Lipehelo tse amanang le nahaflangemaemo a tloaelehileng a "GB/T9124-2010 Technical Conditions for Steel Pipe Flanges":

3.2.1 Bakeng sa li-flange tse nang le likhatello tsa mabitso tsa PN2.5-PN16 Class150, tšepe e tlaase ea carbon, le li-forging tsa tšepe tse sa hloekang tsa austenitic li lumelloa ho ba lihlopha tsa Sehlopha sa I (bothata bo lekoa ka sengoathoana).

3.2.2 Haeba maemo a latelang a finyelloa, ho qhekella ha li-flange ho tla kopana le litlhoko tsa Sehlopha sa III kapa ka holimo ho forgings (sampling tensile test and ultrasonic tested one by one):

1. Forgings bakeng sa li-flange tse nang le likhatello tsa mabitso ≥PN100 le ≥Class600;

2. Lisebelisoa tsa tšepe tsa Chromium-molybdenum bakeng sa li-flange tse nang le likhatello tsa mabitso ≥PN63 le ≥Class300;

3. Ferrite forgings bakeng sa flanges ka khatello ea lebitso ≥ PN25 le Sehlopha sa ≥ 300 le mocheso oa ho sebetsa ≤ -20 ° C.

3.2.3 Mekhabiso e meng ea flange e tlameha ho ikamahanya le litlhokahalo tsa Kereiti ea II kapa ka holimo ho forgings (tlhahlobo ea matheba le ho taka).