Direct Automatic, Semi-Automatic and Removable Steel
Complete selection of Vehicle Gate and Access
control Products at our Main Store.
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the most Comprehensive Online Listing of Automatic Gates, Access Control,
Guard Tour and Bollard Products.
Automatic:that raise and lower by remote control. Much like a gate operator they include a control panel with an air pump (pneumatic) or electric motor/ gear box (mechanical).
Semi-Automatic: are pushed down by hand and locked with a key. To raise the bollard, turn the locking key and the bollard will rise without lifting it up.
Manual: are lowered down by hand and locked with a key. To raise the bollard, turn the locking key and lift the bollard by hand and lock it the up position.
Fixed: are not removable and are bolted down to a concrete slab or poured in place with concrete.
Removable: are like a fixed bollard except they can be unlocked, lifted out and carried away.
Plastic: are like a removable bollard they can be unlocked, lifted out or simply carried away.
What you should know about Stainless Steel, is it really stainless?
Stainless Steel is a generic name that was used originally to market cutlery and is now used as the name for a wide range of chromium based steels.
Stainless Steel contains iron alloys that have a minimum of 10.5% chromium content. The higher the chromium content the more stain resistant the steel is when forming Chromium Oxide. Other metals are added such as nickel, titanium and copper to improve the stain resistance and increase the strength of the metal.
Since Iron is a component it can still oxidize and show some rusting but not to the same extent that carbon steel will and it can show light corrosion when exposed to the environment. In structural or mechanical applications it is used for its rust resistant properties. Stainless steel when exposed to the environment will form a passive film of chromium oxide, which prevents further surface corrosion by because the thin layer blocks further oxygen diffusion to the steel and stops corrosion from spreading into the deep portions of the metal. So Stainless steel corrodes on the surface, but it is the corrosion layer of Chromium Oxide that makes it so durable.