This article is Part 1 of a 5-part blog series that will cover what professional riggers should consider when performing an in-depth alloy chain sling inspection. Today, we’ll discuss the effect of twisting and bending. Consider that chain is evaluated by applying loads in a pure […]


              The Association of Crane and Rigging Professionals (ACRP) recently held its annual meeting in Milwaukee, Wisconsin. The ACRP is a nonprofit association whose mission is dedicated to improving crane operations and rigging activities in all industries. This is accomplished through educational opportunities to its members and the public. Many […]


As provided by the NACM Technical Committee on May 2, 2011 The NACM  (National Association of Chain Manufacturers) has been asked to provide its position on the need to add additional tagging to tie-down assemblies due to some apparent confusion in Canada. The Canadian National Safety Code for Motor Vehicles released Standard 10 – Cargo […]


National Association of Chain Manufacturers (NACM), representing domestic manufacturers of welded and weldless chain since 1933, has conducted D/d testing on alloy chain. D/d is the ratio between the curvature taken by the sling D, and the diameter of the component chain d. NACM alloy chain manufacturers supplied Grade 100: 9/32”, 3/8” and ½” and […]