DIN 2633/2634 Stainless Steel Flange
German Standard Flanges for European Industrial Piping Systems
SSM manufactures high-quality stainless steel flanges that strictly conform to DIN 2633 (PN6-PN40 weld neck) and DIN 2634 (PN6-PN40 blind flange) standards, ensuring perfect compatibility with European piping networks. Our flanges are available in 1.4301 (304), 1.4401 (316), and 1.4404 (316L) grades.
DIN 2633/2634 Flange Specifications
1. Standard Dimensions & Pressure Ratings
| Parameter | DIN 2633 (WN) | DIN 2634 (BL) |
|---|---|---|
| Size Range | DN10-DN600 | DN10-DN600 |
| Pressure Ratings | PN6, PN10, PN16, PN25, PN40 | PN6, PN10, PN16, PN25, PN40 |
| Face Types | RF (DIN 2526) | RF/FF |
| Bolt Standards | DIN EN 1092-1 | DIN EN 1092-1 |
| Hub Length | Standard/Long | N/A |
2. Material Specifications (DIN/EN)
| Material | EN Designation | DIN No. | Chemical Composition |
|---|---|---|---|
| 304 | 1.4301 | X5CrNi18-10 | 18% Cr, 8% Ni |
| 316 | 1.4401 | X5CrNiMo17-12-2 | 17% Cr, 12% Ni, 2% Mo |
| 316L | 1.4404 | X2CrNiMo17-12-2 | 17% Cr, 12% Ni, 2% Mo (Low C) |
3. Pressure-Temperature Chart
| PN Rating | Max Pressure (Bar @ 20°C) | Temperature Derating Factor |
|---|---|---|
| PN6 | 6 | 1.0 @ ≤120°C |
| PN10 | 10 | 0.9 @ 150°C |
| PN16 | 16 | 0.8 @ 200°C |
| PN25 | 25 | 0.7 @ 250°C |
| PN40 | 40 | 0.6 @ 300°C |
Manufacturing & Quality Assurance
Production Process
Material Certification - EN 10204 3.1 certificates
Precision Machining - CNC turning centers
Surface Treatment - Electropolishing available
Marking - Laser etching per DIN standards
Final Inspection - 100% dimensional verification
Quality Control Tests
Dimensional Checks - Per DIN 2633/2634 tables
Material Verification - PMI testing
Hardness Testing - HRB scale
Surface Finish - Ra ≤ 3.2μm standard
Leak Testing - Optional hydrostatic tests
Technical Advantages
✔ Precision German Engineering - Exact DIN standard compliance
✔ Smooth Weld Preparation - 30° bevel with 1mm root face
✔ Full Material Traceability - Heat number tracking system
✔ Corrosion Resistance - Pickled & passivated surfaces
Available Configurations
Standard Options
PN6-PN40 Pressure Ratings
Raised Face (DIN 2526)
Flat Face versions
Reducing flanges (special order)
Special Features
Electropolished Finish - For ultra-clean applications
PTFE Lined - For aggressive chemicals
Insulating Kits - For cathodic protection
Custom Drilling Patterns - Metric or imperial
Why Choose SSM DIN Flanges?
• Direct Manufacturer Pricing - No middlemen
• Complete EN 10204 3.1 Certification
• European Warehouse Stock - Fast delivery
• Technical Support - DIN standard expertise
• Custom Solutions - Special sizes/materials
Request Your Quote Today
Our engineering team provides:
DIN standard selection guidance
Material grade recommendations
Application-specific solutions
CAD models in DIN formats
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