Norme GOST sulle flange: Guida completa per i mercati di Russia e CSI
Gli standard GOST sono obbligatori per i progetti di condotte in Russia, Kazakistan, Bielorussia e nei Paesi della CSI.
Principali norme GOST sulle flange
- GOST 12820-80: Flange piane saldate in acciaio (collo di saldatura)
- GOST 12821-80: Flange saldate sciolte in acciaio (filettate)
- GOST 12822-80: Flange cieche in acciaio
Valori di pressione GOST (sistema PN)
PN1.0 (10 bar), PN1.6 (16 bar), PN2.5 (25 bar), PN4.0 (40 bar), PN6.3 (63 bar), PN10.0 (100 bar), PN16.0 (160 bar), PN20.0 (200 bar)
Gradi di materiale GOST
Inossidabile: 08Х18Н10 (304), 03Х17Н14М3 (316L), 12Х18Н10Т (321)
Carbonio: Ст20, 09Г2С (bassa temperatura), 17Г1С (conduttura)
Applicazioni del mercato CIS
- Petrolio e gas: Progetti di Gazprom, Transneft e Lukoil
- Petrolchimico: raffinerie Sibur e Tatneft
- Teleriscaldamento: Sistemi comunali (PN16-PN25)
- Infrastrutture idriche e generazione di energia
Requisiti di certificazione
Sono richiesti il certificato GOST-R o EAC, i certificati dei materiali, i rapporti dimensionali e i certificati delle prove di pressione.
Richiesta di flangia GOST: Email: 1007788887@qq.com | WhatsApp: +86-18658777855
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