The SRB segments vere regularly reused, not sure about the parachutes and the nozzle stearing gear. Still reportedly it was more expensive to reuse the segments

The SRB segments vere regularly reused, not sure about the parachutes and the nozzle stearing gear. Still reportedly it was more expensive to reuse the segments (basically big metal tubes) than to build new set if SRBs for each flight, possibly using better techniques (monolithic carbon fibre overwrapped solid motors, like on Ariane 5/6).