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Manufacturers Steel Pipe Price China Manufacturers steel pipe manufacturing, US $ 450 - 700 / Ton, ASTM, JIS, API, ASTM A106-2006, ASTM A53-2007, ASTM A179-1990, JIS G3461-2005, JIS G3454-2007, JIS G3455-2005, API 5L, ST35-ST52, A53-A369, 10#-45#, ST37, A53(A,B), A106(B,C), A179-C, 10#, 20#, 45#, 2