What does " improved-bond rods" and " smooth round rod" mean? They are sort of terminologies used in steel-making.
Thanks.
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BTW: To Those who have doubt about my intention of asking so many "stupid" questions, I have to ID myself. I am a professional translator here in China and my work includes but not limited to: heavy machinery, electrical machine and chemical engineering. No wonder once Tornado ponders over my versatility of my work. 
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