ISO 6971:1982

Welded steel type cranked link drag chains and chain wheels

Lays down dimensions, tolerances, measuring loads and minimum breaking loads, together with the tooth gap forms and rim profiles of the associated chain wheels for these chains suitable for the conveying of bulk materials and related applications. The chain is designed to operate with the closed end of each link forward for maximum scraping action against the material to be conveyed. Five types of attachments are given. The chain dimensions ensure complete interchangeability of individual links of chain.