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GOST Flanges

Handling critical pipelines under varying pressures becomes risky when flange standards mismatch with Russian system designs. Our GOST flanges match exact specifications for PN6 to PN160 ranges, preventing sealing failures and misalignment.

Standard Specification

GOST 12820-80 (Flat Face), GOST 12821-80 (Weld Neck), GOST 12822-80 (Loose)

Pressure Rating

PN6 to PN160 (1-25 MPa) [GOST 26349-84]

Material

Carbon Steel (GOST 1050-88), Stainless Steel (GOST 5632-72), Titanium (GOST 19807-91)

Nominal Size

DN10 to DN1600 (½” to 64″) [GOST 28338-89]

Flange Type

01 (Flat), 02 (Raised), 03 (Weld Neck), 04 (Loose), 05 (Threaded)
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Product Description

Using unmatched flanges often causes frequent downtime, gasket leaks, or severe structural issues. Our manufacturing aligns material grades, surface finishes, and dimensions according to GOST norms for reliable long-term performance.

Facing Type

Type A (Smooth), Type B (Serrated), Type E (RTJ) [GOST 12815-80]

Dimensions

GOST 12815-80 Tables (Thickness, OD, Hub dimensions)

Bolt Circle Diameter

GOST 12815-80 Table 1 (e.g., DN100 PN16: 210mm)

Number & Size of Bolt Holes

GOST 12815-80 Table 2 (e.g., DN100 PN16: 8×M16)

Surface Finish

3.2μm Ra (GOST 2789-73), Groove finish Rz≤40μm (GOST 25142-82)

Corrosion Resistance

GOST 9.306-85 (coatings), GOST 9.908-85 (stainless grades)

Temperature Rating

-70°C to +600°C (GOST 356-80)

Material Certification

GOST 16523-97 (steel), GOST 24297-2013 (material verification)

Gasket Compatibility

GOST 15180-86 (paronite), GOST 481-80 (rubber)

Coating/Plating

GOST 9.306-85 (zinc), GOST 9.301-86 (anodizing)

Manufacturing Method

GOST 8479-70 (forging), GOST 977-88 (castings), GOST 19903-74 (sheet steel)

Technical Advantages

Process connections demand strict compliance with system pressure ratings, material codes, and surface finishes. Our GOST flanges meet each factor by using carbon steel, stainless steel, or titanium according to GOST standards. 
 Surface roughness and facing profiles ensure proper gasket compression and long service life in hostile environments. Wide dimensional range from DN10 to DN1600 fits diverse project needs without local modifications.

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Industry Applications

Oil and Gas Plants

Connects high-pressure flow lines securely under thermal cycling and corrosive environments. 

Petrochemical Refineries

Joins complex systems without mismatches in bolt patterns or sealing faces. 

Heavy Equipment Manufacturing

Assembles hydraulic and pneumatic systems using forged or cast GOST flanges.

Thermal Power Stations

Secures water, steam, and fuel pipelines operating across wide temperature ranges. 

Shipbuilding and Marine Systems

Maintains structural integrity against shock loads, salt spray, and pressure fluctuations.

Chemical Processing Units

Supports high-pressure chemical transfer without risks of gasket blowouts or joint failures. 

GOST Flanges

Piping Joints for Demanding Industrial Projects

Pipeline failures due to improper flange fittings can stop entire plant operations. We produce GOST flanges from verified steels that resist corrosion, fatigue, and high pressure. 
 All gasket compatibility, bolt hole dimensions, and coating requirements match Russian and CIS regional expectations. Buyers avoid rework or late-stage design issues by sourcing from manufacturers with full GOST certification. 

GOST Flanges

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Having Doubts? Our FAQ

Check all our Frequently Asked Question

Are GOST flanges compatible with non-Russian pipeline systems?

GOST flanges follow unique dimensions, bolt patterns, and pressure ratings compared to DIN, ANSI, or JIS standards. Mixing GOST with other systems often leads to sealing failures or bolt misfits. Our team provides exact drawings to verify compatibility before supply. 

What materials do you use for different pressure classes of GOST flanges?

We manufacture PN6 to PN160 flanges using carbon steel GOST 1050-88, stainless GOST 5632-72, or titanium GOST 19807-91. Material selection depends on service medium, pressure level, and corrosion risk. Buyers can choose based on project-specific fluid, temperature, and environment. 

Can you provide GOST flanges with special coatings for offshore or corrosive environments?

Yes, we offer coatings like zinc plating (GOST 9.306-85) and anodizing (GOST 9.301-86) for additional corrosion resistance. Surface treatments comply strictly with Russian standards for durability in aggressive zones. Coating selection depends on site salt exposure, chemicals, or humidity levels. 

How do you verify the dimensional accuracy and pressure class of GOST flanges?

Each flange batch passes dimensional checks as per GOST 12815-80 tables and pressure testing if required. We provide dimensional inspection reports and material certificates like GOST 24297-2013. Buyers get assurance that flanges match project needs without rework risks. 

What gasket types are recommended with your GOST flanges?

We suggest paronite gaskets (GOST 15180-86) or rubber gaskets (GOST 481-80) based on operating conditions. Facing types like smooth, serrated, or RTJ profiles allow the correct gasket compression without leakage. We help buyers match facing finish and gasket grade correctly. 

How does Frigate handle custom GOST flange manufacturing for project-specific requirements?
  • Frigate manufactures GOST flanges strictly based on client drawings and technical specifications 
  • Our engineering team validates all dimensions against applicable GOST standards before production 
  • We support reverse engineering for existing or non-standard flange requirements 
  • Every custom order undergoes pre-production design verification to avoid site mismatches 
What production capabilities does Frigate offer for large or urgent GOST flange orders?
  • Frigate operates integrated forging and machining facilities for faster turnaround 
  • We handle both small batches and high-volume industrial orders efficiently 
  • Priority production slots are available for shutdowns and critical project timelines 
  • Clients receive committed delivery schedules with real-time production updates 
Can Frigate supply complete GOST flange assemblies with all required components?
  • Frigate supplies complete flange packages including bolts, nuts, washers, and gaskets 
  • All components are matched to GOST specifications for proper fit and sealing performance 
  • Pre-assembled or kitted solutions reduce on-site installation errors 
  • Single-source supply ensures consistency across all connection elements 
How does Frigate support international clients working with mixed flange standards?
  • Frigate provides technical guidance for projects involving GOST and other standards (DIN/ANSI) 
  • Our team shares detailed drawings for compatibility checks before manufacturing 
  • We help identify required adapters or design adjustments where direct matching is not possible 
  • Export-ready documentation and compliance reports are included with every shipment 
What quality control and inspection systems does Frigate follow for GOST flanges?
  • Frigate follows strict raw material traceability with certified sourcing 
  • In-process and final inspections are conducted as per GOST dimensional standards 
  • Third-party inspection (TPI) support is available upon client request 
  • Each shipment includes complete documentation: MTCs, inspection reports, and compliance certificates 
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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ã…¤

Other Locations

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  • India
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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Other Locations

  • Bangalore
  • Chennai
  • Coimbatore
  • Germany
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Become a Supplier

GENERAL ENQUIRIES

  • +91 96778 64606
  • manufacture@frigate.ai
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GOST Flanges

Need reliable wires and cables for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

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GOST Flanges

Need reliable Machining for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

Get Latest Price

Get Price Form