Tensile Armour Layer
Structural layer with a lay angle typically between 20° and 55°, which consists of helically wound metallic wires, and is used to sustain, totally or partially, tensile loads and internal pressure. NOTE Tensile armour layers are typically counter-wound in pairs.
Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards