Pehea e koho ai i kahi flange

1. Aia i kēia manawa ʻehā mau flange standard ma Kina, ʻo ia hoʻi:

(1) National flange standard GB/T9112~9124-2000;

(2) HG20592-20635-1997 maʻamau flange ʻoihana kemika

(3) Mechanical oihana flange maʻamau JB/T74~86.2-1994;

(4) ʻO ke kūlana flange no ka ʻoihana petrochemical SH3406-1996

E lawe ana i ka hae aupuni ma ke ano la'ana, e wehewehe i ke koho ana o na flanges. Hoʻokaʻawale ʻia ka flange maʻamau i ʻelua ʻōnaehana nui: ka ʻōnaehana ʻEulopa a me ka ʻōnaehana ʻAmelika. ʻO nā kaomi inoa o nā flanges ʻōnaehana ʻEulopa: PN0.25, PN0.6, PN1.0, PN1.6, PN2.5, PN4.0, PN6.3, PN10.0, a me PN16.0MPa; ʻO nā kaomi inoa o nā flanges ʻōnaehana ʻAmelika e komo pū me PN2.0, PN5.0, PN11.0, PN15.0, PN26.0, a me PN42.OMPa

2. ʻO ke kumu no ke koho ʻana i nā flanges

(1) ʻO nā waiwai o ka mea lawe, me ke ʻano maʻamau, ke ʻano kūikawā, ke ʻano mea ʻawaʻawa, ke ʻano wela a me ka pahū;

(2) Ma muli o nā palena o ka mīkini, ke kaomi hana, a me ka mahana hana, i ka wā i hoʻoholo ʻia ai ke ʻano, ua hoʻoholo ʻia ka PN nominal pressure o ka flange ma muli o ka mahana hana a me ke kaomi o ka medium.

(3) E hoʻoholo i ke ala pili a me ka hoʻopaʻa ʻana i ka ʻili ma waena o nā flanges a me nā paipu e pili ana i ka wahi hoʻohana a me nā kūlana pili.

(4) E hoʻoholo i nā kikoʻī flange ma muli o ka mea pili.