In recent years, newly-listed environmentally-friendly building materials generally have the following characteristics: First, they meet the functional requirements of buildings for building materials, taking into account the aesthetic requirements of buildings. Second, it has a natural affinity for the natural environment and is consistent with the principle of sustainable development. It does not have pollution or destructiveness. In the course of use, resources are saved, and no harmful substances harmful to the environment are generated (or rarely generated) in the production process, and the load on the human living environment is reduced, and the recycling of non-renewable resources is realized. The third is to build a convenient, healthy and comfortable environment for humans.
Environmentally-friendly building materials have excellent performance The new type of environmentally-friendly building board generally has the advantages of light weight, high strength, heat preservation, energy saving, and no pollution. The use of new building materials will not only greatly improve the function of houses, but also make the interior and exterior of buildings more modern and satisfy people's aesthetic requirements. Some new building materials can significantly reduce the weight of buildings, create conditions for the promotion of lightweight building structures, promote the modernization of building construction technology, and greatly speed up the construction speed.
According to statistics from the Tianyuan Mining Institute of Building Materials in 2010, as of the end of November 2010, the market share of new environmentally friendly building materials certified by the National Green Materials had reached 46.5%, a 65% increase from the previous period. According to the forecast of the Ministry of Housing and Urban-Rural Development, by the end of 2014, the market share of new environmentally-friendly building materials in China will reach 94%.
The use of three kinds of plates such as “paper gypsum board, glass fiber reinforced cement (GRC) board, and non-asbestos calcium silicate board†was spawned as an example. The main raw materials of gypsum plasterboard are gypsum and facing paper, which are suitable for interior wall panels and ceiling tiles. The main raw materials of glass fiber reinforced cement board are low-alkali cement and alkali-resistant glass fiber, which are suitable for interior and exterior wallboards; calcium silicate board The main raw material is silica-calcium material, which can be used for interior decoration and interior wall panels, and can also be used for decoration and furniture combined with houses. The common characteristics of these three kinds of plates are: using them as original plates, and then equipped with anti-seepage, thermal insulation, fire prevention and other functional materials, using composite technology, can produce a variety of lightweight and superior performance of new wall materials. In addition, the raw materials they use are non-metallic materials and are the three most readily available non-metallic materials.
With the development of urbanization in China and the booming of the real estate industry, China’s new environmentally-friendly building materials market will inevitably accompany a larger market expansion. Building materials companies should seize this opportunity to break out of the market and closely follow the world’s green environmental protection concept. Recycling and recycling are the breakthroughs, taking the energy-saving route and gaining opportunities in the future market competition.
Fasteners, also known as standard parts in the market, is two or more parts (or components) of the fastening connection as a whole used by a class of mechanical parts. It is characterized by a wide variety of specifications, different performance uses, and standardization, serialization, universality of the degree is extremely high. The fastener is the most widely used mechanical foundation piece, the demand is very big.
