How about the security door in spring?

In spring, security doors have been at the forefront of research and development, and focus on core technology development. In recent years, spring has successfully made a variety of products occupy a large share of the domestic market. Through continuous improvement and development, spring has formed a complete quality control system. In the spring security door, "quality" is not an abstract concept From material testing to on-line testing and finished product testing, the spring security door runs through every link of production, strictly controls every product, and persistently implements the "boutique strategy". 1. Manufacturing technology: 1. Sheet metal stamping and folding system introduces the most advanced sheet metal stamping and folding system in the world. Using Windows NT operating system, the operation is simple and more flexible, and it is suitable for all kinds of high-precision sheet metal processing. 2. The door panel of hydraulic equipment is processed by 2000 tons of hydraulic one-step molding equipment, with smooth surface and increased strength. 3. The door frame of the rolling equipment adopts the rolling forming process, and the rolled door frame has beautiful appearance and strong rigidity. 4. Automatic leveling and shearing system adopts automatic control system, which automatically calibrates the flat plate and accurately cuts it into required specifications. The leveling accuracy can reach 1-2mm/m2, and the shearing accuracy can reach about 0.05mm/m. The steel plate is flat, which ensures the quality of the door panel. 5. The automatic spraying equipment adopts the most advanced imported spraying assembly line, with bright color and strong adhesion. 2. Appearance features: 1, double-row lengthened and bold locking tongue, lengthened and widened handle panel and unique handle design. Applying the latest patented technology, it will not be damaged by external forces as much as possible, and the safety factor will be doubled. Small knowledge: security level of security door; It is divided into three grades: A, B and C, among which C has the highest anti-theft performance, followed by B, and A is the lowest, among which A is more suitable for ordinary families. It seems that this security door is an advanced choice for ordinary families. 2. Strengthen the side lock. For safety, in addition to a main lock, the whole door is also equipped with double rows of side lock points and a protective lock anti-pick device corresponding to the main lock, which makes the overall anti-pick effect reach a higher level. When you are at home, you can turn the knob inside to lock the door, even if someone outside has a key, you can't open the door, which will make you sleep better at night. Tip: The protruding length of the locking tongue (bolt) of the anti-theft lock for security doors should not be less than 14 mm for Class A security doors and 20 mm for Class B security doors. The shell of the anti-theft lock is generally made of steel plate with a thickness of not less than 2 mm or materials with certain strength. Flanges and openings shall be welded firmly or stamped integrally. In the key position of the main bolt (bolt) transmission device corresponding to the lock body, there should be protection measures such as anti-drilling steel plate or anti-drilling sleeve. 3. Extra-thick door leaves are safer. The heavy door leaf looks stronger, with multiple seals, superior sound insulation, heat preservation and sealing performance.