Shanxi Xinshunda Flange Manufacturing Co., Ltd. supplies high-precision KS B1503 16K flanges for medium-to-high pressure Korean standard piping systems. Fully compliant with KS B1503 (matching JIS B2220 16K), our flanges feature excellent pressure resistance, stable sealing and high interchangeability. With 19 years of professional forging and machining experience, we provide reliable flange solutions for shipbuilding, petrochemical, power and industrial projects across Korea, Japan and Southeast Asia.
Product Description
KS B1503 16K flange is a medium-to-high pressure steel pipe flange defined by Korean standard KS B1503, with a pressure rating of 16K (1.6 MPa / 232 psi). It is widely used in industrial process piping, marine systems, boiler auxiliaries, oil and gas utility lines. Our 16K flanges are precision forged and CNC machined to strict dimensional standards, ensuring strong structural integrity, easy installation and long service life.
Product Feature and Application
Key Features
- Full compliance with KS B1503 standard dimensions
- 16K pressure rating for medium-to-high pressure systems
- High dimensional accuracy and strong interchangeability
- Forged structure ensures high strength and fatigue resistance
- Smooth sealing surface for reliable gasket performance
- Easy welding and installation
- Fully compatible with Korean and Japanese valves and fittings
Main Applications
- Petrochemical and chemical process piping
- Marine and shipbuilding engineering
- Power plant and boiler auxiliary systems
- Industrial high-pressure fluid pipelines
- Compressed air, gas and water transmission lines
- Korean, Japanese and Southeast Asian industrial projects
Product Parameter
| Standard | KS B1503 16K (consistent with JIS B2220 16K) |
| Pressure rating | 16K (1.6 MPa / 232 psi) |
| Nominal diameter | 10A – 1000A (DN10 – DN1000) |
| Types | Weld Neck, Slip-on, Blind, Plate, Threaded |
| Face type | Raised Face (RF), Flat Face (FF) |
| Surface roughness | Ra 1.6–3.2 μm |
| Materials |
Carbon steel: SS400, S235JR, A105 Stainless steel: STS304, STS316, 304L, 316L |
| Working temperature | −20 °C – 350 °C |
| Certification | EN 10204 3.1 Material Test Certificate |
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
Our ISO 9001 certified factory is equipped with advanced forging lines, CNC machining centers, heat treatment furnaces and professional testing laboratories. Full production traceability and third-party inspection by SGS, BV, TÜV are available.
Packaging & Transportation
- Surface treatment: Anti-corrosion oil, varnish or black paint
- Packaging: Plastic film, woven bag, export wooden case, steel pallet
- Labeling: Size, class, material, standard, heat number, batch
- Documents: Commercial invoice, packing list, certificate of origin, MTC
- Transportation: Sea, air and express delivery worldwide
After-sales Service
We provide full life cycle technical support:
- Professional selection and installation consultation
- Custom sizes, materials and drilling per drawings
- Timely response to inquiries and claims
- Remote and on-site technical support
- Stable long-term supply for large projects
Why Choose Shanxi Xinshunda?
- 19 years of professional flange manufacturing
- Full compliance with KS B1503 standards
- Complete size range with fast delivery
- Strict quality control and complete certification
- Direct factory price and reliable logistics
- Multilingual service for global clients
Contact us for catalog, quotation and customized solutions of KS B1503 16K flanges.
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