Chitoliro chopanda chitsulo cha A53 ndi chitoliro chachitsulo chaku America chomwe chimagawidwa m'mitundu iwiri: A53A ndi A53B. Pakati pawo, A53-A ndi yofanana ndi chitsulo cha 10 # cha China, A53-B ndi chofanana ndi chitsulo cha 20 # cha China, ndi A53-F. ndikufanana ndi zinthu zaku China q235.Mapaipi achitsulo a ASTM A53 ndi oyenera kunyamula zakumwa ndi mpweya mumafuta amafuta, gasi, ndi mafakitale amafuta.