Author: Mark

Firstly, a steel door must provide some security features. There are several of these functions: resistance to brute physical force (determined by the strength and reliability of the structure); counteracting “intellectual breaking” (determined by the complexity and “cunning” of locks); counteraction to various kinds of non-standard impacts (there are fire doors, bulletproof doors, vault, panic room doors, doors equipped with access control devices – from simple glass to audio and video systems, etc.) Secondly, the door must provide initial functionality, protection from the external environment: it must have certain heat and sound insulation properties. Thirdly, the door should not be…

Read More