Carbide Drills are recommended for cleaning straight, ferrous tubes plugged solidly with deposits.
Codes are as follows:
GTC-231D for 19,1mm (3/4") ID;
GTC-229 for 22,2 mm (7/8") ID;
PTB-100 for 25,4 mm (1") ID;
Note: All drills run 10% oversize. For example, GTC-231D drill is 21 mm OD).
Specifications
Tube Size Range (Inch ID): 3/4 - 1 Tube Size Range (mm ID): 19,1 - 25,4 Packaging (PCS/Unit): 1 Tube Type: Smooth bore Application: Completly clogged with scale deposits
