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Seamless Steel Pipe A53 Gr. B/X42/X52/X65/ X70 Pls1 Psl2 with 3lpe 3PE Bare Coating Seamless Steel Pipe, Find Details and Price about Carbon Steel Pipe A106 Steel Pipe from Seamless Steel Pipe A53 Gr. B/X42/X52/X65/ X70 Pls1 Psl2 with 3lpe 3PE Bare Coating Seamless Steel Pipe - Tianjin Boer King Steel Import and Export Co., Ltd.