[Contact: WSP Holdings Limited Compass Investor Relations Ms. Judy Zhu, IR Director Ms. Elaine Ketchmere, Partner Phone: +86-510-8536-0401 Phone: +1-310-528-3031 (Los Angeles) E-mail: info@wsphl.com E-mail: eketchmere@compass-ir.com http://www.wsphl.com WSP Holdings Announces Update on Going Private Transaction WUXI, China, August 15, 2013 — WSP Holdings Limited (NYSE: WH) (“WSP Holdings” or the “Company”), a Chinese manufacturer of API (American Petroleum Institute) and] [EXECUTION COPY AMENDMENT TO THE AGREEMENT AND PLAN OF MERGER Amendment This AMENDMENT TO THE AGREEMENT AND PLAN OF MERGER, dated as of 15 August 2013 (this “ 石油钢管集团有限公司 Parent ), an exempted company with limited liability incorporated under the laws of the Cayman Islands (“ 石油钢管集团有限公司 “Merger Sub Company ), an exempted company with limited liability incorporated under the] [WSP HOLDINGS LIMITED No. 38 Zhujiang Road Form 20-F x Form 40-F o o o WSP HOLDINGS LIMITED Longhua Piao]