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非标含钴直柄钻头301.////3.0533.033.07.3.04/3.08/3.023.06//09
gcr15轴承钢珠2.97 2.98 2.99 3 3.0 3.023 3.03 .105 mm钢球滚珠
深立工钨钢钻头3.0合301/3.023/.03/3.3柄/3.1704/3.06/3.07/.3.0
/焊丝/铜焊5铁6J1/公斤/62.570镀S -50.2.05/Q钢3.023碳/氩弧焊丝