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T Series Forged Steel Diamond Core Drilling Pipe Ore Mining Yield Strength 1030/1040MPa Tensile Strength 1120/1130MPa Drill Rod, Find Details and Price about Drill Rod Core Drill Rod from T Series Forged Steel Diamond Core Drilling Pipe Ore Mining Yield Strength 1030/1040MPa Tensile Strength 1120/1130MPa Drill Rod - Cge Group Wuxi Drilling Tools Co., Ltd.