名称大径中径小径
G1/89.7289.1478.566
G1/413.15712.30111.445
G3/816.66215.80614.95
G1/220.95519.79318.631
G3/426.44125.27924.117
G133.24931.7730.291
G1.1／441.9140.43138.952
G1.1/247.80346.32444.845常用公英制管螺纹对照表有效长度
6.5
9.7
10.1
13.2
14.5
16.8
19.1
19.1
求公英制管螺纹对照表！
55度 和60度牙型角的区别
55度是英制。美国有美制和公制。美制和公制都是60度。好多地方都有对照表。
UNF谁知道是什么意思？
UNF－统一制细牙螺纹（代替NF）Unified fine pitch thread
( Instead of NF )
管螺纹是用英寸表示，1英寸=25.4mm,你可以直接把英寸换算成公制的毫米
管螺纹与标准螺纹换算标准
尺寸代号 每英寸牙数 螺 距 螺纹 直 径
（in) n p 大径D、d 小径D1、d1
1/16 28 0.907 7.723 6.561
1/8 28 0.907 9.728 8.566
1/4 19 1.337 13.157 11.445
3/8 19 1.337 16.662 14.95
1/2 14 1.814 20.955 18.631
5/8 14 1.814 22.911 20.587
3/4 14 1.814 26.441 24.117
7/8 14 1.814 30.201 27.877
1 11 2.309 33.249 30.291
1-1/8 11 2.309 37.897 34.939
1-1/4 11 2.309 41.91 38.952
1-1/2 11 2.309 47.803 44.845
1-3/4 11 2.309 53.746 50.788
2 11 2.309 59.614 56.656
2-1/4 11 2.309 65.71 62.752
2-1/2 11 2.309 75.184 72.226
2-3/4 11 2.309 81.534 78.578
3 11 2.309 87.884 84.926
3-1/2 11 2.309 100.33 97.372
4 11 2.309 113.03 110.072
5 11 2.309 138.43 135.472
求公英制管螺纹对照表！
55度 和60度牙型角的区别
55度是英制。美国有美制和公制。美制和公制都是60度。好多地方都有对照表。
UNF谁知道是什么意思？
UNF－统一制细牙螺纹（代替NF）Unified fine pitch thread
( Instead of NF )
管螺纹是用英寸表示，1英寸=25.4mm,你可以直接把英寸换算成公制的毫米
管螺纹与标准螺纹换算标准
尺寸代号 每英寸牙数 螺 距 螺纹 直 径
（in) n p 大径D、d 小径D1、d1
1/16 28 0.907 7.723 6.561
1/8 28 0.907 9.728 8.566
1/4 19 1.337 13.157 11.445
3/8 19 1.337 16.662 14.95
1/2 14 1.814 20.955 18.631
5/8 14 1.814 22.911 20.587
3/4 14 1.814 26.441 24.117
7/8 14 1.814 30.201 27.877
1 11 2.309 33.249 30.291
1-1/8 11 2.309 37.897 34.939
1-1/4 11 2.309 41.91 38.952
1-1/2 11 2.309 47.803 44.845
1-3/4 11 2.309 53.746 50.788
2 11 2.309 59.614 56.656
2-1/4 11 2.309 65.71 62.752
2-1/2 11 2.309 75.184 72.226
2-3/4 11 2.309 81.534 78.578
3 11 2.309 87.884 84.926
3-1/2 11 2.309 100.33 97.372
4 11 2.309 113.03 110.072
5 11 2.309 138.43 135.472
4分为对应口径DN15，即直径15mm;
6分为对应口径DN20，即直径20mm;
1寸为对应口径DN25，即直径25mm;
1.2寸为对应口径DN32，即直径32mm;
1.5寸为对应口径DN40，即直径40mm;
2寸为对应口径DN50，即直径50mm;
2.5寸为对应口径DN65，即直径65mm;
3寸为对应口径DN80，即直径80mm;
4寸为对应口径DN100，即直径100mm;
5寸为对应口径DN125，即直径125mm;
6寸为对应口径DN150，即直径150mm;
8寸为对应口径DN200，即直径200mm;
10寸为对应口径DN250，即直径250mm
划线尺寸公称通径公制钢管（mm）螺纹外螺纹OD内螺纹ID螺纹外螺纹OD内螺纹ID螺纹外螺纹OD内螺纹ID螺纹外螺纹OD内螺纹ID螺纹外螺纹OD内螺纹ID
21/8"35/16"*247.955.945/16"*247.955.941/8"*2710.168.741/8"*289.918.7633/8"*249.533/8"*249.5341/4"67/16"*2011.139.937/16"*2011.139.939/16"*1814.3012.701/4"*1814.3011.581/4"*1913.5111.5855/16"81/2"*2012.7011.511/2"*2012.7011.5163/8"10*9/16"*1814.3012.7063/8"109/16"*1814.3012.70* *5/8"*1815.8814.3011/16"*1617.4815.883/8"*1817.4515.093/8"*1916.6615.0981/2"123/4"*1619.0517.453/4"*1619.0517.4513/16"*1620.6519.051/2"*1421.1319.051/2"*1420.9618.7681/2"12* *3/4"*1819.0517.45105/8"157/8"*1422.2320.457/8"*1422.2320.451"*1425.4023.805/8"*1423.0120.78123/4"20*1-1/16"*1227.0024.61123/4"201-1/16"*1227.0024.61* *1-1/16"*1427.0024.991-3/16"*1230.1827.813/4"*1427.0024.413/4"*1426.7024.41141-3/16"*1230.1827.81161"251-5/16"*1233.3531.341-5/16"*1233.3531.341-7/16"*1236.5334.141"*11.533.3530.151"*1133.3530.15201-1/4"321-5/8"*1241.2839.291-5/8"*1241.2839.291-11/16"*1242.8840.491-1/4"*11.542.5839.701-1/4"*1142.0638.89241-1/2"381-7/8"*1247.6345.641-7/8"*1247.6345.642"*1250.8048.411-1/2"*11.548.4144.451-1/2"*1147.6345.24322"502-1/2"*1263.5061.522-1/2"63.5061.522"*11.560.3357.152"*1159.5645.24英制螺纹表
