Hot dip Galvanized.
Quenched and Tempered.
Crosby products meet or exceed all requirements of ASME B30.26 including identification, ductility, design factor, proof load and temperature requirements.
Importantly, Crosby products meet other critical performance requirements including fatigue life, impact properties and material traceability, not addressed by ASME B30.26.
Note: these swivels are positioning devices and are not intended to rotate under load.