Shanxi Xinshunda Flange Manufacturing Co., Ltd. supplies high-performance KS B1503 20K flanges for high-pressure Korean standard piping systems. Fully compliant with KS B1503 (JIS B2220 20K), our flanges deliver superior pressure capacity, stable sealing and long service life for demanding industrial and marine environments. Backed by 19 years of forging expertise, we serve clients in Korea, Japan, Southeast Asia and global shipbuilding industries.
Product Description
KS B1503 20K flange is a high-pressure steel pipe flange under Korean standard KS B1503, rated at 20K (2.0 MPa / 290 psi). It is designed for high-pressure fluid pipelines in shipbuilding, refineries, power plants and heavy industry. Our 20K flanges adopt precision forging and CNC machining to ensure strict dimensional accuracy, excellent structural strength and leak-free performance.
Product Feature and Application
Key Features
- Strictly conform to KS B1503 dimensions
- 20K high-pressure rating for heavy-duty service
- High strength and excellent pressure resistance
- Precise machining for perfect interchangeability
- Reliable raised face sealing
- Good fatigue and vibration resistance
- Compatible with Korean/Japanese standard equipment
Main Applications
- High-pressure shipbuilding piping systems
- Petroleum refinery and petrochemical units
- Power plant steam and water pipelines
- Industrial high-pressure fluid transmission
- Offshore platforms and marine engineering
- Korean and Japanese standard project sites
Product Parameter
| Standard | KS B1503 20K (JIS B2220 20K) |
| Pressure rating | 20K (2.0 MPa / 290 psi) |
| Nominal diameter | 10A – 1000A (DN10 – DN1000) |
| Types | Weld Neck, Slip-on, Blind, Plate |
| Face type | Raised Face (RF) |
| Surface roughness | Ra 1.6–3.2 μm |
| Materials | Carbon steel SS400, A105; Stainless steel STS304, STS316 |
| Working temperature | −20 °C – 380 °C |
| Certification | EN 10204 3.1 MTC |
Production Details
Each KS B1503 16K flange is manufactured under strict quality control:
- Raw material inspection with mill certificates and spectral analysis
- Precision forging and controlled heat treatment
- CNC machining for accurate dimensions, bolt holes and facing
- 100% dimensional inspection using calipers, gauges and CMM
- Visual inspection and optional MT/UT non-destructive testing
- Hydrostatic testing to verify pressure integrity
- Anti-corrosion oil coating and permanent marking
- Full material traceability
Production Display
ISO 9001 certified factory with full sets of forging, machining and testing equipment. Full process traceability and third-party inspection supported.
Packaging & Transportation
Standard export packaging with anti-corrosion treatment, wooden cases and pallets. Complete shipping documents provided.
After-sales Service
Professional technical support, customized production, timely after-sales response and long-term supply guarantee.
Why Choose Shanxi Xinshunda?
19 years of experience, strict quality control, complete size range, factory direct price and global logistics support.
Contact us for KS B1503 20K flange catalog and quotation.
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