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API 5CT 4 1/2" non-upset tubing
13YRSSinotai Petroleum Equipment Co., Ltd
Q195, Q235, Q345, X42, X52, X60, X70 SSAW steel pipe for heating, piles and construction
8YRS1985 Group
api 5l gr.b carbon steel seamless pipe seamless carbon steel pipe
6YRSTianjin Youfa International Trade Co Ltd
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