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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.
Type: Butt-welding fittings (for welding to pipes)
Material: Carbon steel (often JIS G 3452 or JIS G 3454 compliant pipes)
Common Fittings:
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.
Hydrostatic tests
Visual inspections
Dimensional checks
Non-destructive tests (if required)
Markings typically include: fitting type, size, material grade, manufacturer, and JIS mark.
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)
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"
Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
---|---|---|---|---|---|---|---|
BS | En | No | Name | ||||
304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | 2352 | SUS 304L |