ASME B16.5 盲板法兰：各压力等级的尺寸和重量
无中心孔的圆盘，用于封闭管线、接管和容器的端部，也用作水压试验接口和预留扩展口。
标准ASME B16.5-2020
压力等级150, 300, 400, 600, 900, 1,500, 2,500
150 级规格范围NPS ½ 至 24
单位毫米、千克；孔和螺栓为英寸
按压力等级列出的尺寸
选择压力等级并点击某一行：图形会切换为该口径的比例和尺寸。
| NPS | DN | O | tf | R | W | 孔数 | 孔 Ø | 螺栓 Ø | 重量* |
|---|---|---|---|---|---|---|---|---|---|
| ½" | 15 | 89 | 9.7 | 35.1 | 60.5 | 4 | ⅝" | ½" | 0.4 |
| ¾" | 20 | 99 | 11.2 | 42.9 | 69.8 | 4 | ⅝" | ½" | 0.6 |
| 1" | 25 | 108 | 12.7 | 50.8 | 79.2 | 4 | ⅝" | ½" | 0.9 |
| 1¼" | 32 | 117 | 14.2 | 63.5 | 88.9 | 4 | ⅝" | ½" | 1.1 |
| 1½" | 40 | 127 | 15.9 | 73 | 98.6 | 4 | ⅝" | ½" | 1.5 |
| 2" | 50 | 152 | 17.5 | 91.9 | 120.6 | 4 | ¾" | ⅝" | 2.4 |
| 2½" | 65 | 178 | 20.6 | 104.6 | 139.7 | 4 | ¾" | ⅝" | 3.9 |
| 3" | 80 | 190 | 22.4 | 127 | 152.4 | 4 | ¾" | ⅝" | 4.9 |
| 3½" | 90 | 216 | 22.4 | 139.7 | 177.8 | 8 | ¾" | ⅝" | 6.2 |
| 4" | 100 | 229 | 22.4 | 157.2 | 190.5 | 8 | ¾" | ⅝" | 7.1 |
| 5" | 125 | 254 | 22.4 | 185.7 | 215.9 | 8 | ⅞" | ¾" | 8.7 |
| 6" | 150 | 279 | 23.9 | 215.9 | 241.3 | 8 | ⅞" | ¾" | 11.3 |
| 8" | 200 | 343 | 26.9 | 269.7 | 298.4 | 8 | ⅞" | ¾" | 19.6 |
| 10" | 250 | 406 | 28.4 | 323.8 | 362.0 | 12 | 1" | ⅞" | 28.5 |
| 12" | 300 | 483 | 30.2 | 381 | 431.8 | 12 | 1" | ⅞" | 43.4 |
| 14" | 350 | 533 | 33.3 | 412.8 | 476.2 | 12 | 1⅛" | 1" | 58 |
| 16" | 400 | 597 | 35.1 | 469.9 | 539.8 | 16 | 1⅛" | 1" | 76.5 |
| 18" | 450 | 635 | 38.1 | 533.4 | 577.8 | 16 | 1¼" | 1⅛" | 93.7 |
| 20" | 500 | 698.5 | 41.1 | 584.2 | 635.0 | 20 | 1¼" | 1⅛" | 120 |
| 22" | 550 | 749 | 44.4 | 641.4 | 692.2 | 20 | 1⅜" | 1¼" | 151 |
| 24" | 600 | 813 | 46.0 | 692.2 | 749.3 | 20 | 1⅜" | 1¼" | 185.3 |
| NPS | DN | O | tf | R | W | 孔数 | 孔 Ø | 螺栓 Ø | 重量* |
|---|---|---|---|---|---|---|---|---|---|
| ½" | 15 | 95 | 12.7 | 35.1 | 66.5 | 4 | ⅝" | ½" | 0.6 |
| ¾" | 20 | 117 | 14.2 | 42.9 | 82.6 | 4 | ¾" | ⅝" | 1.1 |
| 1" | 25 | 124 | 15.7 | 50.8 | 88.9 | 4 | ¾" | ⅝" | 1.4 |
| 1¼" | 32 | 133 | 17.5 | 63.5 | 98.6 | 4 | ¾" | ⅝" | 1.8 |
| 1½" | 40 | 155 | 19.0 | 73 | 114.3 | 4 | ⅞" | ¾" | 2.6 |
