JIS Standard Flanges

If you build pipelines, pumps, or vessels for Japanese markets, JIS flanges are essential. Our JIS Standard Flanges meet B2220:2017 requirements for 5K, 10K, and 20K pressure ratings, ensuring global compliance and easy fitment.

Standard Specification

JIS B2220:2017 (5K/10K/20K)

Pressure Rating

5K (PN7), 10K (PN14), 20K (PN28) [K=kgf/cm²]

Material

Carbon Steel (JIS G4051 S25C), Stainless Steel (JIS G4303 SUS304), Alloy Steel (JIS G4105)

Nominal Size

10A to 1000A (1/2″ to 40″) [A=nominal bore in mm]

Flange Type

JIS 5K/10K/20K (Weld Neck, Slip-On, Blind, Lapped)

Product Description

Incorrect flange types or misaligned bolt circles cause delays during assembly or site inspections. We avoid these issues by machining to exact JIS standards, offering carbon steel, stainless, and alloy grades to match your project.

Facing Type

Flat Face (FF), Raised Face (RF) [No RTJ in JIS standard]

Dimensions

JIS B2220 Table 1 (OD, thickness), Table 2 (bolt circle)

Bolt Circle Diameter

Metric series (e.g., 65mm for 15A 10K) [JIS B2220 Table 2]

Number & Size of Bolt Holes

JIS B1180 hex bolts (e.g., 15A 10K: 4×M16) [JIS B2220 Table 2]

Surface Finish

3.2S (gasket face), 6.3S (non-contact) [JIS B0601]

Corrosion Resistance

JIS H8651 (zinc plating), JIS K6748 (PVC lining)

Temperature Rating

-20°C to +350°C (carbon steel), -196°C to +800°C (stainless)

Material Certification

JIS Z2201 (test pieces), JIS G0303 (inspection rules)

Gasket Compatibility

JIS B2401 (non-asbestos), JIS B3456 (spiral wound)

Coating/Plating

JIS H8641 (hot-dip galvanizing), JIS H8610 (electroplating)

Manufacturing Method

JIS B2207 (forged), JIS G3445 (carbon steel pipe flanges)

Technical Advantages

JIS standards demand exact bolt patterns, and we follow JIS B2220 tables precisely to avoid costly redrilling during assembly. Each flange matches the correct 3.2S surface finish (gasket face) and includes metric bolt hole sizing for direct fit.
Our flanges cover 5K (PN7), 10K (PN14), and 20K (PN28) pressure classes to support low to medium-pressure applications. All units ship with JIS-compliant zinc plating, galvanizing, or PVC lining based on service requirements.

Let's Get Started

Need reliable Flanges for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

Industry Applications

Pump and Valve Manufacturing

JIS 10K flanges allow quick installation in pumps and valves shipped to Japan or Korea, with proper metric bolt sizing.

Shipbuilding and Marine Equipment

Used on pipelines, ballast systems, and cargo pump connections on vessels built for Japanese-class approvals.

Chemical and Petrochemical Plants

Handles corrosive process lines using SUS304 or SUS316 flanges, aligned with JIS gasket standards.

Firefighting Equipment

Applied in JIS-standard fire hydrant systems and sprinkler pipelines where 5K and 10K flanges ensure proper sealing.

Water and Wastewater Treatment

Allows fast-fit slip-on or plate flanges on DN200 to DN600 piping in municipal water networks.

OEM Equipment Export

Helps OEMs meet Japanese import specifications for skid units, heat exchangers, or reactors.

Precision in Industrial Standards

Sourcing teams face challenges with mixed standards and approvals when building for export markets. Our JIS flanges simplify that process by delivering fully compliant units with metric bolt patterns and JIS material certifications.
We offer slip-on, weld neck, blind, and lapped flange types across 10A to 1000A nominal sizes, supporting quick assembly in global projects. This helps reduce delays, eliminate fitment risks, and ensures your equipment clears inspections for Japan and other JIS-adopted regions.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

Are your JIS flanges compliant with the latest 2017 edition of JIS B2220?

