Japan Application Standards System

◆ Pipe:
Large OD series (JIS G3454, JIS G3458, JIS G 3459) Mostly the same as ANSI.
Nominal diameter of seamless steel pipe: (DN6~DN650)mm
Wall thickness: Pipe table number "Sch" indicates the wall thickness.
Carbon and alloy steel JIS G3454, JIS G3458: Sch10, Sch20, Sch30, Sch40, Sch60, Sch80, Sch100, Sch120, Sch140, Sch160 10 grades;; and
Stainless steel JIS G 3459: Sch5s, Sch10s, Sch20s, Sch40s, Sch80s, Sch120s, Sch160s 7 grades.
Nominal diameter of welded steel pipe: (DN350~DN2000)mm
Wall Thickness: directly expressed by the value of wall thickness.

◆Pipe flange: (JIS B2201, JIS B2220, etc.) is a self-contained system, neither belongs to "American flange" nor "European flange".
Nominal Diameter: (DN10~DN1000)mm
Nominal pressure level: 2K, 5K, l0K, 16K, 20K, 30K, 40K, 63K, a total of 8 levels.
Flange sealing surface: smooth surface, large convex surface, small convex surface, concave-convex surface, tongue and groove surface 5 types
Flange type: flat welding type, socket welding type, butt welding type, threaded connection type, loose sleeve type and 6 types of flange cover.
The JIS application standard system cannot be used in conjunction with ANSI and DIN. In order to make up for this defect, the Japan Petroleum Institute prepared a set of JPI standards, which is basically equivalent to the use of ANSI/API application standard system, so it can be interchangeable with ANSI.
◆ Japan's application of standard system JIS commonly used standards are.
JIS G3452 Carbon Steel Tubes for General Purposes
JISG3454 Carbon Steel Pipe for Pressurized Use
JISG3455 Carbon Steel Pipe for Pressurized Use
JISG3456 Carbon Steel Pipe for High Temperature Use
JISG3457 Arc Welding Carbon Steel Pipe
JIS G3458 Alloy Steel Pipe
JIS G3459 Stainless Steel Pipe

JIS G3468 Arc Welding Large Diameter Stainless Steel Pipe
JIS B2201 Pressure rating of pipe flanges made of ferritic materials
JIS B2202 Pipe flange size
JIS B2210 Ferritic material pipe flange base size
JIS B2220 Steel Pipe Flanges
JIS B2302 Pipe fittings for threaded connections made of steel
JIS B2311 Steel butt-weld fittings for general purposes
JIS B2312 Butt-weld fittings made of steel
JIS B2313 Butt-welded fittings made of steel plate
JIS B2316 Socket weld fittings
JIS B2401 O-rings
JIS B2404 Winding gaskets for pipe and valve flanges
JIS B3453 Compressed asbestos gaskets

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