Explanatory notes
… inter alia : (1) Bricks of all shapes (parallelepiped, wedge shaped, cylindrical, semi-cylindrical, etc.), … flooring, walls, hearths, etc. The heading excludes tubing, piping (including runways in the form of half-cylinders) and … fittings of refractory materials ( heading 69.03 ). ° ° ° Subheading Explanatory Note. Subheading 6902.10 What has to …