接头扣型尺寸

对应钻具及钻头 国内编码
2-3/8" DP 2-7/8" DP 3-1/2" DP 5" DP
2A11× 2A10 211× 210 311× 310 4A11× 4A10 411× 410 221× 220 321× 320 421× 420 521× 520 621× 620
公端根径 公端小径 公扣长度 母扣内径 (mm) (mm) (mm) (mm)
Байду номын сангаас
3-3/4" BIT 6-1/8" BIT 8-1/2" BIT
2A31× 2A30 231× 230 331× 330 431× 430 531× 530
12-1/4"BIT/8"DC 631× 630 17-1/2"BIT 731× 730
831× 830
母扣：Box
探伤：Inspection
焊耐磨带jointing hardbandin
接头扣型尺寸
接头数字或尺寸
NC26(2-3/8" IF)(内平扣) 1对于第2个数字 NC31(2-7/8" IF) NC38(3-1/2" IF) NC46(4" IF) NC50(4-1/2" IF) 2-7/8"FH（惯眼）2对于第2个数字 3-1/2"FH 4-1/2"FH 5-1/2"FH 6-5/8"FH 2-3/8"REG （常规扣）3对于第2个数字 2-7/8"REG 3-1/2"REG 4-1/2"REG 5-1/2"REG 6-5/8"REG 7-5/8"REG 8-5/8"REG 公扣：Pin
73.1 86.1 102 122.8 133.4 92.1 101.4 121.7 148 171.5 66.7 76.2 88.9 117.5 140.2 152.2 177.8 202 60.4 71.3 85.1 103.7 114.3 70.1 77.6 96.3 126.8 150.4 47.6 54 65.1 90.5 110.1 131 144.5 167.8 修扣：Repair 76.2 88.9 101.6 114.3 114.3 88 95.2 101.6 127 127 76.2 88.9 95.2 108 120.6 127 133.4 136.5 74.6 87.7 103.6 124.6 134.9 94.5 102.8 123.8 150.5 173.8 68.3 77.8 90.5 119.1 141.7 154 180.2 204.4
扣型尺寸
母扣长度 (mm)
79.4 92.1 104.8 117.5 117.5 95 98.4 104.8 130.2 130.2 79.4 92.1 98.4 111.1 123.8 130.2 136.5 139.7 焊耐磨带jointing hardbanding