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Hi, this is Marilyn, glad to contact with you! Dalian UniTech Ltd. manufactures BS, ANSI, AWWA, DIN, JIN standard forging steel flange, plate steel flange, stainless steel flange, mild steel flange, slip-on flange, slip-on welding flange, socket welding flange, lap joint flange, welding neck flange, blind flange, orifice flange, reducing flange, pad type flange, loose hubbed flange, welding plate flange, welding neck collar, welding-on collar, loose plate flange, threaded flange. (SO flange, WN flange, PL f |