GOST 12836-67 Steel Flanged Blind Plug
ГОСТ 12836-67 Заглушка Фланцевая Стальная for Legacy GOST Pipeline Systems
GOST 12836-67 steel flanged blind plug is a Russian standard pipeline component used to close the end of flanged piping systems, pressure vessel nozzles and industrial process lines.
The Russian product name is Заглушка фланцевая стальная ГОСТ 12836-67. It is also commonly described in English as a steel flanged blind plug, GOST blind flange plug or raised face steel flanged plug.
We manufacture and supply GOST 12836-67 steel flanged blind plugs according to customer-specified dimensions, project requirements, material grades and inspection requirements. These products are mainly used for legacy GOST pipeline projects, replacement parts, industrial maintenance and export projects requiring Russian standard flanged connections.
GOST 12836-67 products should be confirmed according to the purchaser’s project specification, existing pipeline standard, mating flange dimensions, pressure class and acceptance requirements.
Product Specifications
| Item | Description |
|---|---|
| Product Name | GOST 12836-67 Steel Flanged Blind Plug |
| Russian Name | Заглушка фланцевая стальная ГОСТ 12836-67 |
| Product Type | Steel flanged blind plug / blind flange plug / raised face flanged plug |
| Standard | GOST / ГОСТ 12836-67 |
| Pressure Range | Ru 1–40 kgf/cm² according to standard reference |
| Common Project Classes | PN10, PN16, PN25, PN40 |
| Non-Standard Pressure Class | PN63 / PN100 available according to customer drawing only |
| Nominal Diameter | According to GOST 12836-67 or customer drawing |
| Connection Type | Bolted flanged connection |
| Sealing Face | Raised face / connecting projection |
| Manufacturing Method | Forging, machining and drilling |
| Material | Carbon steel, low-temperature steel, stainless steel and alloy steel |
| Surface Treatment | Black, anti-rust oil, painted, galvanized or customized |
| Certificate | EN 10204 3.1 / 3.2 available upon request |
| Inspection | Chemical, mechanical, dimensional, visual, PMI and third-party inspection upon request |
Standard Overview
GOST 12836-67 specifies steel flanged blind plugs with a raised connecting face for use in bolted flange connections. These plugs are used to seal pipeline ends, isolate sections of a piping system and close pressure vessel nozzles.
The standard covers the basic requirements for:
- Nominal diameter
- Pressure rating
- Flanged connection dimensions
- Raised face design
- Plug thickness
- Bolt hole arrangement
- Material selection
- Manufacturing requirements
- Dimensional tolerances
For replacement projects, the plug should be checked against the existing mating flange, bolt circle, sealing face, pressure class and gasket arrangement.
Pressure Ratings
GOST 12836-67 is associated with Ru pressure classes up to Ru 40 kgf/cm² in standard references.
| Pressure Class | Approximate MPa Equivalent | Website Use |
|---|---|---|
| Ru 1 kgf/cm² | Approx. 0.1 MPa | Legacy low-pressure project |
| Ru 6 kgf/cm² | Approx. 0.6 MPa | Common GOST project requirement |
| Ru 10 kgf/cm² | Approx. 1.0 MPa | Common project class |
| Ru 16 kgf/cm² | Approx. 1.6 MPa | Common PN16 project class |
| Ru 25 kgf/cm² | Approx. 2.5 MPa | Medium-pressure pipeline |
| Ru 40 kgf/cm² | Approx. 4.0 MPa | Higher standard pressure class |
PN63 and PN100 blind plugs can be manufactured as non-standard products according to customer drawings, but they should not be presented as standard GOST 12836-67 pressure ratings unless confirmed by the project specification.
Available Materials
Material selection depends on working temperature, pressure class, fluid medium, corrosion condition and project specification.
| Material Group | Common Grade | Typical Use |
|---|---|---|
| Carbon Steel | Steel 20 / Сталь 20 | General pipeline systems, water, steam, oil products and non-aggressive media |
| Low-Temperature Steel | 09G2S / 09Г2С | Low-temperature service, outdoor pipeline systems and colder operating environments |
| Stainless Steel | 12Х18Н10Т | Corrosion-resistant service, chemical media and stainless pipeline systems |
| Stainless Steel | 08Х18Н10 | General stainless steel flanged plug applications |
| Alloy Steel | 12Х1МФ | High-temperature steam and power plant service |
| Alloy Steel | 15Х5М | Heat-resistant and refinery-related service |
Final material selection should be confirmed according to the medium, operating temperature, pressure rating, corrosion requirement and customer technical specification.
Manufacturing Process
GOST 12836-67 steel flanged blind plugs can be manufactured through controlled forging and machining processes.
Main production steps include:
- Steel billet or forged blank preparation
- Forging or blank cutting
- Heat treatment when required
- CNC machining
- Raised face machining
- Bolt hole drilling
- Thickness and outside diameter control
- Surface finishing
- Anti-corrosion treatment
- Final inspection and packing
Forged construction provides better strength and reliability for pressure pipeline systems compared with simple cut-plate blanks when project specifications require forged products.
Testing and Inspection
Each batch can be inspected according to customer requirements and project specifications.