| 2" | 50 | 165 | 20.6 | 91.9 | 127.0 | 8 | ¾" | ⅝" | 3.2 |
| 2½" | 65 | 190 | 23.9 | 104.6 | 149.4 | 8 | ⅞" | ¾" | 4.8 |
| 3" | 80 | 210 | 26.9 | 127 | 168.1 | 8 | ⅞" | ¾" | 6.8 |
| 3½" | 90 | 229 | 28.4 | 139.7 | 184.2 | 8 | ⅞" | ¾" | 8.7 |
| 4" | 100 | 254 | 30.2 | 157.2 | 200.2 | 8 | ⅞" | ¾" | 11.5 |
| 5" | 125 | 279 | 33.3 | 185.7 | 235.0 | 8 | ⅞" | ¾" | 15.5 |
| 6" | 150 | 318 | 35.1 | 215.9 | 269.7 | 12 | ⅞" | ¾" | 21.1 |
| 8" | 200 | 381 | 39.6 | 269.7 | 330.2 | 12 | 1" | ⅞" | 34.3 |
| 10" | 250 | 444 | 46.0 | 323.8 | 387.4 | 16 | 1⅛" | 1" | 53.2 |
| 12" | 300 | 521 | 49.3 | 381 | 450.8 | 16 | 1¼" | 1⅛" | 79 |
| 14" | 350 | 584 | 52.3 | 412.8 | 514.4 | 20 | 1¼" | 1⅛" | 105.2 |
| 16" | 400 | 648 | 55.6 | 469.9 | 571.5 | 20 | 1⅜" | 1¼" | 137.8 |
| 18" | 450 | 711 | 58.7 | 533.4 | 628.6 | 24 | 1⅜" | 1¼" | 175.2 |
| 20" | 500 | 775 | 62.0 | 584.2 | 685.8 | 24 | 1⅜" | 1¼" | 221.8 |
| 22" | 550 | 838 | 65.0 | 641.4 | 743.0 | 24 | 1⅝" | 1½" | 269.1 |
| 24" | 600 | 914 | 68.3 | 692.2 | 812.8 | 24 | 1⅝" | 1½" | 339.3 |
NPS 3½ 以内，400 级采用与 600 级相同的尺寸（标有“= 600”的行）。
| NPS | DN | O | tf | R | W | 孔数 | 孔 Ø | 螺栓 Ø | 重量* |
|---|---|---|---|---|---|---|---|---|---|
| ½" = 600 | 15 | 95 | 14.2 | 35.1 | 66.5 | 4 | ⅝" | ½" | 0.8 |
| ¾" = 600 | 20 | 117 | 15.7 | 42.9 | 82.6 | 4 | ¾" | ⅝" | 1.3 |
| 1" = 600 | 25 | 124 | 17.5 | 50.8 | 88.9 | 4 | ¾" | ⅝" | 1.6 |
| 1¼" = 600 | 32 | 133 | 20.6 | 63.5 | 98.6 | 4 | ¾" | ⅝" | 2.2 |
| 1½" = 600 | 40 | 155 | 22.4 | 73 | 114.3 | 4 | ⅞" | ¾" | 3.3 |
| 2" = 600 | 50 | 165 | 25.4 | 91.9 | 127.0 | 8 | ¾" | ⅝" | 4.1 |
| 2½" = 600 | 65 | 190 | 28.4 | 104.6 | 149.4 | 8 | ⅞" | ¾" | 6.1 |
| 3" = 600 | 80 | 210 | 31.8 | 127 | 168.1 | 8 | ⅞" | ¾" | 8.5 |
| 3½" = 600 | 90 | 229 | 35.1 | 139.7 | 184.2 | 8 | 1" | ⅞" | 11 |
| 4" | 100 | 254 | 35.1 | 157.2 | 200.2 | 8 | 1" | ⅞" | 13.8 |
| 5" | 125 | 279 | 38.1 | 185.7 | 235.0 | 8 | 1" | ⅞" | 18.4 |
| 6" | 150 | 318 | 41.1 | 215.9 | 269.7 | 12 | 1" | ⅞" | 25.5 |
| 8" | 200 | 381 | 47.8 | 269.7 | 330.2 | 12 | 1⅛" | 1" | 42.8 |
| 10" | 250 | 444 | 53.8 | 323.8 | 387.4 | 16 | 1¼" | 1⅛" | 64.2 |
