Shaosong Chen (1), Yi Lu (2), Wei Cui (1), Xiaohu Zhang (3), Guirong Wang (3), Minxu Lu (4) 1.Beijing Ankocorr Technology Co., Ltd., Beijing, China, 2.The Ohio State University, Columbus, Ohio, USA 3.Beijing Safetech Pipeline Co., Ltd., Beijing, China, 4.University of Science and Technology Beijing, China Email: chenshs@ankopipe.com