Shanxi Xinshunda Flange Manufacturing Co., Ltd. supplies high-precision DIN 25 bar (PN25) flanges engineered for medium-to-high pressure industrial piping systems. Manufactured in full compliance with EN 1092-1 and DIN dimensional standards, our products deliver consistent sealing performance, structural integrity, and long service life under demanding operating conditions. Supported by nearly 20 years of forging and machining expertise, we are a trusted provider for global projects in oil & gas, petrochemical, power generation, energy, and utility sectors.
Advanced Engineering and Material Excellence
Our DIN 25 bar (PN25) flange series is designed for high-pressure, high temperature environments, with optimized geometry and material selection to ensure mechanical stability and sealing reliability. Produced from premium forgings of carbon steel, alloy steel, and stainless steel, all components undergo controlled heat treatment, precision forging, and CNC machining to maintain tight dimensional tolerances.
Key technical specifications include:
- Fully compliant with EN 1092-1 / DIN 2576, DIN 2631–2635 standards
- Pressure rating: 25 bar (2.5 MPa)
- Operating temperature range: −20 °C up to 550 °C (depending on material grade)
- Nominal diameters: DN10 to DN1200
- Face types: Raised Face (RF), Flat Face (FF), Tongue and Groove (TG), Ring Type Joint (RTJ)
- Surface roughness: Ra 1.6–3.2 μm (125–250 µin) for optimized gasket seating
- Full material traceability with EN 10204 3.1 Material Test Certificate
- Available materials:
- Carbon steel: C22.8, P250GH, 1.0460, A105
- Stainless steel: 1.4301 (304), 1.4401 (316), 1.4571, 1.4404
- Alloy steel: 1.7335, 1.7357, 1.7380
Typical Industrial Applications
DIN 25 bar (PN25) flanges are widely used in critical high-pressure piping systems across major industries:
- Oil & gas upstream, midstream, and refining facilities
- Petrochemical and chemical process plants
- Thermal power and industrial boiler systems
- High-pressure water, steam, and compressed air networks
- Energy projects including heat supply and renewable facilities
- Marine and offshore engineering systems
- Pipeline engineering, fire protection, and utility networks
Strict Quality Assurance System
Each DIN 25 bar flange is inspected through a complete quality control process to meet international standards:
Incoming material inspection with mill certificates and spectral analysis
Dimensional verification using CMM, calipers, gauges, and profile projectors
Visual, magnetic particle (MT), and ultrasonic (UT) non destructive testing
Hydrostatic testing to verify pressure containment and structural safety
ISO 9001 controlled production with full process documentation
Third party inspection by SGS, BV, TÜV, or other authorized bodies available on request
Packaging & Global Logistics
We provide industrial-grade export packaging to ensure safe long-distance transportation:
- Anti-corrosion oil coating, plastic film, and woven cloth protection
- Secure packing in export-grade wooden cases, steel crates, or pallets
- Permanent marking: heat number, size, material, standard, pressure rating, batch
- Full documentation: commercial invoice, packing list, certificate of origin, material test report
- Global delivery to more than 70 countries with flexible shipping solutions
Technical Support & Customization
Our engineering team provides full-life technical support for DIN 25 bar flanges:
- Custom design for non-standard dimensions, special materials, or face types
- Custom drilling patterns, machining, beveling, and coating services
- Professional consultation on pressure-temperature ratings, material selection, and installation
- Fast response to technical inquiries and after-sales service
Why Partner with Shanxi Xinshunda?
- 19 years of professional flange manufacturing experience serving 3,800+ global clients
- Full compliance with EN/DIN standards and strict quality control
- Direct factory pricing with stable lead times and reliable delivery
- Multilingual sales and technical support for seamless communication
- Continuous R&D to improve product performance and production efficiency
Contact us today for product catalogs, quotations, or customized solutions for your DIN 25 bar (PN25) flange projects.
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