| Specification Range of Inner-Grooved Seamless Copper Tube | ||||||||
| OD/mm | Bottom Wall Thickness (BWT,mm) | Height of Full Tooth (Hf / mm) | Total Wall Thickness (TWT, mm) | Addendum Angle α /(°) | Helix Angle β/(°) | Threads (n) | ||
| 4~10 | 0.20~0.75 | 0.10~0.30 | 0.30~1.05 | 10~100 | 0~40 | 30~100 | ||
| Specification of Inner-Grooved Seamless Copper Tube | ||||||||
| No. | Specification | OD/mm | Bottom Wall Thickness (BWT,mm) | Height of Full Tooth (Hf / mm) | Total Wall Thickness (TWT, mm) | Addendum Angle α /(°) | Helix Angle β/(°) | Threads n |
| 1 | φ4.90×0.20+0.15-40/18-40 | 4.90 | 0.20 | 0.15 | 0.35 | 40 | 17 | 40 |
| 2 | φ5.00×0.20+0.15-40/18-40 | 5.00 | 0.20 | 0.15 | 0.35 | 40 | 18 | 40 |
| 3 | φ6.00×0.22+0.13-25/15-68 | 6.00 | 0.22 | 0.13 | 0.35 | 25 | 15 | 68 |
| 4 | φ6.35×0.23+0.17-15/18-44 | 6.35 | 0.23 | 0.17 | 0.40 | 15 | 18 | 44 |
| 5 | φ7.00×0.22+0.10-37/16-65 | 7.00 | 0.22 | 0.10 | 0.32 | 37 | 16 | 65 |
| 6 | φ7.00×0.23+0.10-40/16-65 | 7.00 | 0.22 | 0.10 | 0.32 | 40 | 16 | 65 |
| 7 | φ7.00×0.23+0.18-35/18-50 | 7.00 | 0.23 | 0.18 | 0.41 | 35 | 18 | 50 |
| 8 | φ7.00×0.24+0.15-25/30-54 | 7.00 | 0.24 | 0.15 | 0.39 | 25 | 30 | 54 |
| 9 | φ7.00×0.24+0.17-20/18-50 | 7.00 | 0.24 | 0.17 | 0.41 | 20 | 18 | 50 |
| 10 | φ7.00×0.24+0.18-35/18-50 | 7.00 | 0.24 | 0.18 | 0.42 | 35 | 18 | 50 |
| 11 | φ7.00×0.25+0.18-15/15-44 | 7.00 | 0.25 | 0.18 | 0.43 | 15 | 15 | 44 |
| 12 | φ7.00×0.25+0.18-40/18-50 | 7.00 | 0.25 | 0.18 | 0.43 | 40 | 18 | 50 |
| 13 | φ7.00×0.27+0.15-53/18-60 | 7.00 | 0.27 | 0.15 | 0.42 | 53 | 18 | 60 |
| 14 | φ7.94×0.24+0.18-35/18-50 | 7.94 | 0.24 | 0.18 | 0.42 | 35 | 18 | 50 |
| 15 | φ7.94×0.25+0.18-20/20-60 | 7.94 | 0.25 | 0.18 | 0.43 | 20 | 20 | 60 |
| 16 | φ8.00×0.24+0.19-15/18-56 | 8.00 | 0.24 | 0.19 | 0.43 | 15 | 18 | 56 |
| 17 | φ9.52×0.24+0.12-50/18-65 | 9.52 | 0.24 | 0.12 | 0.36 | 50 | 18 | 65 |
| 18 | φ9.52×0.27+0.15-15/30-55 | 9.52 | 0.27 | 0.15 | 0.42 | 15 | 30 | 55 |
| 19 | φ9.52×0.27+0.16-30/18-70 | 9.52 | 0.27 | 0.16 | 0.43 | 30 | 18 | 70 |
| 20 | φ9.52×0.27+0.16-15/18-70 | 9.52 | 0.27 | 0.16 | 0.43 | 15 | 18 | 70 |
| 21 | φ9.52×0.28+0.15-53/18-60 | 9.52 | 0.28 | 0.15 | 0.43 | 53 | 18 | 60 |
| 22 | φ9.52×0.30+0.20-53/18-60 | 9.52 | 0.30 | 0.20 | 0.50 | 53 | 18 | 60 |