JIS B2311
| Item |
Type of pipe fittings |
Nominal diameter |
| A |
15~65 |
80~100 |
125~200 |
250~450 |
500~600 |
650~750 |
800~1200 |
| B |
½~2½ |
3~4 |
5~8 |
10~18 |
20~24 |
26~30 |
32~48 |
| tolerance |
| Out diameter at end |
All types of pipe fittings |
±2.0 |
±2.5 |
±3.5 |
5.0 -4.5 |
6.4 -4.8 |
| Inside diameter at end face |
±4.5 |
±4.8 |
| Wall thickness |
not specified -15% |
| Bevel angle |
See figure "shape and dimensions of bevel end" on page 33 |
| Height of root face |
| Dimension from center line to end face (H,F) |
45eblows,90eblows |
±2.0 |
±3.2 |
±4.8 |
| Centerline dimension(P) |
180eblows |
±6.4 |
±9.5 |
- |
| Dimension from back to end face (K) |
±6.4 |
- |
| Alignment of end face (U)(max.) |
1.6 |
3.2 |
- |
| Overall length(H) |
Reducers |
±2.0 |
±3.2 |
±4.8 |
| Dimension from center line to end face (C,M) |
Tees |
±3.2 |
- |
| Dimension from back to end face (E) |
Caps |
±3.2 |
±6.4 |
- |
| Out peripheral length at end |
All types of pipe fittings |
- |
±0.5% |
Remarks:
1. For the dimensional tolerances for H of reducer and M of reduced tee, the tolerances specified for the larger diameter side shall
2. For the galvanized part of white pipe fittings, the above-mentioned tolerance shall be applicable galvanizing.
JIS B2311
| Item |
Type of pipe fittings |
Nominal diameter |
| A |
15~100 |
125~200 |
250~300 |
350~400 |
450~600 |
650~750 |
800~1050 |
1100~1200 |
| B |
½~4 |
5~8 |
10~12 |
14~16 |
18~24 |
26~30 |
32~42 |
44~48 |
| tolerance |
| Off angle (X) |
Elbows, reducers, tees |
0.8 |
1.6 |
2.4 |
3.2 |
4.8 |
| Off plane (Y) |
Elbows, tees |
1.6 |
3.2 |
4.8 |
6.4 |
9.5 |
12.7 |
19.1 |
Remarks:
1. For the dimensional tolerances for H of reducer and M of reduced tee, the tolerances specified for the larger diameter side shall
2. For the galvanized part of white pipe fittings, the above-mentioned tolerance shall be applicable galvanizing. |
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