PRODUCTS  
       DCDMA AND METRIC SERIE DRILL RODS
   

Steel drill rods for conventional drilling are manufactured in both DCDMA and Metric standards in the following sizes; EW, AW, BW, BWY, NW, NWY, HW, 33, and 50 .

 

Skilled workmanship and close inspection of raw materials and finished products result in a high strength and uniform drill rod. Rod couplings, which are subject to heavy loads, are manufactured with special care from heat treated high quality alloy steel for increased strength and resistance to wear. Conventional drill rods are always furnished complete with a coupling. Spare or extra couplings are available.

 

Conventional drill rods and couplings can be furnished with left hand threads on special order only. Left hand rods are generally used when it is necessary to fish out core barrels , rods or casings, which are stuck in a hole and where recovery can only be accomplished by backing off the line of tools.

When measuring drill rods, the length of the rod includes the body of coupling but does not include the projecting pin thread. Thus, a 3.0 m. rod combined with the coupling measures 3.0 m. when made up into a string or line of rods.
 

DCDMA SERIE DRILL RODS
SIZE OF DRILL ROD EW AW BW NW
Specifications Outside Diameter 35,0 mm 43,8 mm 54,1 mm 66,8 mm
I.D. of Parallel Wall Rod 23,8 mm 31,7 mm 38,7 mm 51,5 mm
I.D. of Upset Wall Rod     44,3 mm 57,0 mm
Bore of Coupling 11,2 mm 16,0 mm 19,0 mm 35,0 mm
No. of threads per In. 3 3 3 3
 
METRIC SERIE DRILL RODS
LENGTH 0,5 m 1,0 m 1,50 m 3,0 m
Size of Drill Rod Wt. Lbs. Wt. Kg. Wt. Lbs. Wt. Kg. Wt. Lbs. Wt. Kg. Wt. Lbs. Wt. Kg.
33 mm - Parallel Wall             23,37 10,60
42 mm - Parallel Wall             28,89 13,10
50 mm - Parallel Wall             48,07 21,80
60 mm - Upset Wall             56,45 25,60
 

METRIC SERIE DRILL RODS
SIZE OF DRILL ROD 33 mm 42 mm 50 mm 60 mm
Specifications Outside Diameter 33,50 mm 42,00 mm 50,00 mm 60,00 mm
I.D. of Parallel Wall Rod 24,10 mm 32,50 mm 37,50 mm  
I.D. of Upset Wall Rod       48,00 mm
Bore of Coupling 15,00 22,00 mm 22,00 mm 25,00 mm
No. of threads per In. 4 4 3 4
 

NOTE : HW drill rods are manufactured upon request.Y series drill rods have the same O.D dimensions ; only the threads are tapered.