JIS B 2312 Steel Pipe Fitting 90° 45° LR/SR Elbow SUS304 SUS304L

JIS B 2312 is a Japanese Industrial Standard (JIS) that specifies requirements for steel butt-welding pipe fittings. These fittings are used to connect sections of pipe or change direction/diameter in piping systems, typically for high-pressure and high-temperature applications, such as in oil, gas, steam, and water pipelines.

Key Details of JIS B 2312:

• Type: Butt-welding fittings (for welding to pipes)

• Material: Carbon steel (often JIS G 3452 or JIS G 3454 compliant pipes)

• Common Fittings:

  • Elbows in Long & Short Radius in 45 deg, 90 deg, 180 deg.
  • Return Bend, U Bend, Long Radius Bend.
  • Equal, Unequal Tee & Barred Tee.
  • Eccentric Reducer & Concentric Reducer.
  • Caps & Crosses.
  • Long & Short Stub End.
  • Swage Nipple & Barrel Nipple
  • Laterals

Dimensional Requirements:

• The dimensions for fittings (like wall thickness, diameter, etc.) are usually aligned with JIS B 2311, which is the dimension standard.

• JIS B 2312 focuses more on materials, manufacturing methods, inspection, marking, and testing rather than just the shape.

Testing & Inspection:

• Hydrostatic tests

• Visual inspections

• Dimensional checks

• Non-destructive tests (if required)

• Markings typically include: fitting type, size, material grade, manufacturer, and JIS mark.

Common Materials:

These are typical steel grades used for fittings under JIS B 2312:

• SGP – for pressure piping (JIS G 3452)

• STPG370 / STPG410 – for pressure applications (JIS G 3454)

Related JIS Standards:

• JIS B 2311 – Dimensions of steel butt-welding pipe fittings

• JIS B 2313 – Stainless steel butt-welding fittings

• JIS G 3452 / G 3454 – Steel pipe specifications

Stainless Steel Butt Weld Fittings We offer wide gamut of stainless steel butt weld fittings that are widely used in diverse industries. Our gamut of products conform various standards such as the varied grades of stainless steel butt weld fittings that we supply are.
Standard: ASTM / ASME A/SA 403 GR WP "S" / "W" / " WX"