65MN Spring Steel Strip Sheet Width 20/30/40mm Thick 0.5/0.6/0.8/1/1.2/1.52/2.5/3/4mm Quench Steel Belt Spring Steel Plate

65MN Spring Steel Strip Sheet Width 20/30/40mm Thick 0.5/0.6/0.8/1/1.2/1.52/2.5/3/4mm Quench Steel Belt Spring Steel Plate

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