GOST 33259-2015 12X18N10T Stainless steel Flange,SS321 Flanges
GOST 33259-2015. Flanges for valves, fittings and pipelines for pressure to PN 250. Design, dimensions and general technical requirements.
Prepared on the basis of GOST R 54432-2011, instead of GOST 12815-80, GOST 12816-80, GOST 12817-80, GOST 12818-80, GOST 12819-80, GOST 12820-80, GOST 12821-80, GOST 12822-80 (By order of the Federal Agency for Technical Regulation and Metrology dated May 26, 2015 GOST R 54432-2011 was canceled from April 1, 2017).
This standard takes into account the main regulatory provisions of the following international standards: – ISO 7005-1: 2011 “Pipeline flanges. Part 1. Steel flanges for industrial and general service piping systems (NEQ)– ISO 7005-2: 1988, Metal flanges. Part 2. Cast iron flanges “(” Metallic flanges-Part 2: Cast iron flanges “, NEQ).
GOST 33259-2015 applies to connecting flanges of pipeline fittings (hereinafter referred to as fittings), fittings and pipelines, as well as connecting flanges of machines, equipment, instruments, branch pipes, apparatuses and tanks for nominal pressure up to PN 250 and establishes the design and dimensions of steel and cast iron flanges, determines the types of flanges, types of forms of sealing surfaces, establishes technical requirements for manufacturing, marking, testing and control.
Download GOST 33259-2015 in PDF
Depending on the purpose of the pipeline and the working media transported through it, flanges are made of steels of various grades, including corrosion-resistant ones:
GOST 33259 Flanges are available in below types
12X18N10T also known as 12KH18N10T 12Х18Н10T,which is equivalent grade as TP321 under ASTM material ,It is a titanium stabilized chromium nickel austenitic stainless steel with corrosion resistance similar to 304/304L.
12X18N10T is highly resistant to oxidation & corrosion and it possesses good creep strength
| Grade : | 12KH18N10T ( 12Х18Н10Т ) ( Х18Н10Т ) |
| Substitute: | 08Х18Г8Н2Т, 10Х14Г14Н4Т, 12Х17Г9АН4, 08Х22Н6Т, 08Х17Т, 15Х25Т, 12Х18Н9Т |
| Classification : | Сryogenic structural steel |
| Equivalent grades: | SS321,AISI 321 |
| Type | UNS | JIS | EN/DIN | EN/BS | EN/NF | ISO | GB | GOST |
|---|---|---|---|---|---|---|---|---|
| 321 | S32100 | SUS321 | X6CrNiTi18-10 | 321S31 | X6CrNiTi18-10 | 15 | 0Cr18Ni10Ti |
12X18N10T |
Chemical composition in % for grade 12KH18N10T ( 12Х18Н10Т )
| C | Si | Mn | Ni | S | P | Cr | Cu | – |
| max 0.12 | max 0.8 | max 2 | 9 – 11 | max 0.02 | max 0.035 | 17 – 19 | max 0.3 | (5 С – 0.8) Ti, остальное Fe |
| Фланец стальной плоский приварной Dn100 PN10 тип 11 из нержавеющей стали | ||
| Фланец стальной плоский приварной Dn350 PN10 тип 11 из нержавеющей стали | ||
| Фланец стальной плоский приварной Dn400 PN10 тип 11 из нержавеющей стали | ||
| Фланец стальной плоский приварной Dn500 PN10 тип 11 из нержавеющей стали |
