The same item of barbell, there are soft and hard, knurled is also various. If there is a big difference, search for the equipment specifications required by the respective competitions. If the difference is small, you have to compare the brand and the brand specifically. This thing cannot be directly compared by category. Even the poles of the same brand in different periods may be different.

In general, weightlifting barbells are more elastic and have smoother bearings. For powerlifting, the soft bar may be more comfortable to start with a deadlift, and the hard bar may be more comfortable to squat. The soft rod is also harder, and the hard rod is also softer. How does the body feel vary from person to person. For example, if you squat 80 kg, the difference between soft and hard rods is not big, but if you squat and pull 300 kg, the equipment may still be good or bad. For example, if the bar is too soft, the barbell keeps shaking after you squat out of the bar, or you are not used to the inertial jitter caused by the elasticity. When lifting weights, for example, you can make full use of the elasticity of the barbell. Quite creating conditions. If you lift weights, you can't use hard shots. It is recommended to follow the function of station B. Hansu has done a comparison of various world-renowned brands of barbells.