical progress, and quality control of PVC profiles. The Ministry of Construction focused on managing the promotion and application of plastic steel doors and windows, production licenses and market access.
2. Determine the scale of project construction and control the total amount of development. The construction of plastic steel doors and windows project usually has the following three ways, door and window assembly plant, professional profile plant, profile production and door and window assembly hybrid factory. The size of the door and window assembly plant can be large or small, but it is appropriate to have a small size. Profiles specializing in the production of plants, the scale is appropriate, but should not be too large.
According to the objectives and existing equipment capabilities proposed in the "Outline", taking profiles as an example, theoretical calculations should not seem to increase. The national development of the national standard by the year 2000 requires the use of steel doors and windows 30 million square meters, about 300,000 tons of profiles. If a factory is built on the 10,000-ton scale, 30 will be built, and an average of one in each province and city will suffice. And now there is already 400,000 tons of production capacity. Although it is very decentralized, the situation can be imagined if it is fully capable. However, taking into account the continuing aging and elimination of equipment and the various factors that cannot be performed, equipment should be increased with a modest scale and growth ratio, instead of the current one. 3. Control imports to prevent duplicate construction. According to the development status and level of China's plastics machinery industry, profile production lines and door and window assembly equipment can meet the needs of the industry. Compared with foreign countries, profile production lines have a certain gap, but they mainly have speed gaps, but they have price advantages. Regardless of whether it is an extruder or a profile mold, the price ratio between imports and domestic production is not lower than 4 to 1, and the production efficiency has not reached the level of 4 to 1. The quality of assembly equipment is basically comparable to that of similar foreign equipment, and it is extremely advantageous in terms of price.
4 Increase investment in technology and improve product quality. The production of PVC profiles has a certain depth of technology compared with the assembly of plastic steel doors and windows. The assembly of doors and windows can be put into operation after a short period of training. The production technology of the profiles is not an easy move. While promoting the development of the industry, the state needs to strengthen the education and training of professional skills in addition to the necessary key technologies. When evaluating a project, you should not only look at the capabilities of the equipment, and you should strengthen the assessment and acceptance of technical work. The technical focus of the steel doors and windows is not assembly production. From the experience and lessons, most problems are in the installation. Compared with foreign countries, the installation of plastic steel doors and windows behind the technology is the weak link in the promotion.

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