When people buy locks, they are generally worried that the locks are not durable or that the surface will rust or oxidize in a short time. This issue is related to the use of materials and surface treatment issues. First, the material When people buy locks, they are generally worried that the locks are not durable or that the surface will rust or oxidize in a short time. This issue is related to the use of materials and surface treatment issues. From a durable point of view, the best material should be stainless steel, especially as a surface material, the more light it is. Its strength, corrosion resistance, color unchanged. However, there are many types of stainless steel, which can be mainly divided into ferrite and austenite. Ferritic stainless steel is magnetic, commonly known as stainless iron, a long time, the environment is not good will rust, only austenitic stainless steel will not rust, the identification method is very simple, with a magnet to test can be identified. Copper is one of the most widely used lock materials. Its mechanical properties are good, corrosion resistance and processing performance are good, and bright color, especially copper forged handles and other lock decorative parts, the surface is flat, high density, no pores, Blisters. Both strong and rust-proof, can be used to plate 24K gold or gold and other surface treatment, it looks magnificent, noble and generous, to add a lot of color to people's homes. Zinc alloy materials have much poorer strength and rust resistance, but they have the advantage of being easy to make into complicated patterns, especially pressure casting. The more complex pattern locks seen on the market are likely to be made of zinc alloys, and consumers should carefully identify them. Iron and steel, better strength, lower cost, but easy to rust, generally used as internal structural materials for locks, not suitable for external trim. Aluminum or aluminum alloys, common aluminum alloys (except for aerospace) are soft and lightweight, and have a lower material strength, but are easier to shape and shape. Second, the surface treatment Surface treatment refers to the use of metal electrodeposition (commonly known as electroplating), coating (called spraying), chemical oxidation (coloring) or other processing methods to cover or form a protective film on the surface of a part. The film mainly plays an anti-corrosion effect, and also increases the appearance and the durability of the product. It is an important factor directly measuring the quality of the product. Common methods for measuring the surface treatment include: thickness measurement of the cover layer, binding force inspection, salt spray and humidity test, appearance inspection, and the like. The coating is applied to the film adhesion, hardness, moisture test and visual inspection. China's new standards for door locks The new standards for door locks in China were released in June 2000 and implemented in October 2000. There are four national standards for door lock products. (Including GB8385-97 "Outdoor Door Locks"; GB8386-87 "Plastic Insert Core Lock"; GB8387-"Leaf Insert Center Lock" and GB8388-87 "Spherical Door Lock" were converted to QB/ in March 1999 respectively. T3837-1999, QB/T3838-1999, QB/T3839-1999 and QB/T3840-1999) were released and implemented in 1988. However, with the continuous development of the market economy, door lock products have undergone great changes. The product variety is continuously enriched and the quality level is continuously improved. The original national standards and professional standards are far from meeting the requirements of the door lock quality technology in the new situation. In particular, China’s accession to the WTO is imminent, and economic global integration is imperative. The grade and quality of door lock products in China must be improved. In order to be in line with international standards, in order to narrow the gap with the developed countries in the world, it is beneficial to eliminate trade barriers and increase foreign exchange through exports in order to promote the development of China's lock industry and participate in international competition. Therefore, the original door lock standards must be revised. The State Light Industry Bureau and the National Center for Standardization of Daily Use Hardware issued separate notices to revise the original four door lock standards. And the original marble door lock (SG205-80) and the outer double door lock (GB8385-87) combined to increase the double buckle (Tiger) door lock and become the standard for exterior door locks. The current implementation of the light industry standard QB is the revised new standard. The revised principle of the new standard is: Based on the original standard, it can only be improved and must not be reduced. We must fundamentally reverse the backwardness of our country's products with low grades, low prices, and poor levels of technology. We must adopt a policy of careful study and differential treatment and revise them in light of China's actual conditions. In the process of revision, non-equivalent degrees in various degrees are based on the United States ANSI (American National Standard), British BS (British National Standards) and JIS (Japanese Industrial Standards) and other foreign advanced standards as the basis. At the same time, in accordance with the requirements of national laws and regulations and in combination with the actual conditions of products, grading regulations have been made according to different needs during the standard revision process. Externally-mounted door locks and ball-type door locks have been classified into two categories: A-level and B-level. Distinguishes the distinction between high-class villas, apartments and commercial houses, and residential units. The newly revised standard requires higher than the original standard. Outer door lock A grade, the main indicators of the British BS5872 to the B level, B grade products than our original standard, but lower than the British BS5872 B grade product is lower (Note: British BS standard B grade product ratio A grade height), Grade A in spherical door locks, the main indicators of which are close to the level of secondary locks in the United States ANSI/BAMA.A156.2-1996. The main indicators of Class B products are close to the three-level lock level in ANSI/BA and A.A156.2-1996, and are larger than China's original standards. Therefore, China's revised standards for door locks QB/T2473-2000, QB/T2475-2000, QB/T2474-2000 and QB/T2476-2000 are all higher than the original standard. Consider before buying Consumers should consider the following aspects before buying locks. 1. The place used and its importance. That is, consider using on street gates, hall doors, rooms, bathrooms, or passages to select the product that suits the desired function. 2. The use of the environment, conditions and their requirements. Should consider the use of the environment, such as dry humidity, door structure, thickness, open the door left or right, open the door or open the door to prevent buying the wrong product. 3. Consider the coordination with the decorative environment. According to their own preferences, the purchase of products should consider the coordination and matching of their homes should be consistent. 4. Consider the status of family members Consider whether there are elderly, children, or people with disabilities in your home and choose what products to use. 5. Considering economic affordability Combining the economic status of the family, the economy can be purchased with high-end products, and the economically less-selectable products with lower grades can be selected. However, whether high-end or low-end products are selected, it is necessary to consider whether the strength of the production enterprises is strong and the quality is stable. It is advisable to choose products that are well-known companies, to avoid financial losses and unnecessary troubles and problems in daily life. 6. Consider the dealer's reputation and service standards Prevent some dealers from proceeding from their own interests and recommend some counterfeit and fake products to consumers. How to choose when purchasing When purchasing lock products, pay attention to the following 1. Should choose well-known products, stable quality and good after-sales service products. 2. First, check whether the marks and signs of the purchased product packaging are complete (including the product's implementation standards, grades, manufacturer's name, address, and date of manufacture). Whether the packaging is firm or not, the content of the manual is consistent with the product, beware of exaggeration and inconsistent with the facts. phenomenon. 3. Observe the appearance quality of the product, including whether the lock head, lock body, lock tongue, handle and cover plate components and related accessories are complete, and whether the surface color of the plating parts and paint spray parts is bright and uniform, and whether there are signs of rust, oxidation or damage. . 4. Check whether the product's use function is reliable and flexible. Select more than two products to check and check. In particular, when buying a two-way lock product, you must use all the keys to test the internal and external locks respectively. Also check the insurance organization of the product. It is recommended to try each lock at least three times. 5. Then check the key's dentifrice condition. If there are five spoons, each key should have no less than three different spoons. At the same time, the first tooth and the fifth tooth should not try to select the deepest spoon, which will facilitate the insertion of the key. Pull and hard to break. Hardware Selection Hardware Villa Design Stainless Steel Decorative Aluminum Door Price Villa Door Villa Exterior Villa Picture Villa Villa Area Pet screens have become a popular choice for pet owners seeking a durable and reliable solution to protect their windows and doors from the antics of their furry friends. These screens are specifically designed to withstand the scratching, clawing, and jumping of pets, ensuring long-lasting performance. 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