Description
Our GOST blind flanges are manufactured strictly in line with GOST standards, featuring a solid disc design that provides reliable sealing for pipe ends, equipment outlets, or pipeline branches. This structure ensures excellent pressure resistance and leak-tight performance, effectively preventing media leakage and external contamination. With precise machining, excellent structural stability and strong adaptability, they are ideal for bulk orders and customized requirements in Russian and CIS low-to-high pressure industrial pipe systems.
1. Product Specifications
Category
Options & Details
Standard
GOST 12820, GOST 12821, GOST 12822 (PN 0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.3 MPa)
Material
Carbon Steel (St3sp, St3ps, 20G), Stainless Steel (08X18H10T, 12X18H10T), Alloy Steel (12X1MF, 15XM)
Nominal Diameter (DN)
DN 10 - DN 300 (standard); Custom sizes for special pipe configurations
Pressure Rating (PN)
PN 0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.3 MPa (varies by material and thickness)
Sealing Face Type
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), Male-Female Face (MF)
Surface Treatment
Hot-Dip Galvanized (HDG), Electro-Galvanized (EG), Anti-Rust Oil Coating, Pickling & Passivation
Certifications
ISO 9001, SGS, BV, GOST, DIN
2. Application Range
Oil & Gas Industry: Russian oilfield pipeline terminals, natural gas storage tank outlets, Siberian energy project pipeline sealing, wellhead equipment end caps
Petrochemical & Chemical: CIS chemical reactor outlets, solvent storage tank sealing, intermediate pipeline shut-off, corrosion-resistant media system end caps
Power Generation: Russian thermal power plant boiler auxiliary pipe sealing, steam pipeline branches, cooling water system end caps, hydropower station auxiliary system sealing
Marine & Shipbuilding: Baltic and Black Sea shipyard hull pipeline terminals, marine engine cooling system sealing, offshore platform water supply pipeline end caps
General Industry: CIS factory water treatment equipment outlets, HVAC system pipeline shut-off, food processing equipment end caps, hydraulic system sealing
3. Core Advantages
Strict compliance with GOST standards, ensuring interchangeability with Russian and CIS low-to-high pressure pipe systems and flange connections
Precision CNC machining for uniform dimensions and tight sealing, minimizing leakage risks
Diversified material and pressure rating options to adapt to high-temperature, high-pressure, and corrosive environments
Solid disc structure with high-pressure resistance, suitable for various media scenarios including gas, liquid and steam, ensuring long-term sealing reliability
Factory-direct supply with bulk inventory, supporting fast delivery and customized labeling.
- Flange
Production Capacity:
Not informed
Delivery Timeframe:
Within 30 Days
Incoterms:
CFR - Cost and Freight
CIF - Cost, Insurance and Freight
CIP - Carriage and Insurance Paid to
CPT - Carriage Paid to
DAF - Delivered At Frontier
DDP - Delivered Duty Paid
DDU - Delivered Duty Unpaid
DEQ - Delivered Ex Quay
DES - Delivered Ex Ship
EXW - Ex Works
FAS - Free Along Ship
FCA - Free Carrier
FOB - Free on Board
Packaging Details:
Not informed
More about
HEBEI DIDLINK INDUSTRY CO., LTD
50-100
Employees
10M - 50M
Sales volume (USD)
100%
% Export sales
Year
Established
Business type
- Industry / Manufacturer
- Importer / Trading Company
- Distributor / Wholesaler
Keywords
- pipe fittings
- flange
- steel sheet
- wire mesh
Contact and location
-
Amy ********
-
+86 1********
-
石家庄 / 河北省 | China