73042 -Casing, conduits, and drill pipes used for drilling oil or natural gas: HS code chinese tariffs

73042 -Casing, conduits, and drill pipes used for drilling oil or natural gas: HS code chinese tariffs

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730422 Stainless steel seamless drill pipe for drilling oil or natural gas Stainless steel seamless drill pipe for drilling oil or natural gas

730423 Other seamless drill pipes made of steel for drilling oil or natural gas Other seamless drill pipes made of steel for drilling oil or natural gas

73042400 --Stainless steel seamless casing and conduit for drilling oil and gas --Stainless steel seamless casing and conduit for drilling oil and gas

730429 Seamless casing and conduit for drilling oil or natural gas using other steel materials Seamless casing and conduit for drilling oil or natural gas using other steel materials