|Type:||DRILLING ROD||Material:||30CrMnSia XJY850|
|SIZE:||BWL NWL HWL PWL||Length:||3m 1.5m|
DCDMA Standard Wireline Drilling Rods,
BWL Wireline Drilling Rods,
HWL Core Drilling Rod
Superior Grade Material DCDMA Standard Wireline Core Drilling Rods BWL NWL HWL PWL
Sinocoredrill Wireline Drill Rods are made of high quality carbon seamless steel tubes with high mechanical properties. All wireline drill rods are fully heat treated, case hardened at two ends till 50 to 55 HRC hardness to protect thread connection and increases its’ wear resistance and drill rod life.
Well wear resistance
Long drilling life
Sizes: AQ, BQ, NQ, HQ, PQ, NT, HT, PT, AW, BW, NW, AWJ, BWJ, NWJ
Length: 1.0M, 1.5M, 2.0M, 3.0M etc
Q series wireline drill rods specifications:
|AQ||44.5mm||34.9mm||14.0||Entire length heat treated, case hardened at two ends|
|Name||Rated Pullback||Rated Torque||Threaded connection tightening torque ,Nm||Maximum torque Nm||Maximum drilling depth m|
|NWL||250 kN||2000 Nm||600 750||600||1500|
|HWL||250 kN||2000 Nm||1010 1350||1080||1200|
|Name||Tensile Strength:||Yield Strength :||
|BWL||990 Mpa||870 Mpa||17%||29º||HRC28-32|
|NWL||983 Mpa||895 Mpa||19%||29º||HRC28-32|
|HWL||960 Mpa||855 Mpa||18.5%||29º||HRC28-32|
|PWL||1050 Mpa||930 Mpa||14.5%||29º||HRC28-32|
Wireline core drilling useage steps:
1. To mount drill rods, bits, and core barrel etc drilling tools with a diamond drill rig.
2. To utilize a diamond drill bit attached to the end of drill rods to cut a cylindrical core of solid rock.
3. To retrieve the core samples to the surface by retracting the winch cable which located on the top end of the core barrel, lowered inside the rod string.
4. To remove the core sample from the core barrel, break it into small pieces to make it fit into the sample trays and catalogue.
Contact Person: Mr. yuan