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Help CenterDIN Alloy Steel Blind Flange Manufacturer | EN 1092-1 PN16 PN40 PN100 Blind Flanges for Europe
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DIN Alloy Steel Blind Flange | Export to Europe
Blind Flange – Industrial Flange Manufacturer & Supplier
Product Overview
Blind flanges (BL Flanges) are solid forged flanges used to seal the ends of pipelines, valves, pressure vessels, and piping systems. They are designed to stop flow, isolate sections of piping, and provide convenient access for maintenance, inspection, and future system expansion.
SHAANXI GOLD-STONE I/E CO., LTD. manufactures and exports high-quality alloy steel blind flanges in accordance with European, American, and international standards. Our products are widely used in power generation, petrochemical processing, oil & gas transmission, and industrial pipeline systems throughout Europe and global markets.
Key Features
· High-strength forged alloy steel construction
· Excellent pressure and temperature resistance
· Reliable leak-proof sealing performance
· Suitable for high-pressure pipeline systems
· Manufactured according to EN, ASME, and GB standards
· Available with complete material traceability
· Export packaging for international projects
Product Specifications
Product Information
Item |
Specification |
Product Name |
Blind Flange |
Type |
BL Flange |
Manufacturing Method |
Forged |
Function |
Pipeline End Closure & Isolation |
Application |
Industrial Piping & Pressure Systems |
Applicable Standards
European Standards
· EN 1092-1
· DIN Standard Flanges
American Standards
· ASME B16.5
· ASME B16.47
Chinese Standards
· GB/T 9115
· HG/T 20592
· HG/T 20615
Pressure Ratings
ASME Class Series
· Class 150
· Class 300
· Class 600
· Class 900
· Class 1500
· Class 2500
DIN / EN PN Series
· PN6
· PN10
· PN16
· PN25
· PN40
· PN63
· PN100
· PN160
Face Types
RF – Raised Face
The most commonly used sealing face for industrial piping systems.
FF – Flat Face
Suitable for low-pressure applications and cast equipment connections.
RTJ / RJ – Ring Type Joint
Designed for high-pressure and high-temperature services.
M/F – Male & Female
Provides enhanced sealing performance.
T/G – Tongue & Groove
Used in critical service applications requiring precise sealing.
Available Materials
Carbon Steel
· ASTM A105
· ASTM A350 LF2
· Q235B
· 20#
· 16Mn
Stainless Steel
· ASTM A182 F304
· ASTM A182 F304L
· ASTM A182 F316
· ASTM A182 F316L
· ASTM A182 F321
· ASTM A182 F904L
Alloy Steel
· ASTM A182 F11
· ASTM A182 F22
· ASTM A182 F5
· ASTM A182 F9
· ASTM A182 F91
Size Range
Standard |
Size Range |
NPS |
1/2" – 48" |
DN |
DN10 – DN1200 |
Custom dimensions are available upon request.
Applications
Oil & Gas Pipelines
Used for line isolation, maintenance access, and pipeline termination.
Petrochemical Plants
Suitable for high-temperature and high-pressure process systems.
Power Generation Facilities
Widely used in thermal power stations, combined-cycle plants, and energy infrastructure projects.
Water Treatment Systems
Used in industrial water, wastewater, and municipal utility applications.
Pressure Vessels & Process Equipment
Installed on tanks, reactors, heat exchangers, and pressure-containing equipment.
Advantages of Alloy Steel Blind Flanges
High Temperature Resistance
Alloy steel grades such as F11, F22, and F91 perform reliably under elevated temperatures.
Superior Mechanical Strength
Forged construction provides excellent toughness and load-bearing capability.
Long Service Life
Engineered for demanding industrial environments.
Reliable Sealing Performance
Precision-machined sealing faces ensure leak-free operation.
International Standard Compliance
Manufactured according to EN, ASME, DIN, ASTM, and GB requirements.
Marking
Standard export marking includes:
· Size (DN / NPS)
· Pressure Rating (PN / Class)
· Material Grade
· Standard Number
· Heat Number
· Manufacturer Identification
Packaging & Delivery
Packaging
· Plywood Cases
· Fumigation-Free Wooden Cases
· Pallet Packaging
· Waterproof Protection
Delivery
· Standard Export Packaging
· Worldwide Shipping
· Sea Freight and Air Freight Available
· Project-Based Delivery Support
FAQ
What is a blind flange used for?
A blind flange is used to close the end of a pipeline or pressure vessel opening, allowing future expansion, inspection, and maintenance while preventing leakage.
Which standards are available?
Common standards include EN 1092-1, ASME B16.5, ASME B16.47, GB/T 9115, and HG/T flange standards.
Which alloy steel grades are available?
Typical grades include ASTM A182 F11, F22, F5, F9, and F91.
Are DIN and EN blind flanges suitable for European projects?
Yes. EN 1092-1 and DIN flanges are widely used throughout Europe and comply with European industrial requirements.
Can customized blind flanges be manufactured?
Yes. Custom sizes, materials, drilling patterns, pressure ratings, and special coatings are available according to project specifications.
Related Products
· Weld Neck Flanges
· Slip-On Flanges
· Socket Weld Flanges
· Threaded Flanges
· Lap Joint Flanges
· Stainless Steel Flanges
· Carbon Steel Flanges
· Alloy Steel Flanges
· Pipe Fittings
· Industrial Valves
Request a Quote
SHAANXI GOLD-STONE I/E CO., LTD. supplies premium DIN alloy steel blind flanges for European and international industrial projects. Contact us today for technical specifications, pricing, drawings, and customized flange solutions.
Send Inquiry to This Supplier
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