Thin Wall Wireline Core Drill Rods: Bigger Core Through the Same Hole

As mineral exploration pushes deeper and into smaller hole sizes, recovering more core through the same hole has become a direct driver of drilling economics. The thin wall wireline core drill rods of CGE Group (Wuxi) Drilling Tools Co., Ltd. — a state-owned manufacturer with 68 years of history — are supporting a growing number of deep-hole and slim-hole programs.

A bigger core through the same hole.  

Wireline coring retrieves the inner tube with an overshot on a wireline cable — no tripping of the drill string. Thin wall rods reduce the kerf, so the same hole diameter yields a larger core. The range covers BTW, NTW and HTW, all built to the DCDMA international standard for worldwide interchangeability with core barrels, casing and bits:

Profunditas fabricandi, a ferro ad filum.  

Vermes ex ZT950 (resistentia ad fluxum 950 MPa) et 30CrMnSiA (≥ 835 MPa) ferro alligato fortissimo facti sunt, cum iuncturis Q-filiformibus conicis, extremis forgiatis et temperatis, et rectitudine vermis circa 0.4 mm/m. Fabrica lineas productionis pro soldatura per frictionem, tubis petrolei et induramento filorum operatur. Omne ferrum ab officinis ferri notissimis provenit, per analysin metallographicam et examen compositionis chymicae comprobatum; producta filiformia omnino inspiciuntur, cum indice exemplorum productorum finalium supra 30%.

Fabricator publicus ab anno 1958.  

Fundata in 1958 et anno 1964 nuncupata Fabrica Instrumentorum Perforatoriorum Wuxi Departmentus Geologiae, hodie est filia directa China Geological Equipment Group sub SINOMACH, occupans fere 80 000 metra quadrata in Zona Developmentis Oeconomicae Huishan Wuxi. Habet 81 patentia productorum et agnoscitur ut Auctoritas Nationalis Technologica Alta. Anno 2011, studium suum de baculis perforatorii corici ad lineam ferream fortissimis, pars magni operis nationalis «Undecimi Quinquennii», praemium Progressus Scientiae et Technologiae Nationalis reportavit et late applicatum est in exploratione foraminum profundorum. Ab anno 2009 usque ad 2010, societatis quoque co-ordinavit formulam et emendationem normarum industrialium instrumentorum perforatoriorum geologicorum.

Nuntii recentes.  

I In August 2026, a batch of Q-series drill rods featuring a double-end upset thin-wall structure, together with supporting tools, was shipped to Kazakhstan for deep-exploration projects in Central Asian mining fields. The TW series (NTW / NTWA / NTWH, HTW / HTWA / HTWH) is available in lengths from 1 m to 3 m, with OEM/ODM customization on request.

Serving the new round of national mineral exploration programs and global exploration markets, the company will continue to rely on its own factory's manufacturing capability and full-process quality control to deliver reliable, fully matched wireline coring tools. Visit the TW series product page on our website for detailed specifications, or contact us for spec sheets and sample orders.