The special door actually refers to the door used in special occasions or for special purposes, and the polyurethane material is filled by high pressure foaming.
Special door type
1, fire door
The wooden fire door is made of fire-resistant wood or non-combustible wood products to make the door frame, the door leaf frame and the door leaf panel. If the door fan is filled with materials, it is filled with fire-proof and heat-insulating materials that are non-toxic and harmless to the human body, and are composed of fireproof hardware accessories. A door with certain fire resistance. According to fire resistance, it is divided into heat-insulated fire door (Class A), partial heat-insulated fire door (Class B), and non-insulated fire door (Class C).
2, sound insulation door
The sound insulation effect is related to the material of the door leaf and the sealing of the door joint. A multi-layer composite structure is often used, and a sound absorbing material (such as glass wool, mineral wool, glass fiber, etc.) is also filled between the two layers of panels.
3, anti-theft security door
Equipped with anti-theft lock, it can resist abnormal opening under certain conditions for a certain period of time, and has certain safety protection performance and meets the corresponding anti-theft security level. According to the anti-destruction time of the product, the thickness of the board and other indicators, the anti-theft security door is divided into anti-theft security levels. The anti-theft security level of the security door manufacturers is divided into four levels, A, B, C, D, of which the first level is the highest level, which is decremented in turn. The anti-theft security door should adopt three-position multi-lock tongue lock, the number of lock points between the door frame and the door leaf, according to the anti-theft security level A, B, C, Ding should be no less than 12, 10, 8, and 6.
Editor in charge: Chen Jiacun
HCH Hardware is a bolt manufacturer and provides all kindsof fasteners since 2008. Our main products includestandard bolts, nuts, Screws, washers, Pins and OEM parts. We have integrated resources from more than 50 top level fastener factories in Jiaxing, Haiyan, Ningbo,Dainan, Qintongareas, and have established long term relationships with them.We arenow serving for over 60 customers in South and North America.We can provide you with one stop services to meet you different needs, which can save your purchasing cost and optimize your efficiency. HCH Hardware was certified by ISO9001-2015 on 02/25/2021.We especially emphasize on products quality,HCH Hardware have necessary conditions for quality control with applicable processes and experienced experts. Appropriate production processes and quality control
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