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RELEASABLE JOINTING ELEMENTS MAINLY SCREWS MADE OF HIGH-STRENGTH ALUMINIUM ALLOY OF TENSILE STRENGTH OF 500 TO 650 N-SQUARE MM AND HAVING IMPROVED CORROSION RESISTANCE AND PROCESS FOR MANUFACTURING THEM
RELEASABLE JOINTING ELEMENTS MAINLY SCREWS MADE OF HIGH-STRENGTH ALUMINIUM ALLOY OF TENSILE STRENGTH OF 500 TO 650 N-SQUARE MM AND HAVING IMPROVED CORROSION RESISTANCE AND PROCESS FOR MANUFACTURING THEM
