GOST Flange Standards: Complete Guide for Russian and CIS Markets
GOST standards are mandatory for pipeline projects in Russia, Kazakhstan, Belarus, and CIS countries.
Key GOST Flange Standards
- GOST 12820-80: Steel flat welded flanges (weld neck)
- GOST 12821-80: Steel loose welded flanges (threaded)
- GOST 12822-80: Steel blind flanges
GOST Pressure Ratings (PN System)
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)
GOST Material Grades
Stainless: 08Х18Н10 (304), 03Х17Н14М3 (316L), 12Х18Н10Т (321)
Carbon: Ст20, 09Г2С (low-temp), 17Г1С (pipeline)
CIS Market Applications
- Oil & Gas: Gazprom, Transneft, Lukoil projects
- Petrochemical: Sibur, Tatneft refineries
- District Heating: Municipal systems (PN16-PN25)
- Water Infrastructure and Power Generation
Certification Requirements
GOST-R or EAC certificate, material certificates, dimensional reports, pressure test certificates required.
GOST flange inquiry: Email: 1007788887@qq.com | WhatsApp: +86-18658777855
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