Steel doors and windows are rapidly replacing steel windows and aluminum alloy windows due to their advantages of high wind pressure resistance, air tight watertightness, low air and rain penetration, low heat transfer coefficient, heat preservation, energy saving, sound insulation, and aging resistance.
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First, the structure of plastic doors and windows. Plastic steel doors and windows are mainly made of hard PVC (PVC) plastic profiles, plus hardware components. The profile is a porous cavity, and the main cavity has inner lining steel made of cold-rolled steel plates to increase the strength of the steel doors and windows. Profile wall thickness should be 2.5 mm or more.
Second, the manufacture of plastic doors and windows. Plastic-steel doors and windows are generally manufactured at the factory using special steel cutting and welding equipment. They are semi-automated and automated. The quality can be guaranteed.
Third, the purchase of plastic doors and windows notice.
Plastic-steel doors and windows are rapidly popularized in the field of construction engineering with their good energy-saving effect. As a "green environmental protection" product, they are increasingly favored by users. However, energy conservation does not mean environmental protection. Toxic plastic steel doors and windows not only pollute the environment, but also harm human health.
Five ways to identify toxic steel doors and windows:
First, look at the packaging logo
Look at the product name, implementation standard, factory name, site, quality grade, etc. marked on the product package or label. If the basic content is complete, whether there is ghosting or deviation in the text or pattern registration. If the content of the packaging label is incomplete, there is ghosting or deviation in the overprinting of the text or pattern. It is definitely a small-sized production company, and it is best not to buy it.
Second, look at the product color
The toxic plastic steel doors and windows are white in color, although they are white, but they give people an intuitive feeling that they are "squeaky", that is, they are dark or white in blue, and the sense of cleanness is very strong. After being used for a period of time, they are gradually grayed by sulfur and sulfur compounds in the atmosphere. black. The non-toxic plastic steel is of pure color, which resembles ivory, and its smoothness is crystal clear and soft. It has the feeling of permeating into the inside, and it will not be grayish black when polluted by sulfur and sulfur in the atmosphere.
Third, see the effect of use
Lead and salt-type plastic steel doors and windows under the long-term effect of sunlight and heat, the formation of lead dust on the surface, will lead to lead poisoning and lead pollution. After lead enters the human body, except for some that are excreted in feces and sweat, most of them precipitate in the bone marrow and melt into the blood, damaging the bone marrow hematopoietic system, the brain's nervous system and the urinary system and reproductive organs. Lead can also hinder human blood synthesis, resulting in anemia, headaches, dizziness, fatigue, drowsiness, constipation and body aches and other symptoms. The use of organic tin steel doors and windows will not appear the above symptoms.
Fourth, see quality certification
After selecting a good steel door and window, you must ask the dealer for a product quality inspection certificate. If the inspection target of the certificate or inspection report has a lead component, it proves that the product is a PVC profile.
Fifth, look at the product profile name
Poison-plastic steel doors and windows generally use low-cost lead and salt stabilizers as the main raw material. This raw material contains lead and its name is "PVC profile". Non-toxic plastic steel doors and windows use non-toxic, non-polluting, environmentally-friendly thiol organotin tin T-137 stabilizer, named "VPVC profiles."
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