127mm O.D. E75 Steel Grade Reverse Circulation Drill Rod / RC Drill Pipe
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Double Wall Rods Reverse Cireulation Drilling Pipe For Geological Research Product Description In order to realize the reverse circulation drilling process of the through-the-hole DTH hammer, the matching drilling tool system mainly includes a double-wall ......
Langfang Baiwei Drill Co., Ltd.
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127mm Reverse Circulation Drill Rod , Double Wall Drill Pipe For Rc Drilling
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127mm RC Water Well Drill Rod Double Wall Drill Pipe For Rc Drilling Description Double-wall drill pipe is composed of inner and outer layers of drill pipe (called inner pipe and outer pipe). An annular gap is formed between the inner and outer pipes......
Glorytek Industry (Beijing) Co., Ltd.
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