| 12" | 300 | 521 | 57.2 | 381 | 450.8 | 16 | 1⅜" | 1¼" | 94.6 |
| 14" | 350 | 584 | 60.5 | 412.8 | 514.4 | 20 | 1⅜" | 1¼" | 124.8 |
| 16" | 400 | 648 | 63.5 | 469.9 | 571.5 | 20 | 1½" | 1⅜" | 161.7 |
| 18" | 450 | 711 | 66.5 | 533.4 | 628.6 | 24 | 1½" | 1⅜" | 204.2 |
| 20" | 500 | 775 | 69.8 | 584.2 | 685.8 | 24 | 1⅝" | 1½" | 254.3 |
| 22" | 550 | 838 | 73.2 | 641.4 | 743.0 | 24 | 1¾" | 1⅝" | 311.8 |
| 24" | 600 | 914 | 76.2 | 692.2 | 812.8 | 24 | 1⅞" | 1¾" | 385.8 |
| NPS | DN | O | tf | R | W | 孔数 | 孔 Ø | 螺栓 Ø | 重量* |
|---|---|---|---|---|---|---|---|---|---|
| ½" | 15 | 95 | 14.2 | 35.1 | 66.5 | 4 | ⅝" | ½" | 0.8 |
| ¾" | 20 | 117 | 15.7 | 42.9 | 82.6 | 4 | ¾" | ⅝" | 1.3 |
| 1" | 25 | 124 | 17.5 | 50.8 | 88.9 | 4 | ¾" | ⅝" | 1.6 |
| 1¼" | 32 | 133 | 20.6 | 63.5 | 98.6 | 4 | ¾" | ⅝" | 2.2 |
| 1½" | 40 | 155 | 22.4 | 73 | 114.3 | 4 | ⅞" | ¾" | 3.3 |
| 2" | 50 | 165 | 25.4 | 91.9 | 127.0 | 8 | ¾" | ⅝" | 4.1 |
| 2½" | 65 | 190 | 28.4 | 104.6 | 149.4 | 8 | ⅞" | ¾" | 6.1 |
| 3" | 80 | 210 | 31.8 | 127 | 168.1 | 8 | ⅞" | ¾" | 8.5 |
| 3½" | 90 | 229 | 35.1 | 139.7 | 184.2 | 8 | 1" | ⅞" | 11 |
| 4" | 100 | 273 | 38.1 | 157.2 | 215.9 | 8 | 1" | ⅞" | 17.3 |
| 5" | 125 | 330 | 44.4 | 185.7 | 266.7 | 8 | 1⅛" | 1" | 29.4 |
| 6" | 150 | 356 | 47.8 | 215.9 | 292.1 | 12 | 1⅛" | 1" | 36.3 |
| 8" | 200 | 419 | 55.6 | 269.7 | 349.2 | 12 | 1¼" | 1⅛" | 58.9 |
| 10" | 250 | 508 | 63.5 | 323.8 | 431.8 | 16 | 1⅜" | 1¼" | 97.5 |
| 12" | 300 | 559 | 66.5 | 381 | 489.0 | 20 | 1⅜" | 1¼" | 123.8 |
| 14" | 350 | 603 | 69.8 | 412.8 | 527.0 | 20 | 1½" | 1⅜" | 150.7 |
| 16" | 400 | 686 | 76.2 | 469.9 | 603.2 | 20 | 1⅝" | 1½" | 213.8 |
| 18" | 450 | 743 | 82.6 | 533.4 | 654.0 | 20 | 1¾" | 1⅝" | 272.2 |
| 20" | 500 | 813 | 88.9 | 584.2 | 723.9 | 24 | 1¾" | 1⅝" | 349.8 |
| 22" | 550 | 870 | 95.2 | 641.4 | 777.7 | 24 | 1⅞" | 1¾" | 428.5 |
| 24" | 600 | 940 | 101.6 | 692.2 | 838.2 | 24 | 2" | 1⅞" | 533.6 |
NPS 2½ 以内，900 级采用与 1500 级相同的尺寸（标有“= 1500”的行）。
| NPS | DN | O | tf | R | W | 孔数 | 孔 Ø | 螺栓 Ø | 重量* |
