Crane Products

/Crane Products

Crane Products

7 11, 2015

Crane Products

What is an Anti-two-block (or A2B) system? An anti-two-block system is used to prevent or warn the operator of a two-block condition on a crane. Two-blocking is the dangerous condition where the lower hook block is raised until it contacts any part of the boom tip hardware. The term comes from block and tackle terminology, [...]