Metal flexible hose

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These are the parameters for the metal hose: Type: Metal hose; Functions (thermal compensation: ■, bending: /, vibration: ■); Connection dimensions: 20” Sch30; Connection type (inlet: flange (DN500, RF, CL150), outlet: flange (DN500, RF, CL150)); Medium (name: flushing fluid; maximum vacuum level (Pa.G): /, normal vacuum level (Pa.G): /, maximum pressure (Mpa.G): 0.1, normal pressure (Mpa.G): 0.05, maximum temperature (°C): 158, normal temperature (°C): 80); Free length (mm): 2600 (including flanges); Pre-tightening length (mm): /; With inner sleeve: /, Without inner sleeve: ■; Maximum lateral displacement (mm): ±100; Maximum angular displacement (deg): /; Maximum compression amount (mm): 100; Maximum extension amount (mm): 100; Stiffness of the expansion joint (N/mm): /; Vibration frequency (1/min): /; Number of cycles: /; Materials (wave section: /, straight section: /, inner sleeve: /); Hydrostatic test pressure (Mpa.G): /; Pneumatic test pressure (Mpa.G): /. I would like to ask whether the metal hose has an installation length – is its installation length the same as its free length?