Under normal circumstances, the ball lock and handle lock can not be installed on the door with the frame width less than 90mm around the door. The width of the frame around the door should be 60mm~100mm. The ball lock should be 60mm. If it is more than 100mm, you can use the big cover. 70mm lock tongue lock. Second, the surface treatment Surface treatment roughly classified into electroplating, spraying, and three kinds of colored, locks good quality, the use of a plating treatment, the plating smooth and delicate, even moderate, bright color, no bubbles, signs of rust and oxidation. In addition, the lock body can not be pointed, and it is easy to hurt people. Third, the material The lock material is roughly divided into stainless steel, copper, and zinc alloy. High-strength stainless steel, strong corrosion resistance, no discoloration, is the best lock material; copper is more versatile, superior mechanical properties, higher price; high-quality zinc alloy is strong and wear-resistant, corrosion-resistant, easy to shape, used for Mid-range lock. Tips: Identify pure copper locks Look: Locks made of pure copper are generally polished and frosted. Compared to copper plating, the color is dark, but it is natural. 掂: 掂 its weight, pure copper locks feel heavy, while stainless steel locks are significantly lighter. Listen: Listen to the sound of its opening, the copper-plated lock is relatively dull, and the sound of the stainless steel lock is very crisp. Fourth, feel The feel of the door lock is determined by the spring, and the quality of the spring determines the service life of the door lock. When you purchase, you should try the toughness of the door lock spring. The feel of a good spring is very soft, not too soft or too hard. Fifth, the implementation of standards Foreign countries have very strict standards for hardware locks. At present, the Ministry of Light Industry has used some foreign standards to revise the original GB to the current higher requirements of QB, and must be clear about the product's implementation standards when purchasing. Sixth, lock style There are also many styles of locks, so be sure to keep in mind the style of the interior doors. Seven, priority to choose a big brand How to choose the door lock, the brand is very important, the general quality assurance of the big brand is better, we must not be cheap in the door lock! Promotional Bags,Eco Friendly Promotional Bag,Non-Woven Promotional Bag,Promotional Drawstring Gift Bag Dongguan C.Y. RedApple Industrial Limited , https://www.hpgbags.com
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7 steps to help you choose quality locks to keep your family safe
First, pay attention to the width of the door frame