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astm corten steel b hot rolled H beam for black diamond, antwerp belgium
astm corten steel b hot rolled H beam for black diamond, antwerp belgium
- Comments: Q370qC, Q370qD, astm corten steel b hot rolled H beam and Q370qE are structural steel plates for bridges. It is required to have high strength, toughness and to withstand the load and impact of rolling stock, and have good fatigue resistance, certain low
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