Russian GOST Standard Galvanized Steel Blind Flange High Pressure for Oil and Gas Media

• Customization: Available
• Standard: ANSI, DIN, GB, JIS, GOST, BSW, GOST Atk 24.200.02.90
• Type: Welding Flange
• Model NO.: GOST
• Material: Stainless Steel,Carbon Steel,Alloy Steel
• Structure: Flanges
• Connection: Welding
• Sealing Surface: BS
• Manufacturing Way: Forging
• Pressure: Pn6 Pn10 Pn16 Pn25 Pn40, 5K, 10K, 16K, 20K, 30K
• Technics: Forged
• Product Name: Blind Flange
• Model Number: BS4504 Blind105
• Certificate: ISO, CE, PED, BV, Ks
• Usage: Joining Pipe Lines
• Transport Package: Wooden Box
• Specification: DN10-DN2000
• Trademark: Maitolead
• Origin: Hebei, China
• HS Code: 7307210000
• Production Capacity: 1000000piece/Year
• Package Size: 48.50cm * 32.00cm * 18.00cm
• Package Gross Weight: 100.000kg

Product Description

GOST ATK 24.200.02-90 Blind Flange

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.

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.

Installation Process

Installation Process
Inspection

Verify flange size, PN rating, material, and sealing surface.
Ensure the flange face is clean and undamaged.
Gasket Installation

Select a suitable gasket (rubber, graphite, spiral wound, or metal gasket).
Ensure proper centering between flanges.
Bolt Alignment

Align bolt holes of the blind flange with the mating flange.
Bolt Tightening

Tighten bolts gradually using a cross (diagonal) pattern.
Apply uniform torque to prevent leakage.
Pressure Testing (If Required)

Recheck bolt tightness before pressure testing the system.

Model Number:	GOST BLIND FLANGE
Standard:	GOST33259-11/12821-80 PN6 PN10 PN16 PN25 PN40 PN63  WELDING NECK FLANGE
Product name:	GOST BLIND FLANGE
Material:	Q235 /A105/ ST37/S235JR/ CT20 /SS400/16MN/SS321/SS304/SS316/S235/P245GH/P250/P91/904L
Pressure:	PN6/PN10/PN16/PN25/PN40/ON63
Technics:	Forged
Connection:	Welding
Packing:	Plywood cases\wooden Pallets
Certificate:	ISO, CE, PED, BV, KS
MOQ:	10pcs
Usage:	Joining Pipe Lines

ABOUT US

The maitolead group's flange and pipe fittings factory was established in 2017, we are a professional manufacturer focusing on flanges, pipe fittings, and elbows.made of different materials (stainlesssteel, carbon steel, alloy steel, etc.. We are a physical manufacturer integrating customization, processing, production, sales and export trade. we have a stock of over 2000 tons and produce and sell over 20 tons of spot goods daily. The company's products are exported to more than 30 countries and regions including Europe, America, and Asia.

we are main production equipment of the company includes forging hammers, ring-rolling machine, lathes, drillers, pushing machine, presses, shot blasting machine etc. Materials available are carbon steel, stainless steel and alloy steel. Products are manufactured in accordance with international standards such as ANSI,DIN, EN1092, JIS, BS, GOST standards or with customers special requirement and design. we owns certificates of CE, PED, ISO, BV, KS. in addition, Maitolead Group gives test certificate, which are compliant to EN 10204 3, 1B and contains physical and chemical testing.

Available Standards
ANSI / ASME B16.5 (Class 150 / 300 / 600 / 900)
EN 1092-1 (PN6 / PN10 / PN16 / PN25 / PN40)
DIN / BS / JIS / GOST (available upon request)

Flange Types
Weld Neck (WN) / Slip-On (SO) / Blind (BL) / Threaded (TH) / Socket Weld (SW) / Lap Joint (LJ) / Plate Flange (PL)

Surface Treatment
Anti-rust oil / Black paint / Zinc plated / Hot-dip galvanized (optional)

Our products are widely used in petroleum, chemical, machinery, electric power, metallurgy, and coal mine construction, and have earned high praise and trust from customers worldwide.

