The Combined Nomenclature (CN), v1:2019
7315 89 00: Chain of iron or steel (excl. articulated link chain, skid chain, stud-link chain, welded link chain and parts thereof; watch chains, necklace chains and the like, cutting and saw chain, skid chain, scraper chain for conveyors, toothed chain for textile machinery and the like, safety devices with chains for securing doors, and measuring chains)
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=ec3af576-673e-42d6-892f-12eb18291831