Raymond mill roller and Raymond series mill ring manufacturer in China ,we are professional Raymond mill roller and Raymond series mill ring suppliers and distributor.
Comparing with steel sheet ASTM A514 Grade Q and sheet A514 Grade R, for the chemical composition,steel sheet ASTM A514 Grade Q contains Chromium 1.00-1.50 %,and steel plates ASTM A514 Grade R just contains 0.35-0.65%.
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