Yes, all our JIS flanges follow the JIS B2220:2017 standard exactly without deviation. We maintain full dimensional accuracy and inspection as per current Japanese norms. This ensures compatibility with new and replacement projects globally.

Can you supply both carbon steel and stainless steel JIS flanges for mixed piping systems?

Yes, we manufacture JIS flanges in carbon steel, stainless steel, and alloy steel grades. You can mix materials within the same project without compatibility issues. Our material certifications also match JIS quality inspection standards.

What surface finish do your JIS flanges have for gasket seating areas?

Our gasket faces come with a 3.2S finish as per JIS B0601 standard. This finish supports tight sealing with standard gaskets without surface damage. Non-contact areas maintain a 6.3S finish for corrosion resistance.

Are your JIS flanges suitable for both offshore and onshore piping setups?

Yes, our JIS flanges are produced with zinc plating or PVC lining options for corrosion-prone areas. Offshore buyers prefer PVC lined or stainless options for longer service life. We provide plating and coating according to JIS H8651 and H8641 standards.

Can you provide JIS flanges with specific gasket compatibility for non-asbestos sealing?

Yes, we manufacture JIS flanges that fit non-asbestos gaskets as per JIS B2401 standards. This helps you meet stricter environmental and safety regulations in industrial plants. We also confirm gasket compatibility during material inspection stages.

Can Frigate support bulk orders with consistent dimensional accuracy across batches?

Yes, Frigate ensures repeatability through controlled machining and validated JIS B2220 tooling setups

Batch production follows strict inspection checkpoints to maintain identical bolt patterns and tolerances

We provide batch-wise inspection reports and traceability documentation

Ideal for EPC contractors and OEMs requiring uniformity across large projects

What is Frigate’s typical lead time for JIS flange manufacturing and dispatch?

Standard sizes (10A–300A) are available with short production cycles or ready stock options

Larger sizes or alloy grades follow a defined production schedule based on order volume

Expedited manufacturing is available for urgent export requirements

Clear delivery timelines are committed at the quotation stage to support project planning

Does Frigate provide documentation required for export and project approvals?

Yes, we supply complete documentation including MTC (Material Test Certificates) as per JIS standards

Dimensional inspection reports aligned with JIS B2220 tables are included

Coating and plating compliance certificates (JIS H8641, H8651) are provided

Export packaging and documentation are prepared to meet international shipping and inspection requirements

Can Frigate customize JIS flanges for project-specific requirements?

Yes, we manufacture custom configurations including thickness adjustments and special coatings

Additional drilling, tagging, or marking can be incorporated based on project needs

Compatibility checks with mating components (valves, pumps, pipelines) are supported

Engineering team reviews drawings to ensure manufacturability before production

Why should buyers choose Frigate as their JIS flange manufacturing partner?

Direct manufacturer with control over machining, finishing, and inspection processes

Proven experience in supplying export-grade industrial components across sectors

Alignment with structured BOM-driven manufacturing practices similar to our valve assemblies

Focus on reducing procurement risks through precision, compliance, and timely delivery

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Components Built for Critical Performance

Engineered Products for Critical Applications

JIS Standard Flanges

Standard Specification

Pressure Rating

Material

Nominal Size

Flange Type

Product Description

Facing Type

Dimensions

Bolt Circle Diameter

Number & Size of Bolt Holes

Surface Finish

Corrosion Resistance

Temperature Rating

Material Certification

Gasket Compatibility

Coating/Plating

Manufacturing Method

Technical Advantages

Let's Get Started

Industry Applications

Precision in Industrial Standards

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Having Doubts? Our FAQ

Get Clarity with Our Manufacturing Insights

We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

JIS Standard Flanges

Get Latest Price

JIS Standard Flanges

Get Latest Price