BS ISO 4778:2019

This document specifies the requirements, methods of rating and testing of single, double, three and four leg welded chain slings of grade 8 using components such as sling chains according to ISOÂÂ3076together with links according to ISOÂÂ16798, hooks according to ISOÂÂ7597and forged components according to ISOÂÂ8539. NOTEÂÂ1 For special lifting purposes not covered by this document, additionally intermediate links can be used, for example to connect components to each other having different working load limit.The range of nominal diameter, dn, covered by this document is from 4ÂÂmm to 45ÂÂmm.Chain slings according to this document are for use in the temperature range –40°C to +400°C according to ISOÂÂ3056. NOTEÂÂ2 Concerning the use and maintenance of chain slings of gradeÂÂ8, see ISOÂÂ3056 .Chain slings according to this document comply with the general conditions of acceptance of ISOÂÂ1834and are used for symmetrically distributed loads only. NOTEÂÂ3 For rating of chain slings with asymmetrically distributed loads, see ISOÂÂ3056 .This document does not apply to mechanically joined chain slings. NOTEÂÂ4 For mechanically joined chain slings, see ISOÂÂ7593 .