It usually includes the following 12 parts bolt from the head and screw with external thread cylinder two parts of a class of fasteners with Nuts to tighten the connection of two parts with through holes. This form of connection is called bolted connection. If the NUT is unscrewed from the bolt, the two parts can be separated so that the bolt connection is a removable connection. A type of fastener having no head and only two ends that are externally threaded. One end must be screwed into a part with an internal threaded hole, and the other end must be threaded through the part with a through hole, and the nut must be screwed on even though the two parts are firmly connected as a unit. This type of connection is also known as a stud connection and is a detachable connection. The utility model is mainly used for the occasion where the thickness of one of the connected parts is relatively large, the compact structure is required, or the bolt connection is not suitable because of frequent disassembly. Screw is also composed of the head and screw two parts of a class of fasteners according to use can be divided into three categories of Machine Screws, set Screws and special purpose screws. Machine screws are mainly used for the fastening connection between a part with a fastening thread hole and a part with a through hole. The fastening connection does not need a nut to match. This type of connection is called a screw connection and is also a removable connection. The fastening screw is mainly used for fixing the relative position between two parts. Special purpose screws such as ring screws are used for lifting parts. Nuts with internal thread holes are generally flat hexagonal or flat square or flat cylindrical fit Bolts , studs or machine screws used to fasten two parts together as a unit. Special class of nuts high strength self-locking nuts is a classification of self-locking nuts with a strong side of high reliability. Mainly is the introduction of European technology as a prerequisite for road construction machinery, mining machinery, vibration machinery equipment and other domestic production of such products manufacturers are few. NYLON SELF-LOCKING NUT is a new type of high vibration-resistant and anti-loose fastening parts, which can be used in various mechanical and electrical products with temperature-50100 °C. Aerospace, aviation, tanks, mining machinery, automotive transport machinery, agricultural machinery, textile machinery, electrical products and various types of machinery demand for nylon self-locking nuts increased because its anti-vibration and anti-loosening performance is much higher than other anti-loosening devices and vibration life is several times or even dozens of times higher. At present, more than 80% of mechanical equipment accidents are caused by the loosening of fasteners, especially in mining machinery. And the use of Nylon self-locking nuts can eliminate the fastener looseness caused by a major accident. 5. The tapping screw is similar to the machine screw but the thread on the screw is a special tapping screw thread. For fastening and connecting two thin metal members into a whole, small holes need to be made on the members in advance because the screws have high hardness and can be directly screwed into the holes of the members to form a responsive internal thread. The connection form also belongs to the detachable connection. 6. Wood Screws are similar to machine screws but the thread on the screw is a special wood screw thread that can be screwed directly into the wood member or part for fastening a metal or non-metal part with a through hole to a wood member. The connection is also a detachable connection. Kill. A type of fastener having a ring-shaped washer. The supporting surface placed between the bolt, screw or nut and the surface of the connecting part increases the contact surface area of the connected part, reduces the pressure per unit area and protects the surface of the connected part from being damaged. 8. The Retaining Ring is provided in a shaft groove or hole groove of a machine or device to prevent the parts on the shaft or hole from moving from side to side. 9. The PIN is mainly used for parts positioning and some can also be used for parts connecting, fixing parts, transferring power or locking other fasteners. 10. A class of fasteners consisting of a head and a nail rod for fastening and connecting two parts or components with through holes so as to make them a whole. This form of connection is called Rivet Connection, or riveting for short. Non-detachable connection. The rivets on the part must be broken to separate the two parts which are joined together. Kill. Assembly and connecting pair assembly means a kind of fastener which is supplied by combination, such as machine screw or bolt, self-supply screw and flat washer or Spring Washer, lock washer. It means a kind of fastener which is supplied by combination of special bolt, nut and Washer, such as steel structure, with high strength big hexagon head bolt. 12. A dissimilar fastener consisting of light energy and the head of a nail or head of a nail that is fixed to a part or member by welding so that it can be connected to other parts. 13. Steel thread bushing steel thread bushing is a new type of thread connecting element, which is made of high strength and high precision corrosion resistant diamond wire. When the spring is installed on the inner surface of the special screw hole of the Matrix to form the standard screw thread and the screw bolt, the strength and wear resistance of the screw thread can be improved obviously, especially on the low strength materials such as aluminum, magnesium, cast iron and plastic. The locking type is to add one or more locking rings to the ordinary type. Xinxiang Yongda Industrial Co. , Ltd. is specialized in the production of Steel Screw sets manufacturers recommended steel screw sets embedded in aluminum, magnesium alloy, cast iron, fiberglass, plastic and other low, the Standard M and MJ threads can be formed in the threads of the engineering materials with the functions of continuous strength, impact resistance and wear resistance, and can disperse the stress to protect the matrix threads and greatly extend the service life of the Matrix. At the same time, the stress of the thread is improved and the elastic connection is formed to eliminate the pitch and half-angle error between the internal and external threads, so that the load on the thread is evenly distributed and the matrix thread is not damaged and its service life is prolonged
Stainless Steel Screws,Self Tapping Metal Screws,Stainless Steel Bolts,Flange Bolt
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