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Q235 ???? ???????? C20a 200 73 7 11 C ???? ?????

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Hot Rolled Q345 C20a 200*73*7*11 Steel Strut Channel H Beams in accordance with JIS China Q235 W8X15 H Beam Steel H-Beam Steel - China H

China Q235 W8X15 H Beam Steel H-Beam Steel,Find details about China H Beam,H Iron Beams from Q235 W8X15 H Beam Steel H-Beam Steel - WUGANG CHANG YU

Carbon dots as new eco-friendly and effective corrosion

Dec 05,2017 Q235 ???? ???????? C20a 200 73 7 11 C ???? ?????#0183;It can be seen that the percentage atomic content of Fe and C for polished Q235 carbon steel is 73.74% and 23.02%,and those for Q235 carbon steel immersion in 1 M HCl solution without and with 1 mg/L CDs are 47.53%,19.87% and 40.28%,23.06%,respectively.

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