Shanxi Xinshunda Flange Manufacturing Co., Ltd. delivers high-performance DIN 40 bar (PN40) flanges engineered for high-pressure industrial piping systems. Fully compliant with EN 1092-1 and DIN dimensional standards, our products deliver superior sealing performance, structural integrity, and long-term operational reliability under severe working conditions. Backed by nearly two decades of forging expertise and precision manufacturing, we serve as a reliable partner for global projects in oil & gas, petrochemical, power generation, energy, and utility sectors.
Advanced Engineering and Material Excellence
Our DIN 40 bar (PN40) flange series is designed for high-pressure and high-temperature service conditions, with optimized structural design and premium materials to ensure mechanical strength and sealing stability. All components are manufactured from high-grade forgings with controlled heat treatment and precision CNC machining to meet strict tolerance requirements.
Key technical specifications include:
- Fully compliant with EN 1092-1 / DIN 2576, DIN 2631–2635 standards
- Pressure rating: 40 bar (4.0 MPa)
- Operating temperature range: −20 °C up to 600 °C (material dependent)
- Nominal diameters: DN10 to DN800
- Face types: Raised Face (RF), Tongue and Groove (TG), Ring Type Joint (RTJ)
- Surface roughness: Ra 1.6–3.2 μm (125–250 µin) for reliable gasket seating
- Full material traceability with EN 10204 3.1 Material Test Certificate
- Available materials:
- Carbon steel: A105, P250GH, 1.0460, C22.8
- Stainless steel: 1.4301 (304), 1.4401 (316), 1.4571, 1.4404
- Alloy steel: 1.7335, 1.7357, 1.7380
Typical Industrial Applications
DIN 40 bar (PN40) flanges are widely used in critical high-pressure piping systems across major industries:
- Oil & gas upstream, midstream and refining processes
- Petrochemical and chemical processing plants
- Thermal power, boiler and high-pressure steam systems
- High-pressure water, compressed air and hydraulic networks
- Energy facilities, heat supply and industrial utility systems
- Marine, offshore and heavy engineering applications
- Pipeline engineering and high-pressure fire protection systems
Comprehensive Quality Assurance System
Each DIN 40 bar flange undergoes a full-stage quality control process to meet international standards:
- Incoming material inspection with mill certificates and spectral analysis
- Dimensional verification using CMM, precision gauges and profile projectors
- Visual inspection, magnetic particle testing (MT) and ultrasonic testing (UT)
- Hydrostatic testing to validate pressure containment and structural safety
- ISO 9001-controlled production with complete process documentation
- Third-party inspection by SGS, BV, TÜV or other authorized institutions available on request
Professional 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
- Complete documentation: commercial invoice, packing list, certificate of origin, material test report
- Global delivery to over 70 countries with flexible and reliable shipping solutions
Technical Support & Customization Services
Our engineering team provides full-life cycle technical support for DIN 40 bar flanges:
- Custom design for non-standard dimensions, special materials or sealing faces
- Custom drilling patterns, machining, beveling and anti-corrosion coatings
- 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 on-time 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 40 bar (PN40) flange projects.
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