Acrow prop is devided into many different classifications according to the acrow prop sizes and appearance. Acrow props sizes main included: Φ 400, Φ 580, Φ 600, Φ 609, Φ 630, Φ 800 and so on. Acrow props of different sizes also play different roles. When using this product on construction, every detail is very important. In most time, security is based on caring the details. But as long as you are careless, it may caused a big accident happened. The above is I know about acrow props and I hope it’s useful and helpful.