Shanxi Xinshunda Flange Manufacturing Co., Ltd. supplies heavy-duty KS B1503 30K flanges for ultra-high-pressure Korean standard piping systems. Fully compliant with KS B1503 (JIS B2220 30K), our flanges provide exceptional pressure bearing capacity, metal-to-metal compatibility and long-term reliability for critical industrial applications. With 19 years of manufacturing experience, we are a trusted supplier for high-pressure projects worldwide.
Product Description
KS B1503 30K flange is an ultra-high-pressure steel pipe flange specified by KS B1503, with a pressure rating of 30K (3.0 MPa / 435 psi). It is mainly used in high-pressure process systems, shipbuilding main pipelines, power equipment and heavy industrial applications. Our 30K flanges are forged from high-strength materials and precisely machined to ensure maximum safety, stability and service life.
Product Feature and Application
Key Features
- Full compliance with KS B1503 30K standard
- Ultra-high pressure rating 3.0 MPa
- Heavy-duty forged structure for maximum strength
- High precision and full interchangeability
- Excellent sealing and fatigue resistance
- Suitable for harsh and high-stress environments
- Compatible with Korean/Japanese high-pressure valves
Main Applications
- High-pressure main piping on ships
- Petrochemical high-pressure process lines
- Power plant boiler and steam systems
- Offshore and marine high-pressure utilities
- Heavy machinery and industrial high-pressure systems
- Critical Korean standard engineering projects
Product Parameter
| Standard | KS B1503 30K (JIS B2220 30K) |
| Pressure rating | 30K (3.0 MPa / 435 psi) |
| Nominal diameter | 10A – 800A (DN10 – DN800) |
| Types | Weld Neck, Blind Flange |
| Face type | Raised Face (RF) |
| Surface roughness | Ra 1.6–3.2 μm |
| Materials | Carbon steel A105, SS400; Stainless steel STS316, STS304 |
| Working temperature | −20 °C – 400 °C |
| Certification | EN 10204 3.1 Material Test Certificate |
Production Details
Each flange undergoes full-process quality control including raw material inspection, precision forging, heat treatment, CNC machining, 100% dimensional inspection, NDT and hydrostatic testing. Full traceability is guaranteed.
Production Display
Our factory is equipped with large forging presses, high-rigidity CNC machines and professional testing labs. ISO 9001 certified and third-party inspection available.
Packaging & Transportation
Anti-corrosion surface treatment, standard export wooden cases and pallets. Complete documentation for global customs clearance.
After-sales Service
Full technical support, customized design, timely after-sales service and stable bulk supply for large projects.
Why Choose Shanxi Xinshunda?
19 years of professional manufacturing, strict quality system, complete specifications, competitive price and reliable global delivery.
Contact us for KS B1503 30K flange solutions and best quotation.
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