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ASTM A106/A53 Gr. a/B/C Prime Seamless Carbon Steel Pipe High Quanlity, Find Details and Price about API 5L A106 B Seamless Tube Seamless Alloy Steel Pipe from ASTM A106/A53 Gr. a/B/C Prime Seamless Carbon Steel Pipe High Quanlity - TIANCHENG METAL MATERIAL(TIANJIN) CO., LTD.