Customization Support

We provide material customization, size customization, drawing-based non-standard flange fabrication, and packaging customization (carton / pallet / wooden case with OEM labeling).

                   10+

                           years of

manufacturing experience

.                                  50000

           tons of exports per

                        year

              30+

            project partners

PRODUCT INFORMATION

Flange,also called flange disc or flange. The flange is a part connected between the shaft and the shaft, which is used for the connection between the pipe ends; It is also useful in the flange on the import and export of the equipment for the connection between two devices, such as the reducer flange. Flange connection or flange joint refers to a detachable connection which is connected by flanges, gaskets and bolts as a group of combined sealing structures. 

Because the flange has good comprehensive performance, it is widely used in chemical industry, construction, water supply,drainage, petroleum, light and heavy industry, refrigeration, health, water heating, fire, power, aerospace, shipbuilding and other basic projects.

Product Parameter
Standards	ANSI	ANSI B16.5 ASME B16.47 series A/B
	DIN	DIN2635
	EN	EN1092-1:2002
	JIS	JIS B2220-2004, KS D3576, KS B6216 KS B1511-2007 JIS B2261; JIS B8210
	BS	BS4504 BS10 Table D/E
Material	ANSI	SS ANSI 304(L); ANSI 316(L); Duplex Steel ASTM A182; S31803; S32205
	DIN	CS RST37.2;S235JR SS 304/304L,316/316L
	EN	CS RST37.2;S235JR;C22.8SS 304/304L,316/316L
	JIS	SS400,SF440 SS 304/304L, 316/316L
	BS	CSRST37.2;S235JR;C22.8;Q235SS 304/304L,316/316
Pressure	ANSI	Class 150, 300, 600, 900, 1500, 2500lbs
	DIN	PN6,PN10,PN16,PN25,PN40,PN64,PN100
	EN	PN6,PN10,PN16,PN25,PN40,PN64,PN100
	JIS	1K,2K,5K,10K,16K,20K,30K,40K
	BS	PN6,PN10,PN16,PN25,PN40,PN64,PN100
Size	ANSI	1/2″ – 48″
	DIN	DN15-DN1200
	EN	DN15-DN1200
	JIS	15A-1500A
	BS	DN15-DN1200
Packaging	Loose package; Packaged in bundles(2Ton Max); bundled pipes with two slings at the both end for easy loading and discharging; End with Plastic caps; wooden cases.
Test	Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing , X-ray Test.
Application	Light and heavy industry, refrigeration, health, water heating, fire, power, aerospace, shipbuilding and other basic projects.

Main production process

PRODUCTION LINE

Product Inspection

PACKING&SHIPING

FAQ

Q1: What is EN 1092-1 Type 01 Plate Flange?
A: It is a flat plate flange manufactured according to EN 1092-1, designed to be welded to steel pipes and used for bolted flange connections in piping systems.

 
Q2: What is the difference between Type 01 and Type 11 flanges?
A:

Type 01: Flat plate flange, welded to the pipe by fillet weld, cost-effective and widely used.
Type 11: Weld neck flange, with a tapered hub, better stress distribution and suitable for higher pressure and temperature applications.
 
Q3: What pressure ratings are available for Type 01 Plate Flanges?
A: Common pressure ratings include PN6, PN10, PN16, PN25, and PN40, depending on size and material.

 
Q4: Can Type 01 Plate Flanges be used in fire protection systems?
A: Yes. They are commonly used in fire protection piping systems, especially for water-based fire fighting installations.

 
Q5: Are EN 1092-1 Type 01 flanges interchangeable with ANSI flanges?
A: No. EN and ANSI standards differ in bolt circle diameter, number of bolt holes, and pressure ratings. Interchangeability must be carefully checked.

 
Q6: What gasket types are suitable for this flange?
A: Flat gaskets such as rubber, EPDM, graphite, or spiral wound gaskets can be used, depending on pressure, temperature, and media.

 
Q7: Can special coatings or surface treatments be provided?
A: Yes. Available options include black finish, anti-rust oil, zinc coating, epoxy coating, or customized surface treatments as required.

 
Q8: Is customization available for non-standard sizes or thicknesses?
A: Yes. Customized dimensions, materials, drilling patterns, and coatings can be supplied for project-based requirements.