Izinhlinzeko ezifanele kuzwelonkei-flangestandard “GB/T9124-2010 Technical Conditions for Steel Pipe Flanges”:

3.2.1 Kuma-flange anengcindezi encane ye-PN2.5-PN16 Class150, insimbi ye-carbon steel ephansi, kanye ne-austenitic stainless steel forgings kuvunyelwe ukuba ama-Forging Ekilasi I (ukuqina kuhlolwa isiqeshana ngasinye).

3.2.2 Uma lezi zimo ezilandelayo kuhlangatshezwana nazo, ama-forging ama-flanges azohlangabezana nezimfuneko ze-Class III noma ngaphezulu kwe-forging (isampula yokuhlolwa kwe-tensile nokuhlolwa kwe-ultrasonic ngayinye ngayinye):

1. Ama-Forging ama-flange anezingcindezi ezivamile ≥PN100 kanye no-≥Class600;

2. Insimbi ye-Chromium-molybdenum forgings yama-flange anengcindezi encane ≥PN63 kanye ≥Class300;

3. Ama-ferrite forgings ama-flange anengcindezi encane ≥ PN25 neClass ≥ 300 kanye nezinga lokushisa lokusebenza ≤ -20°C.

3.2.3 Amanye ama-flange forgings kufanele ahambisane nezidingo zeBanga lesi-II noma ngaphezulu kokufogiwe (ukuhlola indawo kanye nokudweba).