A na-emepụta ọkwa nke ASTM A105 na-enweghị isi na-enweghị nchịka nke carbon steel. ASTM A10 na - emepụta ihe na kemịkal nke nickel, Chromium, Molybum, ọla kọpa, na vanadium. Enyemaka ndị a dabara na ijikọ akara piping dị iche iche na ụlọ ọrụ mmanụ na mmanụ.