Lap Joint – Short, Buttweld, ANSI, WCS (in)
- Dimensions per ANSI/ASME B16.9.
- T = Pipe wall and lap thickness.
- A lap joint is useful when the alignment of bolt holes is difficult, as when spools are to be attached to flanged nozzles of vessels.
PipeSize
(NPS) |
M |
N |
PSTD |
PXS |
R |
1/2 |
2 |
1 3/8 |
0.109 |
0.147 |
1/8 |
3/4 |
2 |
1 11/16 |
0.113 |
0.154 |
1/8 |
1 |
2 |
2 |
0.133 |
0.179 |
1/8 |
1 1/4 |
2 |
2 1/2 |
0.140 |
0.191 |
3/16 |
1 1/2 |
2 |
2 7/8 |
0.145 |
0.200 |
1/4 |
2 |
2 1/2 |
3 5/8 |
0.154 |
0.218 |
5/16 |
2 1/2 |
2 1/2 |
4 1/8 |
0.203 |
0.276 |
5/16 |
3 |
2 1/2 |
5 |
0.216 |
0.300 |
3/8 |
3 1/2 |
3 |
5 1/2 |
0.226 |
0.318 |
3/8 |
4 |
3 |
6 3/16 |
0.237 |
0.337 |
7/16 |
5 |
3 |
7 5/16 |
0.258 |
0.375 |
7/16 |
6 |
3 1/2 |
8 1/2 |
0.280 |
0.432 |
1/2 |
8 |
4 |
10 5/8 |
0.322 |
0.500 |
1/2 |
10 |
5 |
12 3/4 |
0.365 |
0.500 |
1/2 |
12 |
6 |
15 |
0.375 |
0.500 |
1/2 |
14 |
6 |
16 1/4 |
0.375 |
0.500 |
1/2 |
16 |
6 |
18 1/2 |
0.375 |
0.500 |
1/2 |
18 |
6 |
21 |
0.375 |
0.500 |
1/2 |
20 |
6 |
23 |
0.375 |
0.500 |
1/2 |
22 |
6 |
25 1/4 |
0.375 |
0.500 |
1/2 |
24 |
6 |
27 1/4 |
0.375 |
0.500 |
1/2 |