How are vault door grades classified? Explanation of application scenarios for Grade A, B, and C vault doors

Many financial institutions and jewelry stores are unclear about the grading standards for vault doors when constructing vaults, as different grades directly determine the duration of resistance against violent attacks. According to domestic regulations, vault doors are classified into three levels: Grade A, Grade B, and Grade C.

Grade A vault doors must withstand forced entry for no less than 120 minutes and are typically used in central bank headquarters and precious metal reserve facilities. Grade B doors offer 60 minutes of protection and are suitable for branch banks and large jewelry malls. Grade C doors provide 30 minutes of protection and are ideal for small gold shops and pawnshops.

When selecting a vault door, one should not only consider the thickness of the outer steel plate but also pay close attention to lock configurations, anti-drilling interlayers, and fire-resistant structures. Guangdong Longdian Security Products Co., Ltd., with over two decades of expertise in specialized security doors and windows, offers vault doors meeting all standard grades and supports custom non-standard dimensions. All products come with complete test reports, satisfying requirements for domestic project bidding and export markets in Southeast Asia.

When purchasing vault doors, it is advisable to confirm in advance the opening size, door swing direction, and whether fire resistance is required—manufacturers can then provide professional solutions accordingly.