GOST ATK 24.200.02-90 Blind Flange Manufacturer | Russian Standard Blind Flange

Overview

GOST ATK 24.200.02-90 Blind Flange is a solid flange without a center bore, manufactured in accordance with the Russian technical standard ATK 24.200.02-90, which is part of the GOST system governed by Rosstandart.

It is designed to seal the end of pipelines, valves, and pressure equipment, providing complete system isolation for maintenance, pressure testing, or future expansion.
This standard is widely used in Russia, CIS countries, Eastern Europe, and Central Asia.

Product Description

Key Features & Functions

• Solid Blind Design (No Bore)
  Completely blocks flow and ensures safe isolation of the piping system.

• Compliance with GOST / ATK Standards
  Dimensions, bolt holes, bolt circle, and thickness strictly follow ATK 24.200.02-90 requirements.

• High Mechanical Strength
  Suitable for medium to high pressure pipeline applications.

• Wide Material Selection

• Carbon Steel: 20#, 09Г2С

• Stainless Steel: 12Х18Н10Т, 08Х18Н10

• Other materials available upon request

• Multiple Pressure Ratings
  Common pressure classes: PN6 / PN10 / PN16 / PN25 / PN40

Applications

GOST ATK 24.200.02-90 Blind Flanges are widely used in:

• Oil & gas pipelines

• Petrochemical and chemical plants

• Power generation facilities

• Water supply and district heating systems

• Industrial piping systems

• Fire protection and utility pipelines

Installation Process

1. Inspection

• Verify flange size, PN rating, material, and sealing surface.

• Ensure the flange face is clean and undamaged.

2. Gasket Installation

• Select a suitable gasket (rubber, graphite, spiral wound, or metal gasket).

• Ensure proper centering between flanges.

3. Bolt Alignment

• Align bolt holes of the blind flange with the mating flange.

4. Bolt Tightening

• Tighten bolts gradually using a cross (diagonal) pattern.

• Apply uniform torque to prevent leakage.

5. Pressure Testing (If Required)

• Recheck bolt tightness before pressure testing the system.

Flange production process

Factory Showcase

FAQ

Q1: What is a GOST ATK 24.200.02-90 Blind Flange used for?

A: It is used to close the end of pipelines or equipment connections, providing full isolation for maintenance, testing, or future expansion.

Q2: Is this blind flange interchangeable with ANSI or EN standards?

A: No. GOST, ANSI, and EN standards differ in dimensions, bolt patterns, and pressure ratings. Direct interchange is not recommended.

Q3: What gasket types are suitable for GOST blind flanges?

A: Common gasket options include rubber, graphite, spiral wound, and metal gaskets, selected according to pressure, temperature, and media.

Q4: What materials are commonly used for this standard?

A: Carbon steel grades such as 20# and 09Г2С, and stainless steel grades like 12Х18Н10Т are commonly used.

Q5: Are GOST blind flanges suitable for fire protection systems?

A: Yes. They are often used in fire protection and utility piping systems, especially in regions adopting GOST standards.

Q6: Can surface treatment or coating be customized?

A: Yes. Available options include black finish, anti-rust oil, zinc coating, epoxy coating, or project-specific surface treatments.

Q7: Can non-standard sizes or thicknesses be supplied?

A: Yes. Custom dimensions, materials, and coatings are available for project-based requirements.