Material Testing
Available material testing includes:
- Chemical composition analysis
- Mechanical property test
- PMI test upon request
- Material traceability review
Mechanical Testing
Mechanical testing may include:
- Tensile test
- Yield strength test
- Elongation test
- Hardness test
- Impact test when required by low-temperature service
Dimensional Inspection
Dimensional inspection can include:
- Outside diameter
- Thickness
- Raised face diameter
- Bolt circle diameter
- Bolt hole quantity and diameter
- Sealing face condition
- Overall height
- Surface condition
Optional Inspection
Optional inspection can be arranged upon request:
- Ultrasonic testing
- Magnetic particle testing
- Liquid penetrant testing
- Third-party inspection
- Final dimensional report
- Packing inspection
Certificates and Documents
Available documents include:
- EN 10204 3.1 Material Certificate
- EN 10204 3.2 Certificate upon request
- Chemical Composition Report
- Mechanical Test Report
- Heat Treatment Record when applicable
- PMI Report upon request
- Dimensional Inspection Report
- Surface Inspection Report
- Packing List
- Certificate of Origin
- Third-Party Inspection Report upon request
Applications
GOST 12836-67 steel flanged blind plugs are used for pipeline termination, maintenance isolation and pressure system closure in industrial projects.
Common applications include:
- Oil and gas pipelines
- Refinery systems
- Petrochemical process lines
- Power plant steam systems
- Pressure vessel nozzle closure
- Water treatment pipelines
- Industrial process piping
- Legacy Russian standard pipeline projects
- Replacement parts for existing GOST flanged connections
They are suitable for applications where a removable bolted closure is required at the end of a flanged pipeline or equipment nozzle.
Custom Manufacturing
We supply GOST 12836-67 steel flanged blind plugs according to standard dimensions or customer drawings.
| Required Information | Example |
|---|---|
| Standard | GOST 12836-67 |
| Russian Product Name | Заглушка фланцевая стальная |
| DN | DN50, DN100, DN150 |
| Pressure Class | Ru16 / PN16 |
| Material | Steel 20, 09G2S, 12Х18Н10Т |
| Quantity | Pieces |
| Surface Treatment | Black, painted, galvanized or anti-rust oil |
| Inspection | EN 10204 3.1, PMI, dimensional report |
| Drawing | PDF, DWG or technical sketch |
| Application | Pipeline end closure, vessel nozzle closure or replacement project |
Example designation:
Plug 50—16 GOST 12836
This indicates a steel flanged blind plug with DN50 and Ru16 / PN16 pressure class according to GOST 12836.
Important Project Note
GOST 12836-67 is a legacy Russian standard used in many existing pipeline systems and replacement projects. Before ordering, buyers should confirm whether the project requires GOST 12836-67 dimensions, another GOST flange standard, ATK standard, ASME blind flange, EN blind flange or a custom drawing.
For new pressure equipment projects, final acceptance should be confirmed by the engineering company, inspection authority and end-user specification.
Frequently Asked Questions
What is GOST 12836-67 steel flanged blind plug?
GOST 12836-67 steel flanged blind plug is a Russian standard steel pipeline component used to close the end of flanged piping systems, pressure vessel nozzles and industrial process lines.
What is the Russian name for GOST 12836-67 blind plug?
The Russian name is Заглушка фланцевая стальная ГОСТ 12836-67. It can also be described as a steel flanged plug or blind flange plug.
Is GOST 12836-67 the same as a blind flange?
It is similar in function to a blind flange because both are used to close the end of a flanged pipeline. However, GOST 12836-67 specifically refers to a steel flanged plug with a raised connecting face according to the Russian standard design.
What pressure ratings are covered by GOST 12836-67?
Standard references for GOST 12836-67 indicate pressure classes up to Ru 40 kgf/cm². Common project pressure classes include Ru10, Ru16, Ru25 and Ru40. PN63 and PN100 should be treated as custom or non-standard unless confirmed by the project drawing.
Can PN63 or PN100 blind plugs be supplied?
Yes. PN63 and PN100 blind plugs can be manufactured according to customer drawings, but they should be described as custom high-pressure blind plugs rather than standard GOST 12836-67 products.
What materials are available?
Available materials include Steel 20, 09G2S, 12Х18Н10Т, 08Х18Н10, 12Х1МФ and 15Х5М. Material selection depends on temperature, pressure, medium and corrosion requirements.
Can you supply EN 10204 3.1 certificate?
Yes. EN 10204 3.1 material certificate, chemical composition report, mechanical test report and dimensional inspection report can be supplied when required.
Can the plug be manufactured according to drawing?
Yes. We can manufacture steel flanged blind plugs according to GOST 12836-67 dimensions, customer drawings, existing sample dimensions or project-specific requirements.
Is GOST 12836-67 still used?
GOST 12836-67 is commonly used for legacy pipeline systems, replacement parts and projects that still specify old Russian standard dimensions. For new projects, buyers should confirm the applicable standard with the engineering company or end user.
Request a Quote
Send us your GOST 12836-67 steel flanged blind plug requirement.
Please include:
- Standard or drawing
- DN size
- Pressure class
- Material grade
- Quantity
- Surface treatment
- Certificate requirement
- Inspection requirement
- Application or working medium
- Delivery requirement
Our technical team will review your specification and provide a suitable quotation for GOST steel flanged blind plugs.
