Most of the deformation of metal.
So choose a good seller when buying, at least the wall should be1.5mm.
In addition, aluminum alloy is not good, it will collapse after a few hits, and alloy steel is not good either. Although the hardness is slightly higher, the pipe wall is generally thin, which is the garbage flowing out of the factory. It is best to buy round steel for stretching, and 2.0mm pipe wall is the best.
We were born in the 1980s. When I was a child, the steel pipes we used in group fights never broke. So I like the baseball bat stretched from round steel now, which is a necessary good thing for self-defense at home.
Speaking of this kind of steel, first of all, the hardness absolutely kills all kinds of baseball bats, even if the price is expensive, it will cost 300 yuan anyway. I bought it just to look at it, and I didn't dare to try bricks. After all, this price is embossed, saying that it is a baseball bat, but it is actually more like a handicraft.
Furthermore, round steel should be stretched and formed. I guess it may be annealed steel. The hardness of annealed steel can also reach above 190, and the highest hardness of aluminum alloy is only 150. Generally, baseball bats are made of ordinary aluminum alloy, and the hardness may be around 100 at most.
So good or bad is clear at a glance.