72.29 A change to heading 72.29 from any other heading, except from headings 72.27 through 72.28.
73.01-73.03 A change to headings 73.01 through 73.03 from any other chapter.
7304.10-7304.39 A change to subheadings 7304.10 through 7304.39 from any other chapter.
7304.41 7304.41.10 A change to Canadian tariff item 7304.41.10, U.S. tariff item 7304.41.10, Mexican tariff item 7304.41.02 or 7304.41.03 from subheading 7304.49 or from any other chapter.
7304.41 A change to subheading 7304.41 from any other chapter.
7304.49-7304.90 A change to subheadings 7304.49 through 7304.90 from any other chapter.
73.05-73.07 A change to headings 73.05 through 73.07 from any other chapter.
73.08 A change to heading 73.08 from any other heading, except for changes resulting from the following processes performed on angles, shapes, or sections of heading 72.16:
a) drilling, punching, notching, cutting, cambering, or sweeping, whether performed individually or in combination; b) adding attachments or weldments for composite construction; c) adding attachments for handling purposes; d) adding weldments, connectors or attachments to H-sections or I- sections; provided that the maximum dimension of the weldments, connectors, or attachments is not greater than the dimension between the inner surfaces of the flanges of the H-sections or I-sections e) painting, galvanizing, or otherwise coating; or f) adding a simple base plate without stiffening elements, individually or in combination with drilling, punching, notching, or cutting, to create an article suitable as a column.
73.09-73.11 A change to headings 73.09 through 73.11 from any other heading outside that group.
73.12-73.14 A change to headings 73.12 through 73.14 from any other heading, including another heading within that group.
7315.11-7315.12 A change to subheadings 7315.11 through 7315.12 from any other heading; or
A change to subheadings 7315.11 through 7315.12 from subheading 7315.19, whether or not there is also a change from any other heading, provided there is a regional value content of not less than:
a) 60% where the transaction value method is used, or b) 50% where the net cost method is used.
7315.19 A change to subheading 7315.19 from any other heading.