Nā mea pili i ka lāhuiflangemaʻamau "GB/T9124-2010 Kūlana Kūikawā no nā Flanges Pipe Steel":

3.2.1 No ka flanges me ka nominal kaomi o PN2.5-PN16 Class150, haʻahaʻa kalapona kila, a me austenitic kuhiliʻole forgings ua aeia e lilo Class I forgings (ka paakiki i ho'āʻo 'āpana ma ka apana).

3.2.2 Inā hoʻokō ʻia kēia mau ʻano, e hoʻokō nā forgings no nā flanges i nā koi o ka Class III a i ʻole forgings ma luna aʻe (sampling tensile inspection and ultrasonic testing one by one):

1. Forgings no nā flanges me nā kaomi inoa ≥PN100 a me ≥Class600;

2. Chromium-molybdenum kila forgings no nā flanges me ka nominal kaomi ≥PN63 a me ≥Class300;

3. Ferrite forgings no nā flanges me ka nominal pressure ≥ PN25 a me ka Papa ≥ 300 a me ka mahana hana ≤ -20 ° C.

3.2.3 Pono e hoʻokō nā mea hoʻoheheʻe flange ʻē aʻe i nā koi no ka hoʻoheheʻe ʻana o ka Papa II a i ʻole ma luna (ka nānā ʻana a me ke kaha kiʻi).