How correctly to select steel shutters

Many Customers are interested, so what should be entrance steel doors and how it correctly to select? What criteria of a choice exist? Uniqueness? Reliability? Durability? A warranty period? And if to speak about steel shutters with glass? Questions much. We will try to answer  from them.

First, steel shutters should provide some protective functions:

Counteraction to a rough manual power (it is defined by durability инадежностью designs)
Counteraction to “intellectual breaking» (it is defined by complexity and “cunning” of clasps)
Any counteraction to non-standard impacts (there are fire-protective doors, bulletproof doors, the doors supplied with control units of access – from simple glass to audio- and videosystems ит.п.)

Secondly, steel shutters should provide initial functionality, protection  environments: the steel shutter should possess defined warmly –  properties. Thirdly, the door should not be opposite by sight, hearing and a smell – that is should be somehow decorated,  to creak and knock, should be made without application of toxic materials. At last, the fourth group of characteristics concerns more likely sellers, than directly steel shutters: a door and its parts should be reliable, the seller should give and carry out warranties on the production (in this case on an entrance steel shutter).

It is obvious that it is impossible to define «an ideal door». It is necessary to find out at first for what it is intended, and further to select model according to requirements and financial possibilities. Thus, we have formulated the first (and, probably, main) a principle of “the reasonable approach» to a choice of an entrance steel shutter: first of all it is necessary to understand, you will show what requirements to an outer door, and, accordingly, what group of the characteristics resulted above, will have the main thing, and what – minor value at the further selection of a steel shutter.

Stability to a brute force not the main most, in our opinion. Really, the outer door for a usual dwelling unit in a multiroom town house can be enough weak: if it will start to crack by means of a sledge hammer  malefactors will manage  to itself attention. Absolutely differently it is necessary to approach to a choice entrance to a steel shutter on a country cottage or an unprotected warehouse: in this case the probability of “rough breaking» steel shutter is high, and the door design should provide a high mechanical strength of a product.

Unlike rough impact, «intellectual breaking» entrance steel industrial doors demands some qualification of the burglar and can be made almost silently. Accordingly, the burglar has almost unlimited stock of time (almost any clasp of a door not всостоянии to resist to the qualified burglar more than 15 minutes) at the order. So the majority of room doors in big cities is opened. As a rule, object of “intellectual breaking» is the clasp, and, a sight, the clasp defines (we will repeat, in standard city conditions)  an entrance steel shutter вцелом.

Therefore:

On clasps it is not necessary to save, if you want to receive a metal outer door steady against unapproved penetration
It is better to put two clasps on entrance steel shutters, and different systems (cylinder ) — opening of different types of clasps demands the expert of higher qualification
If you seriously are afraid of breaking — that it makes sense to establish special additional protection on clasps
Remember: any clasp can be opened, therefore if will calculate that your dwelling unit can draw attention of high quality experts – establish the alarm system.

We have considered the characteristics concerning usual room entrance steel shutters. If to you the outer door possessing some special properties, unfortunately, it is necessary to offer any indicators is necessary for any reasons: for example, fire-protective doors should be completed with special clasps which maintain thermal loadings, but, as a rule, are less steady against breaking; bulletproof entrance steel shutters it is heavier standard that raises deterioration of clasps and mobile component parts.