Subheading 731511: Chain; Articulated Link, Roller, of Iron or Steel
Subheading 731512: Chain; Articulated Link, (other than Roller), of Iron or Steel
Subheading 731519: Chain; Articulated Link Parts, of Iron or Steel
Subheading 731520: Chain; Skid, Articulated Link Chain and Parts thereof, of Iron or … etc.
Subheading 731581: Chain; Stud-link Chain, of Iron or Steel
Subheading 731582: Chain; Welded Link Chain, of Iron or Steel
Subheading 731589: Chain; N.E.C. in Heading No. 7315, of Iron or Steel
Subheading 731590: Chain; Parts N.E.C. in Heading No. 7315, of Iron or Steel