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By certification 
Coal Pick Model:
U82.U84.U85.U92.U94.U95.U62.U47.U138.U765.U170.S100.S120.S135.S150S160.S170.S200.5030.C31, etc..
Support manufacture according requirement.
（Model mainly based on coal hardness, pick base）
Coal Pick manufacture level:
• Pick tip hardness: HRC>65；
• Pick body hardness: HRC 28-32；
• Pick surface hardness: HV＞2000；Pick with special heat treatment process, 40-45 degrees, surface no oxidation.
U82.U84.U85.U92.U94.U95.U62.U47.U138.U765.U170.S100.S120.S135.S150S160.S170.S200.5030.C31, etc..
Support manufacture according requirement.
（Model mainly based on coal hardness, pick base）
Coal Pick manufacture level:
• Pick tip hardness: HRC>65；
• Pick body hardness: HRC 28-32；
• Pick surface hardness: HV＞2000；Pick with special heat treatment process, 40-45 degrees, surface no oxidation.
