I-ASTM A179 ihlanganisa ubukhulu obuncane bodonga, amashubhu ensimbi anekhabhoni ephansi adonswa ngaphandle komthungo we-tubular, isishintshi sokushisa, ama-condensers, nezinye izinsiza zokudlulisa ukushisa.I-ASTM A 179 yensimbi engenamthungo inikezwa futhi ikhiqizwa ngendlela ebandayo yokudweba.Ukwakheka kwamakhemikhali kuqukethe i-carbon, i-manganese, i-phosphorus, nesibabule.Kudingeka ukuhlolwa: ukuhlolwa kokuqina, ukuhlolwa kokucaba, ukuhlolwa kokuvutha, ukuhlolwa kwe-flange, nokuhlolwa kwe-hydrostatic.