We supply high-precision JIS B2220 40K flanges for high-pressure industrial and marine piping systems. These flanges feature stable performance, reliable sealing and long service life.
Product Description
JIS B2220 40K flange is a high-pressure steel pipe flange complying with Japanese standard JIS B2220, with a pressure rating of 40K (4.0 MPa). It is widely used in shipbuilding, petrochemical, power plant and high-pressure fluid transmission lines. Our 40K flanges are precision forged and CNC machined to meet strict dimensional requirements, ensuring high interchangeability and leak-free operation.
Product Feature and Application
Key Features
- Fully compliant with JIS B2220 standard dimensions
- High strength and excellent pressure resistance
- Smooth raised face ensures stable gasket sealing
- Good fatigue and vibration resistance
- High precision and full interchangeability
Typical Applications
- Shipbuilding and marine engineering
- Petrochemical and chemical plants
- Power plant boiler and steam systems
- High-pressure industrial fluid pipelines
- Compressed air and water transmission networks
Product Parameter
| Standard | JIS B2220 40K |
| Pressure Rating | 40K (4.0 MPa) |
| Nominal Diameter | 10A – 800A |
| Types | Weld Neck, Slip-on, Blind, Plate |
| Face Type | Raised Face (RF) |
| Materials | Carbon steel SS400, A105; Stainless steel SUS304, SUS316 |
| Working Temperature | −20°C – 400°C |
| Certification | EN 10204 3.1 MTC |
Production Details
Each JIS B2220 40K flange is produced under strict quality control:
- Raw material inspection with mill certificates and spectral analysis
- Precision closed-die forging for optimized grain structure
- Controlled heat treatment for stable mechanical properties
- High-precision CNC machining for accurate dimensions and bolt holes
- 100% dimensional inspection by calibrated gauges and CMM
- MT/UT non-destructive testing
- Hydrostatic pressure test to verify safety
- Anti-corrosion oil coating and permanent marking
Production Display
Our factory is ISO 9001 certified, equipped with large tonnage forging presses, heavy-duty CNC machining centers and professional testing laboratories. Full production process is traceable. Third party inspection by SGS, BV, TÜV is available upon request.
Product Transport Package
- Surface Treatment: Anti-corrosion oil, black paint or varnish
- Packaging: Plastic film, woven bag, export wooden case, steel pallet
- Labeling: Size, pressure, material, standard, heat number, batch
- Documents: Commercial invoice, packing list, certificate of origin, material test certificate
- Transportation: Sea, air and express delivery to global markets
After-sales Service
We provide full life-cycle support for JIS B2220 40K flanges:
- Professional technical consultation on selection and installation
- Custom sizes, materials and drilling per customer drawings
- Timely response to after sales inquiries and quality claims
- Remote technical guidance and on-site support
- Stable long-term supply for large-scale projects
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