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The ASTM A847 standard specifies requirements for high-strength, low-alloy structural tubes that are produced by cold-forming or welding. Bridge and building structures requiring high strength and enhanced atmospheric corrosion resistance, including those constructed with welded, riveted, or bolted construction, as well as general structural applications.
ASME SA 847 Corten Steel Pipes we supply are tensile strength, yield strength, and elongation properties that are required. In the process of heat and product analysis, steel materials are analysed to ensure that they meet the required chemical composition for carbon, manganese, phosphorus, sulphur, and copper. There are no tolerances outside of the specified plus and minus values for A847 square and rectangular tubing. Length tolerance for structural tubing is in accordance with the specified values. Twist tolerances indicated on every ERW pipe.
Cold-formed square and rectangular tubes and pipes are covered by ASTM standard A847. In most environments, this steel resists atmospheric corrosion significantly better than carbon steel with or without copper addition. Bridges and other structures requiring enhanced corrosion resistance and high strength should use ASTM A847. For many applications, A847 can be used unpainted when properly designed and exposed to the atmosphere.
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