Subheading 730711: Cast Iron; Cast Fittings, of Non-malleable Cast Iron
Subheading 730719: Iron or Steel; Cast Fittings, other than of Non-malleable Cast Iro … etc.
Subheading 730721: Steel, Stainless; Tube or Pipe Fittings, Flanges, of Stainless Ste … etc.
Subheading 730722: Steel, Stainless; Tube or Pipe Fittings, Threaded Elbows, Bends an … etc.
Subheading 730723: Steel, Stainless; Tube or Pipe Fittings, Butt Welding Fittings
Subheading 730729: Steel, Stainless; Tube or Pipe Fittings, N.E.C. in Item No. 7307.2
Subheading 730791: Iron or Steel; Tube or Pipe Fittings, Flanges, other than Stainles … etc.
Subheading 730792: Iron or Steel; Tube or Pipe Fittings, Threaded Elbows, Bends and S … etc.
Subheading 730793: Iron or Steel; Tube or Pipe Fittings, Butt Welding Fittings, other … etc.
Subheading 730799: Iron or Steel; Tube or Pipe Fittings, N.E.C. in Item No. 7307.9, o … etc.