
㻻㼕㼘㻌㼜㼞㼑㼟㼟㼡㼞㼑㻌㼔㼑㼍㼐 㻮㼍㼞㻌㼞㼑㼟㼠 㻮㼍㼞㻌㼏㼘㼍㼙㼜
㻰㼞㼕㼘㼘㻌㼔㼑㼍㼐 㻰㼞㼕㼘㼘㻌㼠㼡㼎㼑
L1 L2' L3 L2'' L4
OAL OAL = 㻰㼞㼕㼘㼘㻌㼠㼡㼎㼑㻌㼣㼔㼛㼘㼑㻌㼘㼑㼚㼓㼠㼔 OAL = L1 + L2 + L3 + L4 - L5 Drill tube length L1 = Oi㼘㻌㼜㼞㼑㼟㼟㼡㼞㼑㻌㼔㼑㼍㼐㻌㼘㼑㼚㼓㼠㼔
L2 = Dr㼕㼘㼘㼕 ng depth (L2㻓㻌㻗㻌㻸㻞㻎㻕 L3 = Ba㼞㻌㼞㼑㼟㼠㻌㼘㼑㼚㼓㼠㼔 L4 = Dr㼕㼘㼘㻌㼠㼡㼎㼑㻌㼏㼘㼍㼙㼜㻌㼘㼑㼚㼓㼠㼔 L5 = Len㼓㼠㼔㻌㼒㼞㼛㼙㻌㼐㼞㼕㼘㼘㻌㼠㼡㼎㼑㻌㼠㼕㼜㻌㼍㼚㼐㻌 㼜㼑㼞㼕㼜㼔㼑㼞㼍㼘㻌㼑㼐㼓㼑㻌㼠㼕㼜
| DCN-DCX | L5 | DCN-DCX | L5 | DCN-DCX | L5 | |
| 25 - 29.99 | 45 | 38 - 43.99 | 40 | 16 - 16.5 | 31.5 | |
| 30 - 33.99 | 50 | 44 - 51.99 | 50 | 16.51 - 17.25 | 31.5 | |
| 34 - 36.99 | 50 | 52 - 56.99 | 60 | 17.26 - 18 | 31.5 | |
| 37 - 39.99 | 55 | 57 - 67.99 | 70 | 18.01 - 19 | 31.5 | |
| 40 - 43.99 | 60 | 68 - 161.99 | 80 | 19.01 - 19.99 | 31.5 | |
| 44 - 51.99 | 65 | 162 - 257.99 | 105 | 20 - 21.99 | 33 | |
| 52 - 56.99 | 70 | 258 - 293.99 | 90 | 22 - 24.99 | 35 | |
| 57 - 65 | 75 | 25 | 35 |
25.01 - 26.99 40 27 - 28 40