BUTTWELD FITTINGS TYPES – 180° Return Bends – Short Radius STD

Standard Short Radius 180° Return Bends
Pipe Size Outside Diameter O.D. Inside Diameter I.D. Wall Thickness T Center to Center O Back to Face K Pipe Schedule Number Approx. Weight in Pounds
1 1.315 1.049 0.133 2 1 5/8 40 0.50
1 1/4 1.660 1.380 0.140 2 1/2 2 1/16 40 0.80
1 1/2 1.900 1.610 0.145 3 2 7/16 40 1.1
2 2.375 2.067 0.154 4 3 3/16 40 1.9
2 1/2 2.875 2.469 0.203 5 3 15/16 40 4.0
3 3.500 3.068 0.216 6 4 3/4 40 6.0
3 1/2 4.000 3.548 0.226 7 5 1/2 40 8.7
4 4.500 4.026 0.237 8 6 1/4 40 12.2
5 5.563 5.047 0.258 10 7 3/4 40 19.2
6 6.625 6.065 0.280 12 9 5/16 40 32.9
8 8.625 7.981 0.322 16 12 5/16 40 64.9
10 10.750 10.020 0.365 20 15 3/8 40 112.0
12 12.750 12.000 0.375 24 18 3/8 * 157.0
14 14.000 13.250 0.375 28 21 30 208.0
16 16.000 15.250 0.375 32 24 30 257.0
18 18.000 17.250 0.375 36 27 * 325.0
20 20.000 19.250 0.375 40 30 20 416.0
24 24.000 23.250 0.375 48 36 20 592.0

1. Conforms to ASME B16.9 & ASTM A234 WPB.
2. All dimensions are in inches.
3. All weights are in pounds and approximated or estimated
* This size thickness does not correspond to any pipe schedule number.