This year Molong’s Φ88.9 N80E Tubing was test in the down hole to the extent of 5750 meters of Yingmai No.37 Well located in the Northern Talimu Basin in Xinjiang Autonomous Region. This test totally consists of loads and unloads for three times. During site test, the thread is kept perfect without any damage and galling. This successful test means Molong’s techniques on OCTG can match the rigid geological condition and deep well.