Drill Rods & Couplings
Drill Rods
Drill Rod Specifications - "W" Series
| Size of Drill Rod | EW | AW | BW | NW | AWJ | BWJ | NWJ |
| Outside Diameter | 1-3/8″ | 1-3/4″ | 2-1/8″ | 2-5/8″ | 1-3/4″ | 2-1/8″ | 2-5/8″ |
| Wall Thickness | 7/32″ | 1/4″ | 3/16″ | 3/16″ | 3/16″ | 3/16″ | 3/16″ |
| Bore of Coupling/Pin | 7/16″ | 5/8″ | 3/4″ | 1-3/8″ | 5/8″ | 3/4″ | 1-1/8″ |
| No. Threads Per Inch | 3 | 3 | 3 | 3 | 5 | 5 | 4 |
Drill Rod Specifications - Old Series
| Size of Drill Rod | E | A | B | N |
| Outside Diameter | 1-5/16″ | 1-5/8″ | 1-7/8″ | 2-3/8″ |
| Wall Thickness | 1/4″ | 1/4″ | 5/16″ | 3/16″ |
| Bore of Coupling | 7/16″ | 9/16″ | 5/8″ | 1″ |
| No. Threads Per Inch | 3 | 3 | 5 | 4 |
Drill Rods & Couplings
In keeping with the high standard of quality expected from a Roschen Drill product, our drill rods and couplings are no exception. All drill rod products are manufactured from a Cold Drawn, high carbon steel tubing which is equal to or exceeds the minimum tensile strength required by the DCDMA standards. Use of this high quality steel assures a product that will withstand drilling and driving under the most severe conditions. There is 100% inspection of all threads during the manufacture of drill rod and drill rod couplings. As required, all thread specifications on drill rod and drill rod couplings meet the thread standards set by DCDMA and will therefore interchange with products manufactured by other DCDMA members.
Drill rod couplings are made of AISI 4140 alloy steel and are heat treated to assure durability. Drill rod may be purchased in stock sizes of 1 ft., 2ft., 5ft., and 10ft. Many other lengths are available to meet specific drilling needs.
Best regards,
Phiger Leo
Direct Line: 0086-137-6419 5009
WeChat/WhatsApp:: +86-137-6419 5009
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ROSCHEN@ INC.
ROSCHEN@ GROUP LIMITED
ROBERT ROSCHEN@ LIMITED
ROSCHEN@ HOLDINGS LIMITED
HEFEI ROSCHEN@ TOOL CO., LTD.
ROSCHEN@ GEOLOGICAL TOOL CO.,LTD.
SHANGHAI ROSCHEN@ INTERNATIONAL CO., LTD.
ROSCHEN@ GEOLOGICAL INSTRUMENTS CO., LTD.
EMAIL: roschen@roschen.com ; roschen@roschen.net
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