AGREEMENTSchedule 13g Agreement • February 10th, 2006 • Hydril Co • Oil & gas field machinery & equipment
The undersigned hereby agree in writing pursuant to the provisions of Rule 13d-1(i)(1)(iii) promulgated under the Securities Exchange Act of 1934, as amended, that the Amendment No. 3 to Schedule 13G to which this Agreement is attached is filed on behalf of each of the undersigned.
