DIN Flange Manufacturer — DIN EN 1092‑1 Flanges
As a trusted DIN flange manufacturer and global exporter, we supply precision-engineered DIN EN 1092‑1 flanges designed for reliable performance across industrial piping systems — from chemical plants and water treatment to shipbuilding, HVAC, and process engineering. Manufactured to European dimensional and pressure standards, our DIN flanges deliver secure sealing, consistent interchangeability, and long-term durability for PN-rated systems in a wide range of materials and face types.
Why choose DIN EN 1092‑1 flanges?
- European standardization: DIN EN 1092‑1 ensures consistent dimensions, bolt patterns, and pressure ratings (PN) across manufacturers, simplifying procurement and installation.
- Broad pressure & size coverage: Available in PN6, PN10, PN16, PN25, PN40 and more, and in sizes that suit low- to high-pressure applications.
- Material flexibility: Offered in carbon steels, stainless steels, alloy steels and specialty alloys to match corrosivity, temperature and process requirements.
- Robust design: Engineered for sustained service under pressure, temperature variation, and cyclic loads typical in industrial plants.
- Multiple flange types: Weld neck, slip-on, blind, threaded, socket weld, lap joint, reducing and other variants for specific installation needs.
DIN vs ASME — A Quick Comparison
| Feature | DIN (EN 1092‑1) | ASME (B16.5 / B16.47) |
|---|---|---|
| Size designation | DN (metric) | NPS (inch nominal) |
| Pressure rating system | PN (nominal pressure at ref temp) | Class (150–2500; temperature-dependent allowable pressure) |
| Common face types | RF, FF, RTJ | RF, FF, RTJ |
| Typical regions | Europe, EU projects, Middle East, Africa | North America, global projects requiring ASME code |
| Dimensional compatibility | Metric bolt circles/thicknesses; not directly interchangeable with ASME in many sizes | Imperial dimensions; some overlap but verify before mating |
| Material designation | EN/EN equivalents (metric) | ASTM/ASME/UNS (imperial) |
| Certification & regulatory context | EN standards; often used with PED/CE in EU | Code-level rules (B31 piping, BPVC); used where ASME stamping/code compliance required |
| When to choose | Projects specifying EN/PED, metric systems, European supply chains | Projects requiring ASME code compliance, US standards, or ASME-stamped equipment |
Check our ASME page for more details.
Standards & specifications
- Standard: DIN EN 1092‑1 — Flanges and their joints, specifying dimensions and PN pressure classes for circular steel flanges.
- Manufacturing to customer specs: DIN/EN/APPLICABLE ASTM on request.
- Quality systems: ISO 9001 certified production.
- Material & testing: EN/ASTM material specs, 3.1/3.2 certificates, PMI, UT/RT/MPI/PT as required.
- Traceability: MTRs, NDT reports, heat treatment records, WPS/PQR, and full heat-to-part traceability.
Materials, pressure classes and sizes we supply
We fabricate DIN EN 1092‑1 flanges from a wide range of materials to match process conditions:
- Carbon steels: S235JR, P250GH, 1.0460 equivalents
- Stainless steels: 1.4301 (304), 1.4404 (316L), Duplex (2205)
- Alloy steels and special grades available on request
- Pressure classes: PN6, PN10, PN16, PN25, PN40 (and higher on request)
- Size range: DN15 to large custom diameters per project requirements
Manufacturing process & quality assurance
- Raw material from qualified mills with certified test reports.
- Forging/plate forming, CNC machining, drilling and facing to DIN tolerances.
- Heat treatment and surface finishing per material spec (pickling/passivation for stainless).
- NDE: PMI, UT/RT/MPI/PT as specified.
- Documentation: MTRs, 3.1/3.2 certificates, NDT logs, WPS/PQR, and inspection records.
- Third-party inspection available (ABS, DNV, Lloyd’s, BV, SGS).
Facing and Bore Options
- Facing: Raised face (RF), Flat face (FF), Ring Type Joint (RTJ where applicable), special finishes per client spec.
- Bore: Full bore, reduced bore, counter-bored; machined to DIN tolerances.
Testing, certification and export documentation
- Hydrostatic tests and required NDT for assemblies.
- Protective packing: VCI, desiccants, export-grade wooden crates.
- Marking: Part number, heat number, material, DN/Pn, and manufacturing date.
- Logistics: FOB, CIF, DDP — container stuffing, bulk or project handling available.
Packing, shipping and delivery options
- Individual wooden boxes / crates with anti-corrosion packing.
- VCI (Vapor Corrosion Inhibitor) paper and desiccants for humid routes.
- Marking: Part number, heat number, material, size, pressure class, and manufacturing date on each flange.
- Documentation pack: MTRs, inspection reports, packing list, commercial invoice, certificate of origin (if required), and export customs paperwork.
- Options: FOB, CIF, DDP quotes; container stuffing & lashing; bulk or project-by-project logistics.
Quality assurance & traceability
- Heat-to-part traceability recorded; unique serial/heat numbers laser-etched.
- Full MTRs (ASTM/EN) and 3.1/3.2 certificates issued by default.
- Welding records (WPS/PQR), NDT logs and inspector sign-offs available.
- Continuous improvement via process monitoring and internal audits.
Request a quote
For firm quotes: provide required NPS, pressure class, material grade, face type, quantity, and destination port/terms