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Shanxi Weigao Petroleum Drilling Tools CO.,LTD

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api drill collar for sale
api drill collar for sale
Specification: 105, 121,146, 89, 159, 165, 178, 203
Detail: Description: It’s made from rolled or forged AISI4145H chrome-molybdenum steel. The content of chemical composition and microelement is controlled efficiently throughout the whole process. According to its different figur...
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