сталеві надовби (перешкоди)
steel (cold steel)
appliqué steel armor
caterpillar steel track
cold steel/ weapon
electro-slag refined (ESR) steel
high-strength steel
homogeneous steel casting
single-strand, high-strength, spring-steel wire
steel bar
steel core
steel helmet
steel shaft
steel spheres
all-welded cast steel turret
anticorrosive barrel steel
armor steel door
armor steel fuel tank
carbon gun steel
hard steel plug
gun steel alloys
steel-tube framework
welded steel-tube framework
silicon-manganese steel
neutron-resisting boron-composite steel armor
antiboat obstacle
antipersonnel obstacle
antipersonnel obstacle breaching system (APOBS)
antitank obstacle
antivehicular obstacle
artificial obstacle
barbed wire obstacle
beach obstacle