730711 Tube or Pipe Fittings, Of nonmalleable cast iron
730719 Other Tube or Pipe Fittings, of Cast Iron
730721 Flanges of Stainless Steel
730722 Threaded elbows, bends and sleeves, of Stainless Steel
730723 Butt welding fittings of Stainless Steel
730729 Other Tube or Pipe Fittings, of Stainless Steel
730791 Flanges of Iron or Steel
730792 Threaded elbows, bends and sleeves, of Iron or Steel
730793 Butt welding fittings, of Iron or Steel
730799 Other Tube or Pipe Fittings, of Iron or Steel