|---|---|---|---|---|---|---|---|---|---|
| ½" = 1500 | 15 | 121 | 22.4 | 35.1 | 82.6 | 4 | ⅞" | ¾" | 1.8 |
| ¾" = 1500 | 20 | 130 | 25.4 | 42.9 | 88.9 | 4 | ⅞" | ¾" | 2.4 |
| 1" = 1500 | 25 | 149 | 28.4 | 50.8 | 101.6 | 4 | 1" | ⅞" | 3.5 |
| 1¼" = 1500 | 32 | 159 | 28.4 | 63.5 | 111.1 | 4 | 1" | ⅞" | 4.1 |
| 1½" = 1500 | 40 | 178 | 31.8 | 73 | 124.0 | 4 | 1⅛" | 1" | 5.8 |
| 2" = 1500 | 50 | 216 | 38.1 | 91.9 | 165.1 | 8 | 1" | ⅞" | 10.1 |
| 2½" = 1500 | 65 | 244 | 41.1 | 104.6 | 190.5 | 8 | 1⅛" | 1" | 13.9 |
| 3" | 80 | 241 | 38.1 | 127 | 190.5 | 8 | 1" | ⅞" | 13.1 |
| 4" | 100 | 292 | 44.5 | 157.2 | 235.0 | 8 | 1¼" | 1⅛" | 22.2 |
| 5" | 125 | 349 | 50.8 | 185.7 | 279.4 | 8 | 1⅜" | 1¼" | 36.5 |
| 6" | 150 | 381 | 55.6 | 215.9 | 317.5 | 12 | 1¼" | 1⅛" | 47.5 |
| 8" | 200 | 470 | 63.5 | 269.7 | 393.7 | 12 | 1½" | 1⅜" | 82.5 |
| 10" | 250 | 546 | 69.8 | 323.8 | 469.9 | 16 | 1½" | 1⅜" | 122.4 |
| 12" | 300 | 610 | 79.2 | 381 | 533.4 | 20 | 1½" | 1⅜" | 173.2 |
| 14" | 350 | 641 | 85.9 | 412.8 | 558.8 | 20 | 1⅝" | 1½" | 206.3 |
| 16" | 400 | 705 | 88.9 | 469.9 | 616.0 | 20 | 1¾" | 1⅝" | 259.5 |
| 18" | 450 | 787 | 101.6 | 533.4 | 685.8 | 20 | 2" | 1⅞" | 366.9 |
| 20" | 500 | 857 | 108.0 | 584.2 | 749.3 | 20 | 2⅛" | 2" | 463.7 |
| 24" | 600 | 1041 | 139.7 | 692.2 | 901.7 | 20 | 2⅝" | 2½" | 875.7 |
| NPS | DN | O | tf | R | W | 孔数 | 孔 Ø | 螺栓 Ø | 重量* |
|---|---|---|---|---|---|---|---|---|---|
| ½" | 15 | 121 | 22.4 | 35.1 | 82.6 | 4 | ⅞" | ¾" | 1.8 |
| ¾" | 20 | 130 | 25.4 | 42.9 | 88.9 | 4 | ⅞" | ¾" | 2.4 |
| 1" | 25 | 149 | 28.4 | 50.8 | 101.6 | 4 | 1" | ⅞" | 3.5 |
| 1¼" | 32 | 159 | 28.4 | 63.5 | 111.1 | 4 | 1" | ⅞" | 4.1 |
| 1½" | 40 | 178 | 31.8 | 73 | 124.0 | 4 | 1⅛" | 1" | 5.8 |
| 2" | 50 | 216 | 38.1 | 91.9 | 165.1 | 8 | 1" | ⅞" | 10.1 |
| 2½" | 65 | 244 | 41.1 | 104.6 | 190.5 | 8 | 1⅛" | 1" | 13.9 |
| 3" | 80 | 267 | 47.8 | 127 | 203.2 | 8 | 1¼" | 1⅛" | 19.3 |
| 4" | 100 | 311 | 53.8 | 157.2 | 241.3 | 8 | 1⅜" | 1¼" | 29.8 |
| 5" | 125 | 375 | 73.2 | 185.7 | 292.1 | 8 | 1⅝" | 1½" | 58.7 |
| 6" | 150 | 394 | 82.6 | 215.9 | 317.5 | 12 | 1½" | 1⅜" | 72 |
| 8" | 200 | 483 | 91.9 | 269.7 | 393.7 | 12 | 1¾" | 1⅝" | 121.6 |
| 10" | 250 | 584 | 108.0 | 323.8 | 482.6 | 12 | 2" | 1⅞" | 210.6 |
| 12" | 300 | 673 | 124.0 | 381 | 571.5 | 16 | 2⅛" | 2" | 316.4 |
| 14" | 350 | 749 | 133.4 | 412.8 | 635.0 | 16 | 2⅜" | 2¼" | 420.2 |
| 16" | 400 | 826 | 146.0 | 469.9 | 704.8 | 16 | 2⅝" | 2½" | 558.8 |
| 18" | 450 | 914 | 162.1 | 533.4 | 774.7 | 16 | 2⅞" | 2¾" | 760.9 |
| 20" | 500 | 984 | 177.8 | 584.2 | 831.8 | 16 | 3⅛" | 3" | 964.4 |
| 24" | 600 | 1168 | 203.2 | 692.2 | 990.6 | 16 | 3⅝" | 3½" | 1558.1 |
| NPS | DN | O | tf | R | W | 孔数 | 孔 Ø | 螺栓 Ø | 重量* |
|---|---|---|---|---|---|---|---|---|---|
| ½" | 15 | 133 | 30.2 | 35.1 | 88.9 | 4 | ⅞" | ¾" | 3 |
| ¾" | 20 | 140 | 31.8 | 42.9 | 95.2 | 4 | ⅞" | ¾" | 3.5 |
| 1" | 25 | 159 | 35.1 | 50.8 | 108.0 | 4 | 1" | ⅞" | 5 |
| 1¼" | 32 | 184 | 38.1 | 63.5 | 130.0 | 4 | 1⅛" | 1" | 7.3 |
| 1½" | 40 | 203 | 44.4 | 73 | 146.0 | 4 | 1¼" | 1⅛" | 10.4 |
| 2" | 50 | 235 | 50.8 | 91.9 | 171.4 | 8 | 1⅛" | 1" | 15.6 |
| 2½" | 65 | 267 | 57.2 | 104.6 | 196.8 | 8 | 1¼" | 1⅛" | 22.7 |
| 3" | 80 | 305 | 66.5 | 127 | 228.6 | 8 | 1⅜" | 1¼" | 34.8 |
| 4" | 100 | 356 | 76.2 | 157.2 | 273.0 | 8 | 1⅝" | 1½" | 54.1 |
| 5" | 125 | 419 | 91.9 | 185.7 | 323.8 | 8 | 1⅞" | 1¾" | 90.6 |
| 6" | 150 | 483 | 108.0 | 215.9 | 368.3 | 8 | 2⅛" | 2" | 141.7 |
| 8" | 200 | 552 | 127.0 | 269.7 | 438.2 | 12 | 2⅛" | 2" | 214.1 |
| 10" | 250 | 673 | 165.1 | 323.8 | 539.8 | 12 | 2⅝" | 2½" | 410.9 |
| 12" | 300 | 762 | 184.2 | 381 | 619.3 | 12 | 2⅞" | 2¾" | 592.5 |
剖面图，与表中尺寸（毫米）成比例。
O = 外径 · tf = 不含凸面的厚度 · R = 凸面直径 · W = 螺栓孔圆. * 重量按碳钢几何尺寸估算。
常见问题
ASME B16.5 盲板法兰：各压力等级的尺寸和重量 用于什么场合？
无中心孔的圆盘，用于封闭管线、接管和容器的端部，也用作水压试验接口和预留扩展口。
尺寸是否包含凸台？
不包含。自 2017 版起，ASME B16.5 中的厚度 (tf) 和长度 (Y) 均不含凸台。150 级和 300 级加 1.6 mm，400 级及以上加 6.4 mm。
Dustre 可供应哪些材料？
A105 和 A350 LF2 碳钢、F304L 和 F316L 不锈钢、F51/F60 双相钢、F53/F55 超级双相钢、F11、F22 和 F91 铬钼钢、镍基合金和钛，均为锻造并机加工，附 3.1 证书。
特殊合金盲板（blind）由 Dustre 锻造并机加工，任意压力等级，附 3.1 证书。
申请报价 