JIS 5K plate flange
Direct factory supply eliminates middlemen, offering competitive wholesale prices without compromising quality. Large stock availability for standard models ensures fast delivery (7-15 working days for stock items; 20-30 days for custom orders). Professional technical support and after-sales service guarantee smooth cooperation
Versatile Customization & Wide ApplicationSupports custom sizes (DN15-DN2000/1/2"-80"), materials, and pressure classes to meet specific project requirements. Suitable for pipeline systems in oil & gas, petrochemical, water treatment, marine, HVAC, and boiler industries—one-stop solution for industrial piping needs.
Product Overview

Key Specifications
Category | Details |
|---|---|
Product Types | Slip on plate flange, Blind plate flange, Flat plate flange, Weld neck plate flange, Lap joint plate flange |
Materials | Carbon steel (A36, Q235B, Q345B), Stainless steel (304, 316L, 321), Alloy steel (16Mn, 15CrMo), Duplex steel (2205, 2507) |
International Standards | ANSI B16.5, ASME B16.47, DIN 2527, EN 1092-1, JIS B2220, GB/T 9119 |
Pressure Class | Class 150, 300, 600, 900; PN10, PN16, PN25, PN40, PN63 |
Size Range | DN15 - DN2000 (1/2" - 80") |
Sealing Face Type | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint), MFM (Male-Female Face) |
Manufacturing Process | Forging, CNC precision machining, Heat treatment (quenching & tempering), Sandblasting, Anti-corrosion coating |
Quality Certification | ISO 9001:2015, CE, API 6A, RoHS, REACH |
Core Product Advantages
Exceptional Durability: Made from high-purity raw materials with strict chemical composition testing, our plate flanges exhibit excellent corrosion resistance, high-temperature tolerance (-40℃ to 600℃), and strong pressure-bearing capacity. The forged structure enhances material density, reducing the risk of cracks and leaks in harsh working conditions.
Precision & Compatibility: Adopting advanced CNC machining centers, the dimensional tolerance of our flanges is controlled within ±0.02mm, ensuring a perfect fit with global piping systems. All products comply with international standards, eliminating compatibility issues for cross-border projects.
Reliable Sealing Performance: The optimized sealing face design with Ra 1.6-3.2 surface finish ensures tight sealing even under high pressure and vibration. This significantly reduces operational risks in oil, gas, and chemical pipelines, minimizing maintenance costs.
Flexible Customization: We support customizations of size, material, pressure class, and surface treatment according to your project drawings or samples. Whether it's a small-batch special specification or a large-scale customized order, we can meet your needs efficiently.
Cost-Effective Supply: As a direct factory, we cut out middlemen to offer competitive wholesale prices. We maintain a large inventory of standard flanges, ensuring fast delivery (7-15 working days for stock items; 20-30 working days for custom orders) to avoid project delays.
Eco-Friendly Production: Our production processes adopt energy-saving equipment and recyclable materials, complying with global environmental standards. The anti-corrosion coating is non-toxic and pollution-free, helping you achieve sustainable development goals.
Application Scenarios
Oil & Gas Industry: Pipeline systems for exploration, extraction, and transportation
Chemical & Petrochemical Industry: Reactors, storage tanks, and medium transmission pipelines
Power Generation: Thermal power plants, nuclear power plants, and renewable energy systems
Water Treatment: Municipal water supply, sewage treatment, and desalination projects
Marine & Shipbuilding: Ship piping systems and offshore platform equipment
HVAC & Boiler Systems: Heating, ventilation, and boiler connection pipelines
