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GB/T1591 Q345B H/I Beam/ channel steel is steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur, chromium and nickel).
30CrNi3 forged steel round bar is a kind of alloy steel round bar. KUNFENG offer 30CrNi3 forged steel round bar and 30CrNi3 hot rolled round bar with good quality and fast delivery at best price.
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