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Apr High-End 4130 Nrq Drilling Rod 3m with Heat Treatment / Dcdma Standard for Canada Australia Brazil Iran Russia, Find Details and Price about Nrq Drill Rod Drill Pipe from Apr High-End 4130 Nrq Drilling Rod 3m with Heat Treatment / Dcdma Standard for Canada Australia Brazil Iran Russia - Au-Prospect Drilling Tools(Wuxi)Co., Ltd.