Industrial flanges to ASME, EN and IS standards
Every common flange type from ½ inch to 80 inch and above, Class 150 to 2500, in carbon, alloy, stainless, duplex, nickel alloy, titanium and copper-nickel.
Flange types
| Type | What it is for | |
|---|---|---|
| Weld neck flanges | The tapered hub is butt-welded to the pipe, spreading stress away from the flange face. | Quote |
| Slip-on flanges | The pipe slides into the flange and is fillet-welded inside and outside. | Quote |
| Blind flanges | Solid flanges that close the end of a line, a nozzle or a valve, and allow later extension or inspection access.. | Quote |
| Socket-weld and threaded flanges | For small-bore lines up to about 2 inch: socket-weld flanges take a fillet weld, threaded flanges need no welding at all.. | Quote |
| Lap joint flanges | A loose backing flange paired with a stub end. | Quote |
| Orifice flanges and spectacle blinds | Orifice flanges for flow metering runs and spectacle blinds for positive isolation, made to ASME B16.36 and B16.48.. | Quote |
ASME B16.5 dimensions
Class 900 to 2500 dimensions are provided with quotations.
- ODOutside diameter
- PCDPitch circle (bolt circle) diameter
- BoltsNumber of holes x stud diameter
| Size | 150# OD | 150# PCD | 150# bolts | 300# OD | 300# PCD | 300# bolts | 600# OD | 600# PCD | 600# bolts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" (15 NB) | 90 | 60.3 | 4 x 1/2" | 95 | 66.7 | 4 x 1/2" | 95 | 66.7 | 4 x 1/2" | Quote |
| 1" (25 NB) | 110 | 79.4 | 4 x 1/2" | 125 | 88.9 | 4 x 5/8" | 125 | 88.9 | 4 x 5/8" | Quote |
| 2" (50 NB) | 150 | 120.7 | 4 x 5/8" | 165 | 127.0 | 8 x 5/8" | 165 | 127.0 | 8 x 5/8" | Quote |
| 3" (80 NB) | 190 | 152.4 | 4 x 5/8" | 210 | 168.1 | 8 x 3/4" | 210 | 168.1 | 8 x 3/4" | Quote |
| 4" (100 NB) | 230 | 190.5 | 8 x 5/8" | 255 | 200.0 | 8 x 3/4" | 275 | 215.9 | 8 x 7/8" | Quote |
| 6" (150 NB) | 280 | 241.3 | 8 x 3/4" | 320 | 269.9 | 12 x 3/4" | 355 | 292.1 | 12 x 1" | Quote |
| 8" (200 NB) | 345 | 298.5 | 8 x 3/4" | 380 | 330.2 | 12 x 7/8" | 420 | 349.2 | 12 x 1-1/8" | Quote |
| 10" (250 NB) | 405 | 362.0 | 12 x 7/8" | 445 | 387.4 | 16 x 1" | 510 | 431.8 | 16 x 1-1/4" | Quote |
| 12" (300 NB) | 485 | 431.8 | 12 x 7/8" | 520 | 450.8 | 16 x 1-1/8" | 560 | 489.0 | 20 x 1-1/4" | Quote |
| 16" (400 NB) | 595 | 539.8 | 16 x 1" | 650 | 571.5 | 20 x 1-1/4" | 685 | 603.2 | 20 x 1-1/2" | Quote |
| 20" (500 NB) | 700 | 635.0 | 20 x 1-1/8" | 775 | 685.8 | 24 x 1-1/4" | 815 | 723.9 | 24 x 1-5/8" | Quote |
| 24" (600 NB) | 815 | 749.3 | 20 x 1-1/4" | 915 | 812.8 | 24 x 1-1/2" | 940 | 838.2 | 24 x 1-7/8" | Quote |
Have a BOQ or drawing? Get a quotation from the manufacturer.
Send sizes, grades and quantities. Our estimation team usually replies within one working day.
Standards we manufacture to
- ASME B16.5
- ASME B16.47 Series A
- ASME B16.47 Series B
- ASME B16.36
- ASME B16.48
- EN 1092-1
- IS 6392
- BS 10
- DIN
- MSS SP-44
- Client drawings
Grades
Facings, marking, testing and packing
Facings
- Raised face (RF), serrated 125–250 AARH
- Flat face (FF)
- Ring-type joint (RTJ)
- Tongue and groove, male and female
Marking
Hard-stamped or stencilled with Teshi mark, size, class, grade, heat number, bore or schedule and standard, so every piece traces to its certificate.
Testing
- Dimensional and visual inspection
- PMI on alloy grades
- Hardness, impact (LF2), IGC (stainless) on request
- UT of forgings when your QAP calls for it
Packing
Faces protected, rust-preventive coating on carbon steel, packed in wooden cases or on pallets. Seaworthy packing for export orders.
Questions buyers ask
What sizes and classes do you make?
ASME B16.5 flanges from ½ inch to 24 inch in Class 150, 300, 600, 900, 1500 and 2500. Larger sizes are made to B16.47 or to drawing.
Do you supply flanges with bolting and gaskets?
Yes. Stud bolts and nuts come from Teshi Fasteners and gaskets can be added, so each joint arrives as a set.
Get a quotation from the manufacturer
Send your BOQ, drawing or tender reference. You deal directly with the manufacturer.
- Reply from our estimation team, usually within one working day
- Carbon steel to titanium on one order
- EN 10204 3.1 or 3.2 certificates, third-party inspection welcome
- ISO 9001:2015 certified and IBR approved, since 1971
Drawings and BOQ spreadsheets are easiest by email. Mention your project name.