详情描述

The country has strict production requirements for anti-theft doors, categorizing them into four safety levels based on anti-destruction time: Grade A, B, C, and D. Grade A must withstand at least 30 minutes, Grade B at least 15 minutes, Grade C at least 10 minutes, and Grade D at least 6 minutes.

Security doors are available in two materials: steel and stainless steel. The steel thickness of the door frame must be at least 1.5mm, and the door leaf steel thickness must be at least 0.8mm. The weight of the door is generally over 40kg.