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MS-A-403

Features ● Material: Zinc alloy lock body, nuts, copper lock cylinder, galvanized lock plate ● Surface Treatment: Sandblasted chrome plating ● Applicable Door Thickness: 1–5 mm Material ● Zinc Alloy Surface Treatment ● Electroplating

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Specifications and Parameters

　　As the name suggests, a door lock is a device used to secure a door and prevent unauthorized entry. Door locks come in many varieties, and the requirements for them vary depending on the application. In typical households, anti-theft door locks are commonly used because they offer high security at a relatively affordable price. A security door lock serves as a critical safeguard for household property; therefore, its primary feature is robust anti-theft performance. Modern high-quality security locks are increasingly made from steel rather than the traditional cast iron, offering superior wear resistance and enhancing home security. Security door locks are graded according to their anti-theft performance, so it is advisable to choose one with a higher grade whenever possible. The material of the lock is closely linked to its durability; when purchasing, be sure to ask the retailer what materials were used—for example, pay attention to the differences between cast iron and steel. Steel is harder and more robust than cast iron, making it much more difficult for burglars to saw through, thus providing greater security.