Apprentice question
Verify first
Verify before you commit. Cheap to catch now.
Narrow sharp straps can damage round duct skin. Replace them with approved heavier/wider support or saddles that spread the load.
['If a strap acts like a knife edge under a round pipe, the support is damaging the material it is supposed to carry.', 'Check strap gauge/width, duct size, insulation, vibration, and pressure class. Recovery may be heavy-gauge banding, lined saddle, split ring, trapeze cradle, or other approved support.']