EN 1092-1 Forged Steel Pipe Flanges for European Industrial Piping
European metric piping systems need connection parts built to exact continental size and pressure codes. Our forged steel flanges follow strict EN 1092-1 standards. Each component goes through hot forging and CNC machining to create a dense metal structure that handles heavy loads and stops leaks. Every production batch comes with traceable EN 10204 3.1 material test certificates, fitting directly into European chemical plants, water treatment lines, and industrial equipment.
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![Steel Plate Flange]()
Steel Plate FlangeExecution Standard：EN1092-1 type01
Type/Model：Forged，Plate Flange
Specification：DN15-DN600 -
![EN Slip-on Flange]()
EN Slip-on FlangeStandard: EN1092-1 Type 12
Material: carbon steel, alloy steel, stainless steel
Connection type: butt welding, bolted connection -
![EN Weld Neck Flange]()
EN Weld Neck FlangeForged to EN 1092-1 Type 11 standard
Butt-welding connection for high-integrity piping systems
DN10-DN4000, PN2.5-PN400 pressure ratings
Materials: P250GH, 13CrMo4-5,... -
![EN Blind Flange]()
EN Blind FlangeProduct: EN Blind Flange
Standard: EN 1092-1
Pressure Rating: PN6 (data sheet reference)
Material: Forged steel (carbon, alloy, stainless grades)
Connection Type: Bolted
EN 1092-1 Type 11 (Welding Neck Flanges): Features a long tapered hub that transfers pipe stress away from the weld. Recommended for high pressure, sub-zero, or high temperature services.
EN 1092-1 Type 01 (Plate Flanges / Slip-On): Slides over the pipe before fillet welding. Applied in low to moderate pressure utility lines that need simple alignment.
EN 1092-1 Type 05 (Blind Flanges): Solid forged steel plates with no center hole, bolted to close off pipe ends, valves, or pressure vessel openings.
Materials and Standards
|
Technical Parameter |
Standard Specification / Options |
|
Carbon Steel Grades |
P250GH, P280GH, P355GH, C22.8, ASTM A105 |
|
Stainless Steel Grades |
X5CrNi18-10 (1.4301 / 304), X2CrNi19-11 (1.4307 / 304L), X5CrNiMo17-12-2 (1.4401 / 316), X2CrNiMo17-12-2 (1.4404 / 316L), X6CrNiTi18-10 (1.4571 / 316Ti) |
|
Dimensional Standards |
EN 1092-1, DIN 2501, DIN 2527, DIN 2633, DIN 2635, BS 4504 |
|
Pressure Ratings (PN) |
PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400 |
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Nominal Sizes (DN) |
DN 10 to DN 2000 |
|
Facing Types |
Type A – Flat Face; Type B – Raised Face; Type C & D – Tongue and Groove; Type E & F – Recess; Type G & H – O-Ring Joint |
|
Surface Finish |
Standard surface roughness: 3.2 to 12.5 micrometers Ra |
Technical Specifications
Forging Process:
Hot forged using closed or open dies, followed by normalized or quenched and tempered heat treatment.
01
Mechanical Tests:
Yield strength, tensile strength, elongation, and impact test values verified at room and low temperatures according to EN 10222 rules.
02
Size Tolerances:
Outer diameter, bore size, bolt circle, and thickness machined strictly to EN 1092-1 limit tolerances.
03
Surface Protection:
Coated with anti-rust oil, water-based shop primer, hot-dip galvanizing, or electro-plating upon request.
04
Product Marking:
Cold-stamped on the rim with maker logo, nominal size (DN), pressure rating (PN), material grade, heat number, and EN 1092-1 standard code.
05
Applications
Chemical and Petrochemical: Process lines, reaction vessels, and heat exchanger pipes carrying aggressive fluids.
Water Treatment: Municipal water mains, desalination plants, and high-pressure pump station lines.
Industrial Heating and HVAC: District heating networks, steam boilers, and high-temperature water distribution circuits.
Shipbuilding: Shipboard ballast systems, cooling water piping, and fuel line connections.
