发布人：http://www.kdjlm.com 发布时间：2017-11-16 16:26:47
1, to see the safety level, crystal shutter door safety is divided into A, B, C class. C class anti-theft performance is highest, B level secondly, class a lowest, most of the market is a, is generally applicable to the general family.
2, to see the certificate, Ji'nan rolling shutter door must have statutory inspection agency issued test certificate.
3, look at the material, stainless steel is more commonly used, beautiful, durable, rust prevention. Pay attention to two points: the popular stainless steel electric rolling shutter door material is grade 302 and 304; steel plate thickness door frame steel plate thickness is not less than 2cm, the front door leaf thickness is generally between 0.8cm to 1cm, the door leaf has skeleton and reinforcement plate.
4, look at locks, good crystal shutter door generally use three directions locks or five directions locks, not only lock lock, upper and lower cross bar can be inserted locked, fixed to the door. Most doors are fitted with rubber seals on the door frame, and the metal crash does not occur when the door is closed.
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