Q:What is the bonding of steel doors

Hot melt welding with special machine for steel. Plastic doors and windows are polychlorinated olefins (UPVC) resin as the main raw material, generally through the cutting, welding or screwing made of doors and windows frame fan, equipped with sealing tape, tops, hardware, etc., at the same time to enhance the profile Of the rigid, more than a certain length of the cavity within the cavity need to fill the steel lining (ribs), so made of portal windows, called the steel doors and windows. Building materials market to sell the sealant, and styrofoam, the general gap is not very big with porcelain white 793 glue can be, with a large gap on the use of styrofoam, and then sealed with porcelain white plastic, big must buy , More than 1 cm with styrofoam.

Q:Do you have a plastic door?

Sound insulation good steel and aluminum windows of the sound insulation performance of about 19 decibels, plastic windows of the sound insulation performance can reach 30 dB or more. In the increasingly noisy urban environment, the use of plastic windows can make the indoor environment more comfortable. According to the information provided by Japan, to achieve the same requirements to reduce noise, the installation of aluminum windows and traffic roads must be 50 meters away from the distance, and the installation of plastic windows can reach 18 meters. According to the OKorder Institute of Labor Protection, the use of plastic windows of indoor noise dropped to 32DB (A), the effect is very good. As a result of economic development, urban noise problems are becoming more and more serious, and plastic windows for improving people living and working sound environment quality will provide a greater contribution. Another steel window corrosion-resistant, can be used in coastal, chemical plants and other corrosive environment, the average user can also reduce the use of maintenance paint and labor costs.

Q:Will the steel doors and windows are good, or aluminum alloy is good, the living room bedroom needs a large area!

402 stainless steel is good

Q:How to get steel doors and windows installed qualification?

China's doors and windows are required to install the relevant professional contract qualification. Enterprises need to apply for relevant qualifications, and through, before undertaking the relevant projects. Door and window engineering contractor qualification is divided into one, two, three. Door and window installation qualification Application conditions: 1, the company nearly two years to undertake the following three items in more than two metal doors and windows construction, project quality qualified. (1) metal doors and windows of buildings of 6 or more buildings; (2) area of ??1000 square meters above the metal doors and windows works; (3) single contract amount of more than 1 million yuan of metal doors and windows works. Note: the new business can not provide. 2, business managers with more than 2 years of project management experience; technical person in charge with more than 5 years engaged in metal doors and windows construction technology management experience and has the relevant professional intermediate titles; financial executives with intermediate or above accounting titles. Enterprises with titles of engineering and economic management of not less than 8 people, including engineering and technical personnel of not less than 5 people; engineering and technical personnel, with more than mid-level titles of not less than 3 people. Enterprises with two construction division of not less than 3 people. 3, the registered capital of more than 100 million enterprises, corporate net assets of more than 1.2 million. 4, the enterprise nearly two years the highest annual settlement income of more than 3 million yuan. (Note: new business does not provide) 5, the enterprise has a metal doors and windows processing, production of the plant area of ??not less than 500 square meters, and a matching processing, production, installation equipment and testing equipment.

Q:Plastic steel door titanium door which is good

1, steel doors Advantages: (1) plastic steel door material with fire, no spontaneous combustion, no combustion, self-extinguishing. (2) thermal conductivity than wood, metal is much lower; insulation effect is much better than aluminum. (3) between -30 ℃ to -70 ℃, the sun, rain, dry, humid environment, no deformation, no discoloration, not brittle, but also acid and alkali drugs and waste salt erosion, , Cement, glue effect. (4) well-designed door structure with drainage, seams tight, can completely separate the rain, the sound is less than 20 UP. (5) the use of cleaning agents after cleaning as bright, the service life of up to 30 years or more. 2, plastic steel door Disadvantages: Plastic doors can only open one-way, the switch is not convenient, easy to deformation. 3, titanium door advantages: (1) high strength, good rigidity, light weight. (2) the use of temperature than aluminum alloy several hundred degrees, at moderate temperatures can still maintain the required strength. (3) titanium alloy in the humid atmosphere and sea water medium work, its corrosion resistance is much better than stainless steel; pitting, acid corrosion, stress corrosion resistance is particularly strong; alkali, chloride, chlorine organic products, Nitric acid, sulfuric acid, etc. have excellent corrosion resistance. But the titanium has a reducing oxygen and chromium salt medium corrosion resistance is poor. (4) titanium alloy at low temperature and ultra-low temperature, can still maintain its mechanical properties. 4, titanium door defects: The main limitation of titanium and titanium alloys is poor chemical reactivity at high temperatures with other materials. This property forces the titanium alloy to be different from the conventional refining, melting and casting techniques, and even often causes damage to the mold; as a result, the price of the titanium alloy becomes very expensive

Q:What is the difference between steel doors and windows and broken doors and windows

Plastic doors and windows belong to the previous generation of products, the main material used plastic materials, glass for the double glass; broken bridge window in recent years, emerging profiles, to solve the plastic doors and windows strength, stiffness is not enough, and traditional aluminum doors and windows insulation effect is poor The problem is the master of the two. At present, steel doors and windows are gradually out of the stage of history, only in low - cost housing, rural areas, the only advantage is cheap, and with the passage of time prone to fade, deformation. Many of the old district are also gradually replaced in the new broken bridge aluminum doors and windows.

Q:Will the new processing plant, associated with the installation, is not the business tax and value-added tax have to pay, is the value-added tax, then the tax burden to achieve how much? Small-scale good, or the general taxpayer good

1, processing with the installation, the main business should be processing tax provisions in full payment of value-added tax 2, for what type of business depends on your business customers, if your customer base for the general satisfied that you apply for the general taxpayers more appropriate, because the input tax can be deducted from the output tax can pay less tax, on the contrary small size Because the small taxpayer tax rate is low, the processing industry is 6%, the general taxpayer tax rate is 17%.

Q:Plastic doors and windows will not produce formaldehyde

Should not, the landlord too worried, huh, huh, new house, then often open the window ventilation is the best, more window ventilation it, hoping to help you!

Q:What is the difference between a single glass and a double glass?

"Single" and "double" refers to the number of layers. "Glass" refers to the glass. The glass on the door is single or double. Plastic windows can also be loaded with thin or double wave

Q:Sanmen doors and windows OKorder broken bridge aluminum doors and windows brand

Plastic window is generally about 300 yuan per square, broken bridge aluminum standard in the 800 to 900 or so per square, depending on whether the window is complicated, whether the high demand for hardware, and the other about 200 yuan it ... ...