Flange, fitting and pipe dimensions for fabricators
B16.5 flanges, B16.9 fittings and pipe schedules for nozzles, spools and ducts, with every dimension marked on the drawing.
Flange dimensions, ASME B16.5
Pick size, class and type. The cross-section and face view update with every value.
Flange dimension finder
Every ASME B16.5 dimension for weld neck, slip-on, socket weld, threaded, lap joint and blind flanges, ½ to 24 inch, Class 150 to 2500, and ASME B16.47 Series A and B weld neck and blind flanges, 26 to 60 inch. The section redraws to scale as you change type, size and class.
Dimensions per ASME B16.5 (½ to 24 inch) and ASME B16.47 (26 to 60 inch). The raised face is not included in thickness or hub length. Matching stud bolts come from Teshi Fasteners as a set.
Butt-weld fitting dimensions, ASME B16.9
Centre-to-end, height and length with wall thickness for the schedule you choose.
Fitting dimension finder
Choose a fitting and size. The letters on the drawing show exactly what each ASME B16.9 dimension measures.
Dimensions in mm per ASME B16.9 (short stub end per MSS SP-43).
Found your size? Get a price from the manufacturer.
Send the size, class and grade. Our estimation team usually replies within one working day.
Socket weld and threaded fittings, ASME B16.11
Elbows, tees, crosses and couplings in Class 2000, 3000 and 6000, with the section drawn to scale.
Forged fitting dimension finder
ASME B16.11 socket weld and threaded elbows, tees, crosses and couplings, Class 2000, 3000 and 6000, ½ to 4 inch. The section redraws to scale for every fitting, class and size.
Dimensions in mm per ASME B16.11. Socket weld Class 9000 and threaded caps, plugs and bushings on request.
Pipe schedule and weight, ASME B36.10M / B36.19M
Wall thickness and weight per metre for carbon, stainless, duplex and nickel alloy pipe.
Pipe weight calculator
Weight from ASME B36.10M / B36.19M dimensions and material density.
Plain-end weight, calculated. Mill weights vary within the tolerance of the pipe specification.
Stud bolts and nuts for a flange joint
Number, diameter and nut size of studs for any B16.5 flange, Class 150 to 2500.
Bolt set finder
Studs and heavy hex nuts for any number of ASME B16.5 flange joints.
Stud length depends on facing and gasket thickness, so add those in your enquiry.
Dimension tables
ASME B16.5 by class, B16.47 large-diameter flanges and B16.11 forged fittings, in mm.
What the letters on the drawings mean
The same letters are used in ASME B16.5 and on our drawings.
- OOutside diameter of the flange
- TFlange thickness, without the raised face
- YLength through hub, from flange face to hub end (differs for weld neck, slip-on and lap joint)
- XHub diameter at the base of the hub
- AHub diameter at the weld point, equal to pipe OD
- BBore. Slip-on and lap joint bores are fixed; weld neck bore matches the pipe schedule
- RRaised face diameter. Raised face height is 1.6 mm (Class 150, 300) or 6.4 mm (Class 600 and above)
- WBolt circle, also called PCD (pitch circle diameter)
- CSocket bore of a socket weld flange
- DSocket depth of a socket weld flange
- TₜThread length of a threaded flange (NPT)
Questions buyers ask
Why does the length through hub change with flange type?
A weld neck flange has a long tapered hub that is butt-welded to the pipe, so its length through hub is the longest. Slip-on, socket weld and threaded flanges have a short hub, and lap joint flanges have their own length. The finder shows the right one for the type you select.
Do the thickness and hub lengths include the raised face?
No. Following ASME B16.5, thickness T and length through hub Y are given without the raised face. Add 1.6 mm for Class 150 and 300, or 6.4 mm for Class 600 and above.
What bore should a weld neck flange have?
The bore of a weld neck flange matches the inside diameter of the pipe it is welded to, so it depends on the pipe schedule. Tell us the schedule and we machine the bore to suit.
Does the finder cover flanges above 24 inch?
Yes. Choose a size from 26 to 60 inch and the finder switches to ASME B16.47, with a Series selector for Series A (MSS SP-44) and Series B (API 605), in weld neck and blind, Class 150 to 900.
Which flange types are available in Class 1500 and 2500?
B16.5 lists weld neck, lap joint and blind flanges in all sizes for Class 1500 and 2500. Slip-on and socket weld are limited to small sizes in Class 1500, and threaded to small sizes in Class 2500. Options that B16.5 does not list are greyed out in the finder.
How accurate is the weight shown?
It is calculated from the drawn geometry in carbon steel, so treat it as an estimate within a few percent. Stainless and nickel alloys weigh slightly more.
Can I get a price for the size I looked up?
Yes. Use Get a price for this or WhatsApp this size under any finder. The size, class and type go straight to our estimation team.
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.