I-ASTM A179 igubungela ubungqingqwa obuncinane bodonga, iityhubhu zentsimbi ezitsalwa ngokubanda eziphantsi kwekhabhoni ezitsalwa ngekhabhoni yetubula, isitshintshi sobushushu, iicondensers, kunye nezinye iinkonzo zokuhambisa ubushushu.ingenamthungo ASTM A 179 ityhubhu yentsimbi ibonelelwa kwaye iveliswe ngendlela ebandayo yokuzoba.Ukwakhiwa kweekhemikhali kuqulethe i-carbon, i-manganese, i-phosphorus kunye nesulfure.Uvavanyo olufunekayo: uvavanyo lokuqina, uvavanyo lokucaba, uvavanyo lokuvutha, uvavanyo lwe-flange, kunye novavanyo lwe-hydrostatic.