Abubuwan da suka dace a cikin ƙasaflangeDaidaitaccen “GB/T9124-2010 Sharuɗɗan Fasaha don Flanges Bututun Karfe”:

3.2.1 Domin flanges tare da maras muhimmanci matsa lamba na PN2.5-PN16 Class150, low carbon karfe, kuma austenitic bakin karfe forgings an yarda su zama Class I forgings (da taurin da aka gwada yanki da yanki).

3.2.2 Idan an cika waɗannan sharuɗɗa masu zuwa, ƙirƙira don flanges za su dace da buƙatun Class III ko sama da ƙirƙira (nau'in gwajin tensile da gwajin ultrasonic ɗaya bayan ɗaya):

1. Forgings don flanges tare da matsananciyar ƙima ≥PN100 da ≥Class600;

2. Chromium-molybdenum karfe forgings ga flanges tare da maras muhimmanci matsa lamba ≥PN63 da ≥Class300;

3. Ferrite forgings ga flanges tare da maras muhimmanci matsa lamba ≥ PN25 da Class ≥ 300 da kuma aiki zafin jiki ≤ -20 ° C.

3.2.3 Sauran jabun flange ya kamata su bi buƙatun don ƙirƙira na Grade II ko sama (duba wuri da zane).