Flanges
Flanges JIS Sip-on Welding
Flanges JIS Sip-on Welding is a group of 30 IMPA-coded items (codes 734601–734635) under Flanges in the Pipe & Tube Fittings section (IMPA 73). All of them are priced per piece. Every item in the list is steel. The list runs through 15 metric sizes from 10 mm to 300 mm.
Buying guide
Slip-on welding flanges slide over the pipe end and are fillet-welded inside and out. This group holds steel flat-face slip-on flanges to JIS B 2220 in 5K and 10K classes, from 10 mm nominal size upward — the standard flange of Japanese-built ship pipework.[1][2]
They are used for every flanged joint in water, oil and low-pressure steam lines. The engineer raises them with pipe renewals, spool fabrication and valve replacements.
How to specify it
State the standard (JIS B 2220), nominal pressure (5K or 10K), nominal size in A (mm), flange type (slip-on plate, SOP), face (flat FF or raised RF) and material. JIS B 2220 covers nominal pressures 5K, 10K, 10K light type, 16K, 20K, 30K, 40K and 63K and sizes 10A to 1500A, so class and size together fix the drilling.[1][2]
Order the flange to the class of the valve or equipment it mates with. Flat faces are used at low pressure so that bolting does not bend the flange; raised faces concentrate gasket load for a tighter seal.[2]
Rules and certificates
JIS B 2220 flanges do not correspond dimensionally to ASME B16.5 or EN 1092-1, and direct connection of an ASME or EN flange to a B2220 flange is generally not recommended.[2]
Questions buyers ask
- Will a DIN PN10 or ANSI 150 flange bolt to a JIS 10K flange?
- Not reliably. The standards differ in dimensions and some designs, and direct connection is generally not recommended; order JIS to JIS.
- What does 10K mean?
- It is the JIS nominal pressure class; the number roughly indicates the maximum working pressure in kgf/cm² at ambient temperature.
Published by Sherif Awad, founder of GeoMarineHub — in ship supply since 1990, a family business since 1981 (45 years). Last checked .
At a glance
Part of Pipe & Tube Fittings (IMPA section 73): Elbows, tees, flanges, unions, nipples, couplings and reducers to JIS, DIN and ANSI patterns.
It is one of 11 groups under Flanges; the others include Flange ANSI Slip-on Welding Stainless Steel, Flange JIS Slip-on Welding Stainless Steel, Flanges ANSI Slip-on Welding, Flanges DIN Carbon Steel Blind, Flanges DIN Carbon Steel Slip-on and 5 more.
Post the ones you need as a requirement and verified suppliers activated at your port bid on them — sealed, so nobody sees another bid.
- Items
- 30
- IMPA codes
- 734601–734635
- Priced
- per piece
- Materials
- steel
- Sizes
- 10 mm – 300 mm
Items
Also under Flanges
- Flange ANSI Slip-on Welding Stainless Steel
- Flange JIS Slip-on Welding Stainless Steel
- Flanges ANSI Slip-on Welding
- Flanges DIN Carbon Steel Blind
- Flanges DIN Carbon Steel Slip-on
- Flanges DIN Carbon Steel Slip-on Raised Face
- Flanges DIN Carbon Steel Weld-neck
- Flanges DIN Raised Face Type
- Flanges Square Pipe Welding
- JIS Steel Blind Flanges
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