Exhibit 24.1**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2007, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Kenneth S. McCormick Kenneth S. McCormick  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Richard C. Seaver Richard C. Seaver  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Jerry S. Cox Jerry S. Cox  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Patrick T. Seaver Patrick T. Seaver  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ T. Don Stacy T. Don Stacy  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Lew O. Ward Lew O. Ward  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned, in his capacity as an officer of the Company, does herebyappoint CHRISTOPHER T. SEAVER as his true and lawful attorney, with full power of substitution andresubstitution, to execute in his name, place and stead, in his capacity as an officer of theCompany, said Annual Report and any and all amendments, supplements or appendices thereto and allinstruments necessary or incidental in connection therewith as said attorney shall deem necessaryor incidental in connection therewith and to file the same or cause the same to be filed with theCommission. Said attorney shall have full power and authority to do and perform in the name and onbehalf of the undersigned in any and all capacities, every act whatsoever necessary or desirable tobe done to the premises, as fully and to all intents and purposes as the undersigned might or coulddo in person, the undersigned hereby ratifying and approving the acts of said attorney.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Chris D. North Chris D. North  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director and officer of the Company, doeshereby appoint CHRIS D. NORTH as his true and lawful attorney, with full power of substitution andresubstitution, to execute in his name, place and stead, in his capacity as a director and officerof the Company, said Annual Report and any and all amendments, supplements or appendices theretoand all instruments necessary or incidental in connection therewith as said attorney shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Said attorney shall have full power and authority to do and perform in thename and on behalf of the undersigned in any and all capacities, every act whatsoever necessary ordesirable to be done to the premises, as fully and to all intents and purposes as the undersignedmight or could do in person, the undersigned hereby ratifying and approving the acts of saidattorney.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Christopher T. Seaver Christopher T. Seaver  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Roger Goodan Roger Goodan  
 

 
**POWER OF ATTORNEY**          WHEREAS, HYDRIL COMPANY, a Delaware corporation (the “Company”), intends to file with theSecurities and Exchange Commission (the “Commission”) under the Securities Exchange Act of 1934, asamended (the “Act”), an Annual Report on Form 10-K for the fiscal year ended December 31, 2006, asprescribed by the Commission pursuant to the Act and the rules and regulations of the Commissionpromulgated thereunder, with such amendments, supplements or appendices thereto as may be necessaryor appropriate, together with any and all exhibits and other documents having relation to saidAnnual Report;          NOW, THEREFORE, the undersigned in his capacity as a director or officer, or both, as the casemay be, of the Company, does hereby appoint CHRISTOPHER T. SEAVER and CHRIS D. NORTH, and each ofthem severally, as his true and lawful attorney or attorneys with power to act with or without theother, and with full power of substitution and resubstitution, to execute in his name, place andstead, in his capacity as a director or officer, or both, as the case may be, of the Company, saidAnnual Report and any and all amendments, supplements or appendices thereto and all instrumentsnecessary or incidental in connection therewith as said attorneys or either of them shall deemnecessary or incidental in connection therewith and to file the same or cause the same to be filedwith the Commission. Each of said attorneys shall have full power and authority to do and performin the name and on behalf of the undersigned in any and all capacities, every act whatsoevernecessary or desirable to be done to the premises, as fully and to all intents and purposes as theundersigned might or could do in person, the undersigned hereby ratifying and approving the acts ofsaid attorneys and each of them.          IN WITNESS WHEREOF, the undersigned has executed this instrument on this 26th day of February,2007.       /s/ Gordon T. Hall     Gordon T. Hall