API 5B Drill pipe thread ring gauge
Oil drill pipe joint gauge is a comprehensive inspection of oil drill pipe joint thread gage, according to different forms of tool joint, the gauge can be divided into the normal type, full hole type, the flat and word four, each has a series of specifications.Is oil drill pipe joint, faucet, drill pipe, drill collar, drill pipe component connection thread inspection measuring tool.Digital type: NC10 - NC77 full-bore type: 3 1/2 fh ~ 6 5/8 fh formal type;Flat within 3/8 3/8 reg 2 ~ 8 reg: 3/8 if 2 ~ 5 1/2 IF.
gauge close distance tolerance:15.875±0.100
product tolerance:ring gauge for test male thread
normal type oil drill pipe joint thread size(REG)
specifi cations | normal type | teeth type | teeth no. | taper | pitch diameter | LPC | LBT | LBC |
| REG 2-3/8 | 231×230 | V-0.040 | 5 | 1:04 | 60.08 | 76.2 | 79.38 | 92.08 |
| REG 2-7/8 | 69.605 | 88.9 | 92.08 | 104.78 | ||||
| REG 3-1/2 | 331×330 | 82.293 | 95.25 | 98.43 | 111.13 | |||
| REG 4-1/2 | 431×430 | 110.868 | 107.95 | 111.13 | 123.83 | |||
| REG 5-1/2 | 531×530 | V-0.050 | 4 | 132.944 | 120.65 | 123.83 | 136.53 | |
| REG 6-5/8 | 631×630 | 1:06 | 146.248 | 127 | 130.18 | 142.88 | ||
| REG 7-5/8 | 731×730 | 1:04 | 170.549 | 133.35 | 136.53 | 149.23 | ||
| REG 8-5/8 | 831×830 | 194.731 | 136.53 | 139.7 | 152.4 |
specifi cations | normal type | teeth type | teeth nO. | taper | pitch diameter | LPC | LBT | LBC |
| FH 3-1/2 | 321×320 | V-0.040 | 5 | 1:04 | 94.844 | 95.25 | 98.43 | 111.13 |
| FH 4(NC40) | V-0.065 | 4 | 1:06 | 103.429 | 114.3 | 117.48 | 130.18 | |
| FH 4-1/2 | 421×420 | V-0.040 | 5 | 1:04 | 115.113 | 101.6 | 104.78 | 117.48 |
| FH 5-1/2 | 521×520 | V-0.050 | 4 | 1:06 | 142.011 | 127 | 130.18 | 142.88 |
| FH 6-5/8 | 621×620 | V-0.050 | 4 | 1:06 | 165.598 | 127 | 130.18 | 142.88 |
| inner flat type oil drill pipe joint thread size(IF) teeth 4, taper:1:1.06 | ||||||
specifi cations | noraml type | teeth type | pitch diameter | LPC | LBT | LBC |
| IF 2-3/8(NC26) | V-0.065 | 67.767 | 76.2 | 79.38 | 92.08 | |
| IF 2-7/8(NC31) | 211×210 | 80.848 | 88.9 | 92.08 | 104.78 | |
| IF 3-1/2(NC38) | 311×310 | 96.723 | 101.6 | 104.78 | 117.48 | |
| IF 4(NC46) | 4A11×4A10 | 117.5 | 114.3 | 117.48 | 130.18 | |
| IF 4-1/2(NC50) | 411×410 | 128.059 | 114.3 | 117.48 | 130.18 | |
| IF 5-1/2 | 511×510 | 157.201 | 127 | 130.18 | 142.88 | |
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