Mechanical Equipment: Hydraulic power packs, industrial compressor units, and pressure vessel skids.
Non-Destructive Testing:
Ultrasonic testing checks for internal material flaws.
Magnetic particle or dye penetrant testing checks outer surfaces and bevels.
Size Inspection: Digital calipers, micrometers, and measuring tools verify every dimension against EN tables.
Quality Documents: EN 10204 3.1 Mill Test Certificates provided for every batch. Third-party checks by agencies like TUV, SGS, or Bureau Veritas are available upon request.
Raw Material Control:
Steel sourced only from certified mills. Chemical makeup checked using optical emission spectrometry.
Thermal Processing:
Computer-monitored gas furnaces run precise heating and cooling cycles to create uniform metal grain and correct hardness limits.
Precision Machining:
Vertical turning lathes and CNC machines execute turning, facing, and drilling to keep bolt holes and sealing faces accurate.
Customization and OEM Services
Non-Standard Sizes:
Production of heavy-wall or custom-hub EN flanges based on client engineering drawings.
Special Machining:
Custom gasket groove sizes, special bolt circle layouts, or corrosion-resistant weld overlay on sealing faces.
Special Alloys:
Made from duplex stainless steel, super duplex, nickel alloys, and copper-nickel grades.
OEM Branding:
Low-stress dot-matrix marking or laser etching of customer part numbers, project tags, and private logos.
Packaging and Delivery
Packaging:
Flange sealing faces covered with heavy plastic protectors. Secured on fumigation-free wooden pallets or packed inside export-grade wooden crates with waterproof wrap to prevent transit corrosion.
Shipping Documents:
Commercial invoice, packing list, certificate of origin, bill of lading, and material test reports sent by email before cargo arrives.
Logistics Support:
Flexible FOB, CIF, DDP, or EXW trade terms using container shipping or air freight arranged through major ports.
FAQ
Q: What is the difference between EN 1092-1 Type 11 and Type 01 flanges?
A: Type 11 is a welding neck flange featuring a long tapered hub designed to reduce stress concentration under high pressure and thermal cycling. Type 01 is a flat plate flange (slip-on) that slides over the pipe for fillet welding, suited for lower pressure utility lines.
Q: How do you ensure material traceability for EN flanges?
A: Every finished flange is cold-stamped with a unique heat number linked to the steel mill melt. This code matches the EN 10204 3.1 Mill Test Certificate, proving chemical composition and mechanical test results.
Q: What are the standard surface finish requirements for EN 1092-1 raised faces?
A: Standard finishes include turned or serrated surfaces with a roughness average between 3.2 and 12.5 micrometers, ensuring proper bite for gaskets to establish a leak-tight seal.
Q: Are your EN 1092-1 flanges compliant with the European Pressure Equipment Directive (PED)?
A: Yes. Our manufacturing procedures align with PED 2014/68/EU requirements, and materials are fully traceable with EN 10204 3.1 certification. Specific PED-compliant marking can be provided upon request.
Q: What is the typical production lead time for standard EN flanges?
A: Standard carbon steel EN 1092-1 flanges in common pressure ratings (PN 16 to PN 40) and sizes (DN 50 to DN 300) are typically available for dispatch within 15 to 20 days. Custom alloy grades or large-diameter items require 30 to 45 days.
Q: Can you arrange third-party inspection prior to shipment?
A: Yes. We regularly accommodate inspections conducted by recognized European notified bodies and inspection agencies, including TUV, SGS, Bureau Veritas, and Lloyd's Register.
Q: What documents are included with each delivery?
A: Each shipment includes the commercial invoice, packing list, bill of lading, and traceable EN 10204 3.1 Mill Test Certificates. Additional NDT inspection records and certificates of origin are provided per purchase order terms.
As one of the most professional en flanges manufacturers and suppliers in China, we are able to meet the needs of the majority of our customers. Please rest assured to wholesale high quality en flanges made in China here from our factory. For price consultation, contact us.
Steel Plate Flange, 1 2 inch flange plate, flange type 11
