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Butt-weld elbows, 90° and 45° long radius (ASME B16.9), NPS ½ to 12

Name: Butt-weld elbows, 90° and 45° long radius (ASME B16.9), NPS ½ to 12 dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What is the centre-to-end of a 90° and 45° long-radius butt-weld elbow (ASME B16.9)? · Standard part · basis: ASME B16.9 dimensions as published in manufacturer tables (SHIELD, mm; Weldbend, inch); OD and Sch 40 wall per ASME B36.10

Also called: butt weld elbow dimensions, long radius elbow center to end, 90 degree lr elbow dimensions, 45 degree elbow center to end, b16.9 elbow, weld elbow step, weld elbow stl, schedule 40 elbow

Exact dimensions. True size, with no printing tolerance added.

sizes: 15 in table

Notes

A long-radius (LR) elbow has a bend radius of 1.5 × NPS from NPS ¾ up (1½ in at NPS ½ and ¾). Centre-to-end is from the intersection of the two pipe axes to the weld end; for a 90° LR elbow it equals the bend radius.
Values are the manufacturers' published B16.9 tables (the standard's own text is paywalled): mm from SHIELD, inch from Weldbend (90° all sizes, 45° to NPS 2).
Files at NPS 1, 2 and 4, Schedule 40 hollow. The 45° elbow's bend radius is not tabulated separately: the files use the 90° LR radius and add a short straight at each end to reach the published 45° centre-to-end (tangent noted per file).
OD and Schedule 40 wall: Weldbend prints OD rounded (1.32, 2.38 in); the files use the exact ASME B36.10 OD (1.315, 2.375, 4.500 in) with the Weldbend Sch 40 wall (.133, .154, .237 in). Fittings are made to match the pipe's OD and wall.
Ends are drawn square. Real fittings are bevelled for welding to ASME B16.25; no public, citable statement of the bevel was found, so it is not drawn.

Butt-weld elbows, 90° and 45° long radius (ASME B16.9), NPS ½ to 12 size chart

NPS	OD, mm	Sch 40 wall	90° LR centre-to-end A, mm	45° LR centre-to-end B, mm
1/2	21.3 (0.84 in)	0.109 in (2.77 mm)	38 (1.50 in)	16 (0.62 in)
3/4	26.7 (1.05 in)	0.113 in (2.87 mm)	38 (1.50 in)	19 (0.75 in)
1	33.4 (1.32 in)	0.133 in (3.38 mm)	38 (1.50 in)	22 (0.88 in)
1-1/4	42.2 (1.66 in)	0.140 in (3.56 mm)	48 (1.88 in)	25 (1.00 in)
1-1/2	48.3 (1.90 in)	0.145 in (3.68 mm)	57 (2.25 in)	29 (1.12 in)
2	60.3 (2.38 in)	0.154 in (3.91 mm)	76 (3.00 in)	35 (1.38 in)
2-1/2	73.0 (2.88 in)	0.203 in (5.16 mm)	95 (3.75 in)	44
3	88.9 (3.50 in)	0.216 in (5.49 mm)	114 (4.50 in)	51
3-1/2	101.6 (4.00 in)	0.226 in (5.74 mm)	133 (5.25 in)	57
4	114.3 (4.50 in)	0.237 in (6.02 mm)	152 (6.00 in)	64
5	141.3 (5.56 in)	0.258 in (6.55 mm)	190 (7.50 in)	79
6	168.3 (6.62 in)	0.280 in (7.11 mm)	229 (9.00 in)	95
8	219.1 (8.62 in)	0.322 in (8.18 mm)	305 (12.00 in)	127
10	273.0 (10.75 in)	0.365 in (9.27 mm)	381 (15.00 in)	159
12	323.8 (12.75 in)	0.406 in (10.31 mm)	457 (18.00 in)	190

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

SHIELD (manufacturer)	Butt-welded fittings & flanges, SG-BWFF: ASME B16.9 elbows, tees, reducers (mm)	web	Publisher's page; dimensions are facts
Weldbend Corporation	Weld fitting & weld flange catalog, 63rd edition: 90° and 45° long-radius elbows, OD, STD / Sch 40 wall	web	Publisher's page; dimensions are facts

Free files

★ Free files 6 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

bw-elbow-90-lr-nps1-sch40	NPS 1 90° long-radius elbow, Sch 40: OD 33.40, ID 26.64, centre-to-end 1.50 in (38.1 mm); square ends	STEP · STL
bw-elbow-45-lr-nps1-sch40	NPS 1 45° long-radius elbow, Sch 40: OD 33.40, ID 26.64, centre-to-end 22 mm; bend radius 38.1 mm with 6.22 mm straight at each end; square ends	STEP · STL
bw-elbow-90-lr-nps2-sch40	NPS 2 90° long-radius elbow, Sch 40: OD 60.32, ID 52.50, centre-to-end 3.00 in (76.2 mm); square ends	STEP · STL
bw-elbow-45-lr-nps2-sch40	NPS 2 45° long-radius elbow, Sch 40: OD 60.32, ID 52.50, centre-to-end 35 mm; bend radius 76.2 mm with 3.44 mm straight at each end; square ends	STEP · STL
bw-elbow-90-lr-nps4-sch40	NPS 4 90° long-radius elbow, Sch 40: OD 114.30, ID 102.26, centre-to-end 6.00 in (152.4 mm); square ends	STEP · STL
bw-elbow-45-lr-nps4-sch40	NPS 4 45° long-radius elbow, Sch 40: OD 114.30, ID 102.26, centre-to-end 64 mm; bend radius 152.4 mm with 0.87 mm straight at each end; square ends	STEP · STL

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Plain text: sheet.txt · JSON: /api/geometry?object=butt-weld-elbows-long-radius