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Postato il 01/17/2021 : 00:16:21 ASTM A709-50W Corten Weathering Steel Pipe is a soaring potency steel alloy with a number of outstanding features like durability, reliability,corrosion resistance and more. ASTM A709-50W is a standard specification for structural steel in bridges. ASTM A709-50W Corten Steel Welded Pipe is specifically designed for use in bridges.https://www.baosteelpipes.com/corten-steel-pipe/astm-a709-50w-corten-weathering-steel-pipe.html