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ASTM A36 Equivalent Q235 ERW Round Carbon Steel Pipe, JIS G3101 Ss400 Steel Tube Price, Find Details and Price about Steel Tube Price Black Iron Pipe from ASTM A36 Equivalent Q235 ERW Round Carbon Steel Pipe, JIS G3101 Ss400 Steel Tube Price - TIANJIN SHENGTENG INTERNATIONAL TRADING CO., LTD.