Welcome to buy q345b i beam chemical composition,carbon for bridge q345b oil transportation performance
GB/T1591 Q345B carbon and low alloy steel - BEBON steel. BBN steel offer GB/T1591 Q345B carbon and low alloy steel in China,Q345B is low alloy structural steel with good mechanical properties, low temperature performance, plasticity and good weldability, it is mostly used in low pressure vessel, oil tank, vehicles, cranes, mining machinery, power stations, mechanical parts, building structure for bridge q345b oil transportation performance
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