33170 - Steel pipe & Tubes (not made in steel mills)
3317014 - - Carbon steel line pipe, 16 inch outside diameter or less
3317015 - - Carbon steel line pipe, >16 inch outside diameter
3317019 - - Carbon steel oil country goods
3317021 - - Seamless carbon steel pressure tubing
3317022 - - Welded carbon steel pressure tubing
3317023 - - Seamless carbon steel mechanical tubing
3317024 - - Welded carbon steel mechanical tubing
3317027 - - Carbon steel structural pipe & Tubes
3317029 - - Miscellaneous carbon steel pipe & Tubes, incl Standard pipe
3317032 - - Alloy steel oil country goods & Line pipe
3317043 - - Alloy steel pressure tubing
3317045 - - Alloy steel mechanical tubing
3317048 - - Miscellaneous alloy steel pipe & Tubes, incl Standard & Structural
3317061 - - Seamless stainless steel pressure tubing
3317062 - - Welded stainless steel pressure tubing
3317063 - - Seamless stainless steel mechanical tubing
3317064 - - Welded stainless steel mechanical tubing
3317065 - - Other Stainless steel pipe & Tube
3317XX0 - - Steel pipe & Tubes, made in steel mills not Producing semifinished shapes or Plate
3317XX2 - - Steel pipe & Tube (Miscellaneous - Speciality)