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2" Blind Flange ASTM A182 Grade F316/316L Dual Grade Class 600 ASME B16.5 RF, Find Details and Price about F316/316L Dual Grade Steel Flange Blind Flange from 2" Blind Flange ASTM A182 Grade F316/316L Dual Grade Class 600 ASME B16.5 RF - CANGZHOU HONGDING PIPE INDUSTRY CO., LTD