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picket line special for track rail in curve set by a portion of the rail or other profiled with a metal plate sliding bloccabile with indentation of refand according with the lower tapered end infissione directly in the ground
picket line special for track rail in curve set by a portion of the rail or other profiled with a metal plate sliding bloccabile with indentation of refand according with the lower tapered end infissione directly in the ground
