GOST 33259-2015 is the current Russian standard for steel flanges, replacing older GOST 12820/12821 specs. The Type 01 Slip-On (SO) flange is designed to slide onto the pipe and be welded around the circumference. It is widely used across Eastern Europe and Central Asia for its reliability in diverse temperatures. These flanges are categorized by "Rows" (dimensions) and "Performances" (facing types), offering a robust solution for oil, gas, and heating systems requiring strict adherence to interstate standards.
Technical Attributes
Standard: GOST 33259-2015
Flange Type: Type 01 Slip-On Plate
Pressure PN: PN 1 to PN 250
Size DN: DN 10 to DN 2400
Material Carbon: Steel 20 or St3sp
Material Alloy: 09G2S Low Temp
Material Stainless: 12X18H10T
Facing Execution: Performance A through M
Execution B: Connecting Face RF
Manufacturing: Forged or Plate Cut
Connection: Double Fillet Weld
Temperature: -70C to 600C grade dependent
Dimension Row: Row 1 or Row 2
Yield Strength: 245 MPa Steel 20
Tensile Strength: 410 MPa Steel 20
Hardness: Max 156 HBW Steel 20
Certification: EAC GOST-R
Primary Industry: Oil Gas and Power
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
