Circular steel product cold bent test apparatus

A circular steel product cold bent test apparatus includes a left oil cylinder, a right oil cylinder, a left support, a right support, a support shaft, an oil adding cylinder, an upper ram and a shaft sleeve, wherein the shaft sleeve is sleeved on the support shaft, a plurality of annular round grooves in vertical arrangement to the shaft center line of the shaft sleeve are provided on the external surface of the shaft sleeve, and the interior diameter of the shaft sleeve is in clearance fit with the external diameter of the shaft sleeve. During the test, the steel product sample is place in the annular round groove of the shaft sleeve, can simultaneously accommodate a plurality of circular steel products to perform experiment, and has high experiment efficiency; the steel product sample is placed in various annular round grooves, and has fixed position, and eliminates the potential safety hazard of the skid steel product sample; the annular apparatus can rotate along with the steel product sample during the