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.