High Steel Ingersoll Rand Drill Pipe 4.5inch S135 Grade Steel
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High Steel Ingersoll Rand Drill Pipe 4.5" S135 grade steel Description A casing is a large diameter pipe used as a structural retainer for the walls of an oil and gas well or wellbore. It is inserted into the wellbore and held in place to protect the ......
Langfang Baiwei Drill Co., Ltd.
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