[AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13D (i) (ii) Each of them is responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making] [EQUITY COMMITMENT LETTER 21 February H.D.S. Investments LLC Room #405, Bldg C Wangzhuang Science & Technology Innovation Park, No. 4 Longshan Road, New District, Wuxi Jiangsu Province, People’s Republic of China Ladies and Gentlemen: Sponsor 石油钢管集团有限公司 Parent Merger Agreement Company 石油钢管集团有限公司 Merger Sub Merger This letter agreement sets forth the commitment of H.D.S. Investments LLC, a limited liability company incorporated] [VOTING AGREEMENT Agreement WSP OCTG GROUP Ltd. (WSP 石油钢管集团有限公司 ) Parent JM OCTG GROUP Ltd. (JM 石油钢管集团有限公司 ) Merger Sub Shareholder This VOTING AGREEMENT (this “ Company Merger Agreement Merger WHEREAS, Parent, Merger Sub and WSP Holdings Limited (the “ WHEREAS, the Shareholder, Parent and Merger Sub are executing this agreement concurrently with the execution of the Merger Agreement; Securities] [ROLLOVER AGREEMENT Agreement Parent 石油钢管集团有限公司 Merger Sub Company Rollover Shareholder Rollover Shareholders February 21, This ROLLOVER AGREEMENT (this “ Merger Agreement WHEREAS, Parent and Merger Sub have entered into an Agreement and Plan of Merger, dated as of the date hereof (as may be amended, supplemented or otherwise modified from time to time, the “ Schedule 1 Rollover Shares Schedule] [G98108 106 CUSIP No. 1 NAMES OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY). WSP OCTG GROUP LTD. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP]