JIS B2312 Buttweld Pipe Fittings
JIS B2312 Buttweld Pipe Fittings
JIS B2312 is a Japanese Industrial Standard (JIS) that specifies the requirements for steel and nickel-chromium ferro-alloy seamless pipe fittings that are intended for butt welding. These fittings are primarily used in pressure service piping systems, including high-pressure, high-temperature, alloy steel, stainless steel, low-temperature, and fired heater applications.
Type of JIS B2312 Buttweld Pipe Fittings
JIS B2312 Elbow
JIS B2312 Tee
JIS B2312 Reducer
JIS B2312 Coupling
JIS B2312 Buttweld Pipe Fitting
45-degree Elbow Dimensions Chart (in lbs)
| NPS | O.D. D | 90 deg LR Center-to-End A | 45 deg Long Radius Center-to-End B | 90 deg 3D Center-to-End A | 45 deg 3D Center-to-End B |
|---|---|---|---|---|---|
| 1/2 | 21.3 | 38 | 16 | – | – |
| 3/4 | 26.7 | 38 | 19 | 57 | 24 |
| 1 | 33.4 | 38 | 22 | 76 | 31 |
| 1¼ | 42.2 | 48 | 25 | 95 | 39 |
| 1½ | 48.3 | 57 | 29 | 114 | 47 |
| 2 | 60.3 | 76 | 35 | 152 | 63 |
| 2½ | 73 | 95 | 44 | 190 | 79 |
| 3 | 88.9 | 114 | 51 | 229 | 95 |
| 3½ | 101.6 | 133 | 57 | 267 | 111 |
| 4 | 114.3 | 152 | 64 | 305 | 127 |
| 5 | 141.3 | 190 | 79 | 381 | 157 |
| 6 | 168.3 | 229 | 95 | 457 | 189 |
| 8 | 219.1 | 305 | 127 | 610 | 252 |
| 10 | 273 | 381 | 159 | 762 | 316 |
| 12 | 323.8 | 457 | 190 | 914 | 378 |
| 14 | 355.6 | 533 | 222 | 1067 | 441 |
| 16 | 406.4 | 610 | 254 | 1219 | 505 |
| 18 | 457 | 686 | 286 | 1372 | 568 |
| 20 | 508 | 762 | 318 | 1524 | 632 |
| 22 | 559 | 838 | 343 | 1676 | 694 |
| 24 | 610 | 914 | 381 | 1829 | 757 |
| 26 | 660 | 991 | 406 | 1981 | 821 |
| 28 | 711 | 1067 | 438 | 2134 | 883 |
| 30 | 762 | 1143 | 470 | 2286 | 964 |
| 32 | 813 | 1219 | 502 | 2438 | 1010 |
| 34 | 864 | 1295 | 533 | 2591 | 1073 |
| 36 | 914 | 1372 | 565 | 2743 | 1135 |
| 38 | 965 | 1448 | 600 | 2896 | 1200 |
| 40 | 1016 | 1524 | 632 | 3048 | 1264 |
| 42 | 1067 | 1600 | 660 | 3200 | 1326 |
| 44 | 1118 | 1676 | 695 | 3353 | 1389 |
| 46 | 1168 | 1753 | 727 | 3505 | 1453 |
| 48 | 1219 | 1829 | 759 | 3658 | 1516 |
90 Degree Elbow Dimensions Chart (in lbs)
| Inch. | ND | millimeter | Center to center | Radius | Center to end | Back to face |
|---|---|---|---|---|---|---|
| D | O | A | B | K | ||
| 1/2 | 15 | 21,34 | 76,20 | 38,10 | 15,87 | 47,62 |
| 3/4 | 20 | 26,67 | 57,15 | 28,57 | 11,11 | 42,86 |
| 1 | 25 | 33,40 | 76,20 | 38,10 | 22,22 | 55,56 |
| 1 1/4 | 32 | 42,16 | 95,25 | 47,60 | 25,40 | 69,85 |
| 1 1/2 | 40 | 48,26 | 114,30 | 57,15 | 28,57 | 82,55 |
| 2 | 50 | 60,32 | 152,40 | 76,20 | 34,92 | 106,40 |
| 2 1/2 | 65 | 73,02 | 190,50 | 95,25 | 44,45 | 131,80 |
| 3 | 80 | 88,90 | 228,60 | 114,30 | 50,80 | 158,75 |
| 3 1/2 | 90 | 101,60 | 266,70 | 133,35 | 57,15 | 184,15 |
| 4 | 100 | 114,30 | 304,80 | 152,40 | 63,50 | 209,55 |
| 5 | 125 | 141,30 | 381,00 | 190,50 | 79,38 | 261,90 |
| 6 | 150 | 168,27 | 457,20 | 228,60 | 95,25 | 312,70 |
| 8 | 200 | 219,07 | 609,60 | 304,80 | 127,00 | 414,30 |
| 10 | 250 | 273,05 | 762,00 | 381,00 | 158,75 | 517,50 |
| 12 | 300 | 323,85 | 914,40 | 457,20 | 190,50 | 619,10 |
| 14 | 350 | 355,60 | 1066,80 | 533,40 | 222,25 | 711,20 |
| 16 | 400 | 406,40 | 1219,20 | 609,60 | 254,00 | 812,80 |
| 18 | 450 | 457,20 | 1371,60 | 685,80 | 285,74 | 914,40 |
| 20 | 500 | 508,00 | 1524,00 | 762,00 | 317,50 | 1016,00 |
| 22 | 550 | 558,80 | 1676,40 | 838,20 | 342,90 | 1117,60 |
| 24 | 600 | 609,60 | 1828,80 | 914,40 | 381,00 | 1219,20 |
| 28 | 700 | 711,20 | 2133,60 | 1066,80 | 441,90 | 1422,40 |
180 Degree Elbow Dimensions Chart (in lbs)
| Normal Pipe Size | Outside Daimeter D | ASME 180 degree Long Rad | ASME 180 degree Short Rad | ||
|---|---|---|---|---|---|
| Center to Center O | Back to Face K | Center to Center O | Back to Face K | ||
| 1/2 | 21.3 | 76 | 48 | … | … |
| 3/4 | 26.7 | 76 | 51 | … | … |
| 1 | 33.4 | 76 | 56 | 51 | 41 |
| 1.1/4 | 42.2 | 95 | 70 | 64 | 52 |
| 1.1/2 | 48.3 | 114 | 83 | 76 | 62 |
| 2 | 60.3 | 152 | 106 | 102 | 81 |
| 2.1/2 | 73 | 190 | 132 | 127 | 100 |
| 3 | 88.9 | 229 | 159 | 152 | 121 |
| 3.1/2 | 101.6 | 267 | 184 | 178 | 140 |
| 4 | 114.3 | 305 | 210 | 203 | 159 |
| 5 | 141.3 | 381 | 262 | 254 | 197 |
| 6 | 168.3 | 457 | 313 | 305 | 237 |
| 8 | 219.1 | 610 | 414 | 406 | 313 |
| 10 | 273 | 762 | 518 | 508 | 391 |
| 12 | 323.8 | 914 | 619 | 610 | 467 |
| 14 | 355.6 | 1067 | 711 | 711 | 533 |
| 16 | 406.4 | 1219 | 813 | 813 | 610 |
| 18 | 457 | 1372 | 914 | 914 | 686 |
| 20 | 508 | 1524 | 1016 | 1016 | 762 |
| 22 | 559 | 1676 | 1118 | 1118 | 838 |
| 24 | 610 | 1829 | 1219 | 1219 | 914 |
| Normal Pipe Size | Outside Daimeter D | 180 degree Long Rad | 180 degree Short Rad | ||
| Center to Center O | Back to Face K | Center to Center O | Back to Face K | ||
Straight / Equal Tee Dimensions Chart (in lbs)
| NOMINAL PIPE SIZE | OUTSIDE DIAMETER | CENTER TO END | LENGTH |
|---|---|---|---|
| Inch. | OD | C | M |
| 1/2 | 21.3 | 25 | 25 |
| 3/4 | 26.7 | 29 | 29 |
| 1 | 33.4 | 38 | 38 |
| 1 1/4 | 42.2 | 48 | 48 |
| 1 1/2 | 48.3 | 57 | 57 |
| 2 | 60.3 | 64 | 64 |
| 2 1/2 | 73 | 76 | 76 |
| 3 | 88.9 | 86 | 86 |
| 3 1/2 | 101.6 | 95 | 95 |
| 4 | 114.3 | 105 | 105 |
| 5 | 141.3 | 124 | 124 |
| 6 | 168.3 | 143 | 143 |
| 8 | 219.1 | 178 | 178 |
| 10 | 273.1 | 216 | 216 |
| 12 | 323.9 | 254 | 254 |
| 14 | 355.6 | 279 | 279 |
| 16 | 406.4 | 305 | 305 |
| 18 | 457.2 | 343 | 343 |
| 20 | 508 | 381 | 381 |
| 22 | 559 | 419 | 419 |
| 24 | 610 | 432 | 432 |
| 26 | 660 | 495 | 495 |
| 28 | 711 | 521 | 521 |
| 30 | 762 | 559 | 559 |
| 32 | 813 | 597 | 597 |
| 34 | 864 | 635 | 635 |
| 36 | 914 | 673 | 673 |
| 38 | 965 | 711 | 711 |
| 40 | 1016 | 749 | 749 |
| 42 | 1067 | 762 | 711 |
| 44 | 1118 | 813 | 762 |
| 46 | 1168 | 851 | 800 |
| 48 | 1219 | 889 | 838 |
Reducing Tee Dimensions Chart (in lbs)
| NOMINAL PIPE SIZE | OUTSIDE DIAMETER | CENTER TO END | ||
|---|---|---|---|---|
| Inch | D | P | C | M |
| 1/2 x 3/8 | 21.3 | 17.1 | 25 | 25 |
| 1/2 x 1/4 | 21.3 | 13.7 | 25 | 25 |
| 3/4 x 1/2 | 26.7 | 21.3 | 29 | 29 |
| 3/4 x 3/8 | 26.7 | 17.1 | 29 | 29 |
| 1 x 3/4 | 33.4 | 26.7 | 38 | 38 |
| 1 x 1/2 | 33.4 | 21.3 | 38 | 38 |
| 1 1/4 x 1 | 42.2 | 33.4 | 48 | 48 |
| 1 1/4 x 3/4 | 42.2 | 26.7 | 48 | 48 |
| 1 1/4 x 1/2 | 42.2 | 21.3 | 48 | 48 |
| 1 1/2 x 1 1/2 | 48.3 | 42.2 | 57 | 57 |
| 1 1/2 x 1 | 48.3 | 33.4 | 57 | 57 |
| 1 1/2 x 3/4 | 48.3 | 26.7 | 57 | 57 |
| 1 1/2 x 1/2 | 48.3 | 21.3 | 57 | 57 |
| 2 x 1 1/2 | 60.3 | 48.2 | 64 | 60 |
| 2 x 1 1/4 | 60.3 | 42.2 | 64 | 57 |
| 2 x 1 | 60.3 | 33.4 | 64 | 51 |
| 2 x 3/4 | 60.3 | 26.7 | 64 | 44 |
| 2 1/2 x 2 | 73 | 60.3 | 76 | 70 |
| 2 1/2 x 1 1/2 | 73 | 48.3 | 76 | 67 |
| 2 1/2 x 1 1/4 | 73 | 42.2 | 76 | 64 |
| 2 1/2 x 1 | 73 | 33.4 | 76 | 57 |
| 3 x 2 1/2 | 88.9 | 73 | 86 | 83 |
| 3 x 2 | 88.9 | 60.3 | 86 | 76 |
| 3 x 1 1/2 | 88.9 | 48.3 | 86 | 73 |
| 3 x 1 1/4 | 88.9 | 42.2 | 86 | 70 |
| 3 1/2 x 3 | 101.6 | 88.9 | 95 | 92 |
| 3 1/2 x 21/2 | 101.6 | 73 | 95 | 89 |
| 3 1/2 x 2 | 101.6 | 60.3 | 95 | 83 |
| 3 1/2 x 1 1/2 | 101.6 | 48.3 | 95 | 79 |
| 4 x 3 1/2 | 114.3 | 101.6 | 105 | 102 |
| 4 x 3 | 114.3 | 88.9 | 105 | 98 |
| 4 x 2 1/2 | 114.3 | 73 | 105 | 95 |
| 4 x 2 | 114.3 | 60.3 | 105 | 89 |
| 4 x 1 1/2 | 114.3 | 48.3 | 105 | 86 |
| 5 x 4 | 141.3 | 114.3 | 124 | 117 |
| 5 x 3 1/2 | 141.3 | 101.6 | 124 | 114 |
| 5 x 3 | 141.3 | 88.9 | 124 | 111 |
| 5 x 2 1/2 | 141.3 | 73 | 124 | 108 |
| 5 x 2 | 141.3 | 60.3 | 124 | 105 |
| 6 x 5 | 168.3 | 141.3 | 143 | 137 |
| 6 x 4 | 168.3 | 114.3 | 143 | 130 |
| 6 x 3 1/2 | 168.3 | 101.6 | 143 | 127 |
| 6 x 3 | 168.3 | 88.9 | 143 | 124 |
| 6 x 2 1/2 | 168.3 | 73 | 143 | 121 |
| 8 x 6 | 219.1 | 168.3 | 178 | 168 |
| 8 x 5 | 219.1 | 141.3 | 178 | 162 |
| 8 x 4 | 219.1 | 114.3 | 178 | 156 |
| 8 x 3 1/2 | 219.1 | 101.6 | 178 | 152 |
| 10 x 8 | 273.1 | 219.1 | 216 | 203 |
| 10 x 6 | 273.1 | 168.1 | 216 | 194 |
| 10 x 5 | 273.1 | 141.3 | 216 | 191 |
| 10 x 4 | 273.1 | 114.3 | 216 | 184 |
| 12 x 10 | 323.9 | 273.1 | 254 | 241 |
| 12 x 8 | 323.9 | 219.1 | 254 | 229 |
| 12 x 6 | 323.9 | 168.3 | 254 | 219 |
| 12 x 5 | 323.9 | 141.3 | 254 | 216 |
| 14 x 12 | 355.6 | 323.9 | 279 | 270 |
| 14 x 10 | 355.6 | 273.1 | 279 | 257 |
| 14 x 8 | 355.6 | 219.1 | 279 | 248 |
| 14 x 6 | 355.6 | 168.3 | 279 | 238 |
| 16 x 14 | 406.4 | 355.6 | 305 | 305 |
| 16 x 12 | 406.4 | 323.9 | 305 | 295 |
| 16 x 10 | 406.4 | 273.1 | 305 | 283 |
| 16 x 8 | 406.4 | 219.1 | 305 | 273 |
| 16 x 6 | 406.4 | 168.3 | 305 | 264 |
| 18 x 16 | 457 | 406.4 | 343 | 330 |
| 18 x 14 | 457 | 355.6 | 343 | 330 |
| 18 x 12 | 457 | 323.9 | 343 | 321 |
| 18 x 10 | 457 | 273.1 | 343 | 308 |
| 18 x 8 | 457 | 219.1 | 343 | 298 |
| 20 x 18 | 508 | 457 | 381 | 368 |
| 20 x 16 | 508 | 406.4 | 381 | 356 |
| 20 x 14 | 508 | 355.6 | 381 | 356 |
| 20 x 12 | 508 | 323.9 | 381 | 346 |
| 20 x 10 | 508 | 273.1 | 381 | 333 |
| 20 x 8 | 508 | 219.1 | 381 | 324 |
| 22 x 20 | 559 | 508 | 419 | 406 |
| 22 x 18 | 559 | 457 | 419 | 394 |
| 22 x 16 | 559 | 406.4 | 419 | 381 |
| 22 x 14 | 559 | 355.6 | 419 | 381 |
| 22 x 12 | 559 | 323.9 | 419 | 371 |
| 24 x 10 | 559 | 273.1 | 419 | 359 |
| 24 x 22 | 610 | 559 | 432 | 432 |
| 24 x 20 | 610 | 508 | 432 | 432 |
| 24 x 18 | 610 | 457 | 432 | 419 |
| 24 x 16 | 610 | 406.4 | 432 | 406 |
| 24 x 14 | 610 | 355.6 | 432 | 406 |
| 24 x 12 | 610 | 323.9 | 432 | 397 |
| 24 x 10 | 610 | 273.1 | 432 | 384 |
Concentric and Eccentric Reducer Dimensions Chart (in lbs)
| NOMINAL PIPE SIZE | OUTSIDE DIAMETER | END TO END | |
|---|---|---|---|
| Inch | D | P | H |
| 3/4 x 1/2 | 26.7 | 21.3 | 38 |
| 3/4 x 3/8 | 26.7 | 17.1 | 38 |
| 1 x 3/4 | 33.4 | 26.7 | 51 |
| 1 x 1/2 | 33.4 | 21.3 | 51 |
| 1 1/4 x 1 | 42.2 | 33.4 | 51 |
| 1 1/4 x 3/4 | 42.2 | 26.7 | 51 |
| 1 1/4 x 1/2 | 42.2 | 21.3 | 51 |
| 1 1/2 x 1 1/2 | 48.3 | 42.2 | 64 |
| 1 1/2 x 1 | 48.3 | 33.4 | 64 |
| 1 1/2 x 3/4 | 48.3 | 26.7 | 64 |
| 1 1/2 x 1/2 | 48.3 | 21.3 | 64 |
| 2 x 1 1/2 | 60.3 | 48.2 | 76 |
| 2 x 1 1/4 | 60.3 | 42.2 | 76 |
| 2 x 1 | 60.3 | 33.4 | 76 |
| 2 x 3/4 | 60.3 | 26.7 | 76 |
| 2 1/2 x 2 | 73 | 60.3 | 89 |
| 2 1/2 x 1 1/2 | 73 | 48.3 | 89 |
| 2 1/2 x 1 1/4 | 73 | 42.2 | 89 |
| 2 1/2 x 1 | 73 | 33.4 | 89 |
| 3 x 2 1/2 | 88.9 | 73 | 89 |
| 3 x 2 | 88.9 | 60.3 | 89 |
| 3 x 1 1/2 | 88.9 | 48.3 | 89 |
| 3 x 1 1/4 | 88.9 | 42.2 | 89 |
| 3 1/2 x 3 | 101.6 | 88.9 | 102 |
| 3 1/2 x 21/2 | 101.6 | 73 | 102 |
| 3 1/2 x 2 | 101.6 | 60.3 | 102 |
| 3 1/2 x 1 1/2 | 101.6 | 48.3 | 102 |
| 3 1/2 x 1 1/4 | 101.6 | 42.2 | 102 |
| 4 x 3 1/2 | 114.3 | 101.6 | 102 |
| 4 x 3 | 114.3 | 88.9 | 102 |
| 4 x 2 1/2 | 114.3 | 73 | 102 |
| 4 x 2 | 114.3 | 60.3 | 102 |
| 4 x 1 1/2 | 114.3 | 48.3 | 102 |
| 5 x 4 | 141.3 | 114.3 | 127 |
| 5 x 3 1/2 | 141.3 | 101.6 | 127 |
| 5 x 3 | 141.3 | 88.9 | 127 |
| 5 x 2 1/2 | 141.3 | 73 | 127 |
| 5 x 2 | 141.3 | 60.3 | 127 |
| 6 x 5 | 168.3 | 141.3 | 140 |
| 6 x 4 | 168.3 | 114.3 | 140 |
| 6 x 3 1/2 | 168.3 | 101.6 | 140 |
| 6 x 3 | 168.3 | 88.9 | 140 |
| 6 x 2 1/2 | 168.3 | 73 | 140 |
| 8 x 6 | 219.1 | 168.3 | 152 |
| 8 x 5 | 219.1 | 141.3 | 152 |
| 8 x 4 | 219.1 | 114.3 | 152 |
| 8 x 3 1/2 | 219.1 | 101.6 | 152 |
| 10 x 8 | 273.1 | 219.1 | 178 |
| 10 x 6 | 273.1 | 168.1 | 178 |
| 10 x 5 | 273.1 | 141.3 | 178 |
| 10 x 4 | 273.1 | 114.3 | 178 |
| 12 x 10 | 323.9 | 273.1 | 203 |
| 12 x 8 | 323.9 | 219.1 | 203 |
| 12 x 6 | 323.9 | 168.3 | 203 |
| 12 x 5 | 323.9 | 141.3 | 203 |
| 14 x 12 | 355.6 | 323.9 | 330 |
| 14 x 10 | 355.6 | 273.1 | 330 |
| 14 x 8 | 355.6 | 219.1 | 330 |
| 14 x 6 | 355.6 | 168.3 | 330 |
| 16 x 14 | 406.4 | 355.6 | 356 |
| 16 x 12 | 406.4 | 323.9 | 356 |
| 16 x 10 | 406.4 | 273.1 | 356 |
| 16 x 8 | 406.4 | 219.1 | 356 |
| 16 x 6 | 406.4 | 168.3 | 356 |
| 18 x 16 | 457 | 406.4 | 381 |
| 18 x 14 | 457 | 355.6 | 381 |
| 18 x 12 | 457 | 323.9 | 381 |
| 18 x 10 | 457 | 273.1 | 381 |
| 18 x 8 | 457 | 219.1 | 381 |
| 20 x 18 | 508 | 457 | 508 |
| 20 x 16 | 508 | 406.4 | 508 |
| 20 x 14 | 508 | 355.6 | 508 |
| 20 x 12 | 508 | 323.9 | 508 |
| 20 x 10 | 508 | 273.1 | 508 |
| 20 x 8 | 508 | 219.1 | 508 |
| 22 x 20 | 559 | 508 | 508 |
| 22 x 18 | 559 | 457 | 508 |
| 22 x 16 | 559 | 406.4 | 508 |
| 22 x 14 | 559 | 355.6 | 508 |
| 22 x 12 | 559 | 323.9 | 508 |
| 24 x 10 | 559 | 273.1 | 508 |
| 24 x 22 | 610 | 559 | 508 |
| 24 x 20 | 610 | 508 | 508 |
| 24 x 18 | 610 | 457 | 508 |
| 24 x 16 | 610 | 406.4 | 508 |
| 24 x 14 | 610 | 355.6 | 508 |
| 24 x 12 | 610 | 323.9 | 508 |
| 24 x 10 | 610 | 273.1 | 508 |
End Cap Dimension Chart (in lbs)
| Inch. | MM | Height | |
|---|---|---|---|
| D | E | ||
| 1/2 | 15 | 21,34 | 25,40 |
| 3/4 | 20 | 26,67 | 31,75 |
| 25 | 33,40 | 38,10 | |
| 1 1/4 | 32 | 42,16 | 38,10 |
| 1 1/2 | 40 | 48,26 | 38,10 |
| 2 | 50 | 60,32 | 38,10 |
| 2 1/2 | 65 | 73,02 | 38,10 |
| 3 | 80 | 88,90 | 50,80 |
| 3 1/2 | 90 | 101,60 | 63,50 |
| 4 | 100 | 114,30 | 63,50 |
| 5 | 125 | 141,30 | 76,20 |
| 6 | 150 | 168,27 | 88,90 |
| 8 | 200 | 219,07 | 101,60 |
| 10 | 250 | 273,05 | 127,00 |
| 12 | 300 | 323,85 | 152,40 |
| 14 | 350 | 355,60 | 165,10 |
| 16 | 400 | 406,40 | 177,80 |
| 18 | 450 | 457,20 | 203,20 |
| 20 | 500 | 508,00 | 228,60 |
| 22 | 550 | 558,80 | 254,00 |
| 24 | 600 | 609,60 | 266,70 |
| 28 | 700 | 711,20 | 266,70 |
Stub End Dimensions Chart (in lbs)
| NOMINAL PIPE SIZE | LAP DIAMETER | OUTSIDE DIAMETER | LONG PATTERN LENGTH | SHORT PATTERN LENGTH | RADIUS | |
|---|---|---|---|---|---|---|
| Inch. | A | OD Min | OD Max | L | L | R |
| 1/2 | 35 | 22.8 | 20.5 | 76 | 51 | 3 |
| 3/4 | 43 | 28.1 | 25.9 | 76 | 51 | 3 |
| 1 | 51 | 35 | 32.6 | 102 | 51 | 3 |
| 1 1/4 | 64 | 43.6 | 41.4 | 102 | 51 | 5 |
| 1 1/2 | 73 | 49.9 | 47.5 | 102 | 51 | 6 |
| 2 | 92 | 62.4 | 59.5 | 152 | 64 | 8 |
| 2 1/2 | 105 | 75.3 | 72.2 | 152 | 64 | 8 |
| 3 | 127 | 91.3 | 88.1 | 152 | 64 | 10 |
| 3 1/2 | 140 | 104 | 100.8 | 152 | 76 | 10 |
| 4 | 157 | 116.7 | 113.5 | 152 | 76 | 11 |
| 5 | 186 | 144.3 | 140.5 | 203 | 76 | 11 |
| 6 | 216 | 171.3 | 167.5 | 203 | 89 | 13 |
| 8 | 270 | 222.1 | 218.3 | 203 | 102 | 13 |
| 10 | 324 | 277.2 | 272.3 | 254 | 127 | 13 |
| 12 | 381 | 328 | 323.1 | 254 | 152 | 13 |
| 14 | 413 | 359.9 | 354.8 | 305 | 152 | 13 |
| 16 | 470 | 411 | 405.6 | 305 | 152 | 13 |
| 18 | 533 | 462 | 456 | 305 | 152 | 13 |
| 20 | 584 | 514 | 507 | 305 | 152 | 13 |
| 22 | 641 | 565 | 558 | 305 | 152 | 13 |
| 24 | 692 | 616 | 609 | 305 | 152 | 13 |
Material
- S15C: A low-carbon steel, often used for general mechanical components.
- S45C: A medium-carbon steel with higher tensile strength, commonly used in machinery parts like shafts, gears, and bolts.
- S55C: A higher-carbon steel for parts that need better wear resistance and strength.
Tolarance
- General Tolerances: JIS B2312 defines the permissible limits of linear dimensions, such as lengths, widths, heights, and diameters, on technical drawings.
- Classes of Tolerances: The standard usually provides different classes of tolerances based on the size of the part being manufactured and the degree of precision required.
- Tolerance Grades: The JIS B2312 includes different grades to specify the allowable deviation in dimensions. These grades help to categorize parts based on the precision needed.
Pressure Classes
- Class 5 – This typically corresponds to low-pressure systems.
- Class 10 – This class is used for slightly higher pressure systems.
- Class 16 – Used for moderate-pressure systems.
- Class 20 – Higher pressure systems.
- Class 30, Class 40 – These are used for higher-pressure applications.
- Class 63, Class 100, etc. – These higher numbers correspond to very high-pressure applications.
Appliaction
1. Water Treatment and Distribution
2. Oil and Gas Industry
3. Chemical and Petrochemical Plants
4. Power Generation (Steam and Hydraulic Systems)
5. Food and Beverage Industry
6. HVAC Systems
7. Shipbuilding and Marine Applications
8. Pulp and Paper Industry
9. Pharmaceutical Industry
10. Mining Industry
