Slip-On Flange (JIS Standard)

The Slip-On Flange (SO Flange), manufactured according to Japanese Industrial Standards (JIS), is designed for easy alignment and installation in piping systems. It is slipped over the pipe and then fillet welded at both the inside and outside, ensuring a secure and reliable connection.

Compared to weld neck flanges, slip-on flanges are more cost-effective and easier to install, making them widely used in low to medium pressure applications across industries such as water treatment, shipbuilding, petrochemical, and general industrial piping systems.


🔹 Product Details


1. Standards & Specifications

Standard: JIS B2220 / JIS B2238

Pressure Rating: 5K, 10K, 16K, 20K, 30K

Size Range: 10A–1500A

Facing Type: RF (Raised Face), FF (Flat Face)


2. Materials

Carbon Steel: SS400, SF440

Stainless Steel: SUS304, SUS316, SUS304L, SUS316L

Other materials available upon request


3. Key Features

Easy installation and alignment

Double welding (inside and outside) for improved strength

Cost-effective compared to weld neck flanges

Suitable for low to medium pressure applications

Good performance in general industrial environments


4. Applications

Water supply and drainage systems

Shipbuilding and marine engineering

Petrochemical and chemical industries

HVAC and utility pipelines


5. Surface Treatment & Inspection

Anti-rust oil, black painting, galvanizing available

Dimensional inspection, PMI, and pressure testing supported


Product Details

🔹 Product Details


1. Standards & Specifications

Standard: JIS B2220 / JIS B2238

Pressure Rating: 5K, 10K, 16K, 20K, 30K

Size Range: 10A–1500A

Facing Type: RF (Raised Face), FF (Flat Face)


2. Materials

Carbon Steel: SS400, SF440

Stainless Steel: SUS304, SUS316, SUS304L, SUS316L

Other materials available upon request


3. Key Features

Easy installation and alignment

Double welding (inside and outside) for improved strength

Cost-effective compared to weld neck flanges

Suitable for low to medium pressure applications

Good performance in general industrial environments


4. Applications

Water supply and drainage systems

Shipbuilding and marine engineering

Petrochemical and chemical industries

HVAC and utility pipelines


5. Surface Treatment & Inspection

Anti-rust oil, black painting, galvanizing available

Dimensional inspection, PMI, and pressure testing supported


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