Sell Seamless Steel Tubes for Structures

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Product Origin:China
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Description:Features: 1) Steel type: 10# - 45# 2) Used in general project structures and mechanical building structures 3) Can be used as the cold-rolled accurate steel tube blanks too 4) Calibrating standard: GB/T8162-99 5) External diameter: 6 - 80mm 6) Wall thickness: 0.8 - 12mm