From Star Wars: The Old Republic Wiki
Armormech is the ability to work with hard metals, alloys and synthetic materials to construct armor for non-Force users. Vendor-purchased fluxes are used during the armor creation process to refine the materials to ensure suitability. Armormechs can reverse engineer their crafted armor and possibly discover new ways to improve their armor creation.
One of the reccomended skills for Armormech is Scavenging. Scavenging provides the necessary metals and compounds to create armor. While reverse engineering the items, one finds that the reverse engineered armor can turn from a green schematic (premium), to a blue schematic (prototype) and finally purple (artifact).
See reverse engineering for more.
level 0 - Belts
level 10 - Boots
level 20 - Gloves
 Complimentary skills