DIN Standard SS SO Flange
High-Quality DIN Standard Stainless Steel Slip-On Flanges for Industrial Piping
SSM manufactures precision-engineered stainless steel slip-on flanges that fully comply with DIN standards, offering reliable performance in European and international piping systems. Our SS SO flanges are available in 1.4301 (304), 1.4401 (316), and 1.4404 (316L) grades for various industrial applications.
DIN Standard SS SO Flange Specifications
1. Standard Dimensions & Pressure Ratings
| Nominal Size (DN) | Pressure Ratings (PN) | Standards | Key Dimensions |
|---|---|---|---|
| DN15 - DN600 | PN6, PN10, PN16, PN25, PN40 | DIN 2576, DIN 2633 | Outside Diameter, Bolt Circle |
| Flange Type | Facing | Tolerance | Measurement Standard |
| Slip-On (SO) | Raised Face (DIN 2526) | ±1.0mm | DIN 2632, DIN 2633 |
2. Material Specifications (DIN/EN Designations)
| Grade | EN Standard | Material No. | Equivalent ASTM |
|---|---|---|---|
| 304 | EN 1.4301 | 1.4301 | A182 F304 |
| 304L | EN 1.4307 | 1.4307 | A182 F304L |
| 316 | EN 1.4401 | 1.4401 | A182 F316 |
| 316L | EN 1.4404 | 1.4404 | A182 F316L |
3. Pressure-Temperature Ratings
| PN Rating | Working Pressure (Bar) | Max Temperature (°C) | Min Temperature (°C) |
|---|---|---|---|
| PN6 | 6 | 200 | -20 |
| PN10 | 10 | 200 | -20 |
| PN16 | 16 | 200 | -20 |
| PN25 | 25 | 200 | -20 |
| PN40 | 40 | 200 | -20 |
Manufacturing & Quality Assurance
Production Process
Material Selection - Certified EN 10204 3.1 mill certificates
Cutting - Precision plasma/laser cutting
Forming - Hydraulic pressing for perfect roundness
Machining - CNC-controlled face machining
Surface Treatment - Electropolishing available
Quality Control Tests
Dimensional Inspection - 100% verification per DIN 2633
Material Verification - PMI testing
Surface Roughness - Ra ≤ 3.2μm standard
Visual Inspection - Per DIN EN 10204
Leak Testing - Optional hydrostatic testing
Technical Advantages
✔ Precision Alignment - Perfect bore concentricity for easy installation
✔ Smooth Weld Preparation - Prepared inner weld bevel for quality welds
✔ DIN-Compliant Dimensions - Guaranteed compatibility with European piping
✔ Multiple Surface Finishes - Mill finish, polished, or coated options
Industry Applications
Chemical Processing
Acid storage systems
Reactor connections
Chemical transfer lines
Food & Beverage
Hygienic piping systems
Dairy processing
Brewery installations
Water Treatment
Desalination plants
Wastewater systems
Filtration equipment
Available Configurations
Standard Options
PN6-PN40 Pressure Ratings
Raised Face (DIN 2526)
Flat Face (FF) 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 Slip-On Flanges?
• Direct Manufacturer with competitive pricing
• Full EN 10204 3.1 Certification
• Complete DIN Standard Compliance
• European Warehouse Stock for fast delivery
• Technical Support for DIN system integration
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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