... different and suitable typesButton bitsmall tooth, big tooth,conical inserts,chisel insertsPackingin wooden case or steel casePayment termT/TDelivery timeabout two ...
competitive price 1. The grade of materials: 45, 20Cr, 40Cr , 35Cr Mo , 42Cr Mo, 20CrMnMo, 20CrMnTi, 17CrNiMo6, 20CrNi2Mo2. Hardness: 56-60 HRC is the hardest; 40-55 HRC is the average hardness; below 28 HRC is the soft3.Detection methods ultrasonic flaw detection,Manetic particle testing gear
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