Weld neck flanges
The tapered hub is butt-welded to the pipe, spreading stress away from the flange face.
Stainless steel flanges
ASTM A182 stainless flanges from 304L and 316L to 904L and super duplex, solution annealed and fully traceable.
Grades
| Family | ASTM A182 grades |
|---|---|
| Austenitic | A182 F304, F304L, F316, F316L, F321, F347, F310 |
| Super-austenitic | A182 F904L, F44 (254 SMO) |
| Duplex | A182 F51, F60 |
| Super duplex | A182 F53, F55 |
Flange types
Slip-on flanges
The pipe slides into the flange and is fillet-welded inside and outside.
Blind flanges
Solid flanges that close the end of a line, a nozzle or a valve, and allow later extension or inspection access..
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.
Dimensions
Flange dimension finder
Every ASME B16.5 dimension for weld neck, slip-on, socket weld, threaded, lap joint and blind flanges, Class 150 to 2500. The section redraws to scale as you change type, size and class.
Dimensions per ASME B16.5. The raised face is not included in thickness or hub length. Matching stud bolts come from Teshi Fasteners as a set.
Testing for stainless flanges
Intergranular corrosion
ASTM A262 Practice E (or as specified) for 304L, 316L and similar grades.
PMI
Positive material identification on every alloy piece when the QAP requires it.
Ferrite and A923
For duplex and super duplex, ferrite measurement and A923 tests on request.
FAQ
Questions buyers ask
Is 316L or 304L better for flanges?
316L contains molybdenum, which improves resistance to chlorides and many acids. 304L is adequate for many water and mild chemical services. Choose per your piping material class.
Request a quote
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.