American Petroleum Institute

Certificate of Authority to Use Official Monogram

License No. 2B-0051

The right to use the Officila Monogram on manufactured products under the conditions specified in the official publications of the American Petroleum Institute entitled API Spec Q1 and Specification 2B.

Effective Date:        June 1, 1998

Expiration Date:     June 1, 2001

American Petroleum Institute

Certificate of Authority to Use Official Monogram

License No. 5L-0360

The right to use the Officila Monogram on manufactured products under the conditions specified in the official publications of the American Petroleum Institute entitled API Spec Q1 and Specification 5L.

Effective Date:        June 1, 1998

Expiration Date:     June 1, 2001

Det Norske Veritas

Quality System Certificate

Certificate No.QSC-6942

Quality System Standard: ISO 9001:1994 Compliant

valid for the following product and service range:

Development and Manufacture of Large Pipes and Structural Tubulars

Place and date of issue:      Rotterdam, May 21st, 1998

Valid Until:     May 21st, 2001

Original Certification Date:      May 21st, 1998

Accredited by the RvA