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3lpe Coated Erw Pipe - astm a53 gr.b st20 st37 st52 cold draw seamless steel pipes - RISE STEEL -Api 5l Gr.B Steel Pipe Importer - high frequency s355jh seam spiral welded steel pipe mill line - RISE STEEL .Erw Black Steel Pipe - 2 Inch Schedule 40 Astm A53 Aisi 4130 Alloy Seamless Steel Pipe - RISE STEEL , carbon steel , aluminum, copper, chrome, anodized aluminum, silicon wafer, etc. gb3087 grade 20 asme b36 10m Steel products Carbon is located in Cangzhou, Hebei Province, China, which close to Beijing and Tianjin. +86-317-6886816 / 2049276 [email protected]

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