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ASME B16.9 elbow dimensions: where to find center-to-face for each fitting

In FitterMaster the B16.9 numbers are in the Takeout Chart under Reference (a Pro screen): pick a fitting and read its center-to-face or center-to-end for NPS 1/2 to 24. A 4" long-radius 90° is 6", a 4" 45° elbow is 2-1/2" and a 4" tee is 4-1/8" center to end.

3 min read · Updated 2026-09-15

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The Takeout Chart is not a formula screen, but a plain list. The header says Center-to-face / center-to-end, there is a Fitting menu on top, and below it one row per size with the value in large type. That is the whole screen, and for a lookup it is enough.

The menu holds six fittings: 90° LR Elbow, 45° Elbow, 90° SR Elbow, 180° LR Return, Tee (run / branch) and Cap. The short-radius elbow starts at NPS 1 because nothing smaller is made.

Sample rows

FitterMaster Takeout Chart values, inches (nearest 1/16")
NPS90° LR45°90° SRTeeCap
1/2"1-1/2"5/8"-1"1"
3/4"1-1/8"7/16"-1-1/8"1"
1"1-1/2"7/8"1"1-1/2"1-1/2"
2"3"1-3/8"2"2-1/2"1-1/2"
4"6"2-1/2"4"4-1/8"2-1/2"
6"9"3-3/4"6"5-5/8"3-1/2"
8"12"5"8"7"4"
12"18"7-1/2"12"10"6"

Metric mode (Pro) shows the same table in mm to the nearest 0.5: the 4" row reads 152.5, 64.0, 101.5, 104.5 and 63.5.

The 3/4" row looks like a typo and is not

The 3/4" elbow is shorter than the 1/2" one: 1-1/8" against 1-1/2" for the 90°. That is worth double-checking rather than assuming the app is wrong. B16.9 really does fix NPS 1/2 at 1-1/2" and 3/4 at 1-1/8". The 45° column has the same kink, 5/8" then 7/16".

The 45° column also does not follow the radius formula. A 4" LR cut to 45° by geometry gives 2.485", the stocked 45° elbow is 2.52". Both show as 2-1/2" at 1/16, but the gap grows on large sizes, so use the table when the fitting is a stocked one.

Example: tee to elbow, 3'-0" center to center, 4" pipe

Takeouts are 4-1/8" for the tee run and 6" for the 90° LR. With a 1/8" weld gap at each joint the pipe is 36 − 4.12 − 6.00 − 0.25 = 25.63", which reads 25-5/8".

The app has no screen that does this sum, since Offset handles offsets only. This can be done in Tape Math: Length A 3'-0", Length B 10-3/8" (the two takeouts plus both gaps), and A − B shows 2'-1-5/8".

What it does not have

  • No reducers, concentric or eccentric, no 3D or 5D bends, no stub ends, no flanges in this chart. Flange bolting is a separate screen.
  • Butt-weld carbon steel only: no threaded or socket-weld takeouts.
  • No search, no PDF, no Copy or Share on this screen. You scroll.
  • The developer typed the values in and cross-checked them; nobody certified them. Real fittings vary within tolerance, so measure the one in your hand.

The chart is part of the one-time Pro purchase. Free users still get one slice: the Offset screen at 45° long radius uses the 45° value from this table and shows it as Takeout (each) for the size you pick.

Questions and answers

What is the center-to-face of a 6 inch long radius 90 degree elbow?
9" (228.5 mm). Long radius is 1.5 × NPS, so it is 1.5 × 6; the 1/2" size is the exception at 1-1/2".
What is takeout in pipe fitting?
The distance from the fitting's center line to its welding face. Subtract it at each fitting from the center-to-center length to get the pipe to cut.
What are the B16.9 tee dimensions?
Run and branch are the same on a straight tee: 4-1/8" on 4" (4.12), 5-5/8" on 6" and 10" on 12". The chart lists both under one row.
Is the 90 degree elbow dimension in mm available?
Yes with Pro metric mode, to the nearest 0.5 mm, for example 152.5 mm for a 4" long radius 90°.
Does it cover reducers?
No. The six fittings are 90° LR and SR, 45°, 180° return, tee and cap.

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