Tshaj 3000 pcs ntawm BWL Drill rods (BQ Qws) hauv cov txheej txheem ntawm kev tsim khoom, peb yuav xa mus rau peb cov neeg siv khoom thaum kawg ntawm lub Kaum Ib Hlis.
Khoom siv: 4130 qib high alloy raj
Machining: Mazak CNC los ntawm Nyiv
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Pob: 19 pcs / pob, hex cap.
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