Locks are the most important safety components of ordinary households. Due to the increasing shackles or unlocking of burglary, the importance of locks has increased. But in the face of a variety of locks, many buyers are confused, because these locks are either expensive or unsatisfactory. So, how can we pick a safe, usable and durable lock? The Taiyuan Lock Industry Association reminds you to look at the following key points: Look at the material The lock materials on the market are basically divided into stainless steel, copper, zinc alloy, iron steel and aluminum. Stainless steel has good strength, strong corrosion resistance and constant color. It is the best lock material; copper is more versatile, mechanical properties are superior, and the price is also expensive; high-quality zinc alloy is strong and wear-resistant, anti-corrosion ability is very strong, easy Forming, generally used to make mid-range locks. Look at the surface treatment The general surface treatment includes electroplating, spraying and coloring. Through these surface treatments, a protective film can be formed on the product to prevent corrosion and rust, and at the same time, the product is more beautiful and durable, and the quality of the product can be directly measured. Good quality locks are generally electroplated, with a moderate coating, very uniform coating, bright colors, no signs of air bubbles, rust and oxidation. See functional design and key components There are many types of locks, and what kind of locks to choose depends on where they are used. Large brands with high quality requirements have very detailed product classifications for different functional requirements, such as channel locks, bathroom locks, storage locks, door locks, etc. See standard execution Foreign countries have very strict standards for hardware locks, so the quality of imported products is relatively superior. At present, the Ministry of Light Industry has used some foreign standards to revise the original GB (for national mandatory national standards) into the current higher requirements QB (Enterprise Standard). Small manufacturers do not perform according to standards in order to save costs, and big brands implement standards when producing products. Buy a small trick It is necessary to select large brands with high reputation, good quality and long history. Small manufacturers are often sold directly through some agents or shops, and there is no strength and stable system network for after-sales service. To be based on your actual use. Different locks are designed for different houses and doors. Generally, the entrance door is made of stainless steel, copper or a high-quality zinc alloy lock with thick design. The high-quality zinc alloy for the door lock is beautiful and durable and economical. To lick the weight, feel better than the hand, listen to the sound. This is the same as picking the faucet. It is also known as stainless steel, pure copper or zinc alloy. Some small brands will cut corners and use hollow materials and inferior materials. These materials are very light and have a bad hand. The sound is very stuffy; the good lock is the opposite. Editor in charge: Liu Changqi
The company research and development of double servo precision automatia pipe cutting machine, suitable for all kinds of pipe material, and the soild pipe cutting, especially suitable for the mass production of the enterprise, the machine has high production efficiency, good rigity,high precision(make sure the error within 5 wire), one feed can cut more piece.The machine adopts PLC control, the most advanced double servo positioning system,hydraulic clamping feeding. Make up the previous machine of rust, bending the disadvantages of insufficient material, eliminate waste.
The machine has warning for borken blades/no material/remain material in insufficient, high production efficiency,and can achieve more than one machine management.The pipe cutting machine adopts the cross roller guide rail, with good rigidity, small rolling friction, long life, high precision etc.Vertical and horizontal drag plate with double feed servo system, a fast response, stable feeding. The Tube pipe cutting machine use special bearings steel cutter chip, easy and quick to change cutter.The mahcine can be divided into three side Chamfer Pipe Cutting Machine and od turning Steel Pipe Cutting Machine.
Pipe Cutting Machine,Taper Roller Bearing Machine,Bearing Ring Machine,Pipe Parting Machine Shaoxing Sunfong Intelligent Equipment Inc. , https://www.zjsxsunfong.com