Reverse Circulation Drill Rods

Increase productivity and reduce your consumables costs with Harlsan RC drill pipe.

Harlsan Reverse Circulation (RC) Drill Rods

Our reverse circulation drill rods and drill pipe consist of European hardened 4140 alloy steel tool joints with heavy-duty seamless drill pipe and high tensile API 5CT rated wear-resistant Inner Tubes.

Drawing on our years of experience in the design and manufacture of tough and wear-resistant RC drill rods, every aspect of material and production management is optimized.

The result is premium quality reverse circulation drill pipes that keep your RC drill rig efficiently producing day after day.

Australia’s Toughest RC Drill Pipe


You can be sure that Harlsan RC Drill Pipe will still be going strong when others have worn out.

Harlsan 4½” drill rods have been independently certified at the Class 1 pressure vessel rating (AS1210–2010) for weld quality.

RC drill pipe or rods using high specification austenitic stainless steel for down-hole surveying are also available.

RC Inner Tubes

Harlsan reverse circulation inner tubes for RC Drilling feature material and design advances to increase wear resistance and extend drill string life. To extend component life all inner tube components are manufactured from hardened alloy steels.

The focus on wear resistance means your RC drill rig is drilling for longer with lower drilling consumable cost rates. Additionally, inner tube couplings are engineered to elevate coupling life cycles beyond that of standard designs.

RC Drill Rod Product Brochure

Download the Harlsan Reverse Circulation Product brochure for a complete overview of the features and benefits that our equipment will bring to your drill rig.

Harlsan RC Drill Rod Brochure.pdf (541kb)


“We at Red Rock Drilling have used a number of suppliers of RC drill rods and can without hesitation state that Harlsan Industries supply the best RC rods for price, durability and timely delivery on the market.”

Henry Taitt, Red Rock Drilling

RC Drill Rods & Inner Tubes Specifications

Tool Joint Spanner Flats

Rods available with or without spanner flats. Two or four flats as required.

RC Drill Rods Length & Size

Standard lengths from 1 to 6m in:

  1. 3″
  2. 3 ½”
  3. 4″
  4. 4 ½”
  5. 75mm & 78mm

RC Drill Pipe Thread Types

The most popular threads we support:

  1. Remet
  2. Metzke
  3. RRE
  4. Drillstar
  5. LW
  6. TS
  7. & other threads available

Robot Welding Technology

Independently tested & certified to exceed welding standard AS3992

O-rings or Urethane Seals

Harlsan RC Inner Tubes come with a choice of Urethane or O-rings sealing options.

Other Rods – Blast Hole

We manufacture RAB, Cubex & API Rods as well as rods to your requirements.

Australian Made Toughness

All Rods feature hardened European 4140 alloy steel tool joints.

The INLOK Drill Rod Range


Any driller who has used a sledgehammer to manually remove a collapsed Inner Tube from an RC drill rod or pipe will know how unsafe it can be. The whole procedure is inefficient and involves injury risk from the associated manual handling.

The Harlsan RC Drilling INLOK™ product range provides a safe and controlled solution to these problems.

RC Drill Pipe Ordering Information


From Africa through to Asia, Eastern Europe through to the UK, and Canada through to South America. We can supply you with robust and efficient RC drills rods.

For pricing, immediate supply or customised orders call us on +61 8 9021 1288.

Get your engineered drilling components and consumable items on time, on budget and on track with Harlsan’s manufacturing services. Call us now or request a quote.