1. Lọwọlọwọ awọn iṣedede flange mẹrin wa ni Ilu China, eyiti o jẹ:
(1) National Flange boṣewa GB/T9112 ~ 9124-2000;
(2) Kemikali ile ise flange boṣewa HG20592-20635-1997
(3) Mechanical ile ise flange bošewa JB / T74 ~ 86.2-1994;
(4) Iwọn flange fun ile-iṣẹ petrochemical SH3406-1996
Mu boṣewa orilẹ-ede bi apẹẹrẹ, ṣe alaye yiyan awọn flanges.Flange boṣewa orilẹ-ede ti pin si awọn eto pataki meji: eto Yuroopu ati eto Amẹrika.Awọn igara ipin ti awọn flanges eto Yuroopu pẹlu: PN0.25, PN0.6, PN1.0, PN1.6, PN2.5, PN4.0, PN6.3, PN10.0, ati PN16.0MPa;Awọn titẹ ipin ti awọn flanges eto Amẹrika pẹlu PN2.0, PN5.0, PN11.0, PN15.0, PN26.0, ati PN42.OMPa
2. Awọn ipilẹ fun yiyan flanges
(1) Awọn ohun-ini ti alabọde gbigbe, pẹlu alabọde gbogbogbo, alabọde pataki, alabọde majele, flammable ati alabọde bugbamu;
(2) Da lori awọn aye ti alabọde, titẹ iṣẹ, ati iwọn otutu ti n ṣiṣẹ, nigbati a ba pinnu alabọde naa, a ti pinnu titẹ orukọ PN ti flange ti o da lori iwọn otutu iṣẹ ati titẹ ti alabọde.
(3) Ṣe ipinnu ọna asopọ ati fọọmu dada lilẹ laarin awọn flanges ati awọn paipu ti o da lori ipo lilo ati awọn ipo asopọ.
(4) Ṣe ipinnu awọn pato flange ti o da lori nkan asopọ.
Akoko ifiweranṣẹ: Kínní-28-2024