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 · Web viewSmoking pipes (including pipe bowls) and cigar or cigarette holders, and parts thereof. pipes and hollow profiles, seamless, of iron (other than cast iron) or steel. 7304.31 7304.51 100 7304.51 900 7304.59 100 7304.59 900 7304.90 100 7304.90 900 - Line pipe of a kind used for oil or gas pipelines - Casing, tubing and drill pipe, of a - mofcom.gov.cnTranslate this pageAPI 5CTAPI 5L API 5CTAPI 5L Seamless casing pipe Casing Pup joint Seamless Carbon steel Pipe Seamless line Pipes.