BQ double tube core barrel assembly -step by step

[@ESG_1122]

👍👍

[@jinshidrilltech1903]

thank you very much, can contact me by whatsapp:[phone],Ren

[@sahendrayadav8002]

Good job sir jee ❤

[@TheDriller571]

No Pipe Dope ? You know those parts are more likely to break than properly greased when put under stress down the Drill Hole. There is a reason to Grease all threads and Bearings.

[@jinshidrilltech1903]

thank you for your interesting, when we use the drill rod ,core barrel and other parts, all will be greased before connect each other

[@否定先生]

建议在室内拍摄避免光线影响，增加各配件介绍环节，配合剪辑使用旁白。

[@jinshidrilltech1903]

谢谢指教！

[@manojoraonoraon3181]

Good nice

[@志猛卢]

唐山金石👍

[@jinshidrilltech1903]

谢谢小卢☺，希望你在国外一切安好啊！

[@samallcott5171]

Nq??!!!!

[@jinshidrilltech1903]

Yes, the double tube core barrels are NQ