Product Name: Tapered/Taper Thread Drill Rod for Drilling Model NO.: thread drill rod Material: Carbide Usage: Coal Mining, Ore Mining Length: 300mm-1000mm Certification: RoHS, CE, BS, BIN, JIS, AISI, API Remarks: Circular/Hexagonal Trademark: Enwei Transport Package: Wooden Case Specification: 300mm-1000mm Origin: China HS Code: 8431439000 Product Description Tapered/Taper Thread Drill Rod for DrillingDifferent rock formations and rock drills require different taper angles. When drilling with high impact hydraulic rockdrills in medium-hard to hard and abrasive rock formations, a wide taper angle is normally used. Taper angles of11 and 12-degrees are normally used on modern drill rigs. For low impact rock drills and softer rock formations, anarrow taper angle of seven degrees is used. A 7-degree angle can also be used if bit spinning is a problem whenusing 11 and 12-degree equipment. In addition, a 4, 46 degree angle is ideal for soft rock when you're usingpneumatic or hydraulic drill rigs - to prevent bits from spinning or becoming detached.Part number Taper Angle Shank Length WeightMm mm kgBT220600-66° (7° 11° 12° ) Hex 22 x 108 600 2.2BT220800-66° (7° 11° 12° ) Hex 22 x 108 800 2.8BT221000-66° (7° 11° 12° ) Hex 22 x 108 1000 3.4BT221200-66° (7° 11° 12° ) Hex 22 x 108 1200 4BT221400-66° (7° 11° 12° ) Hex 22 x 108 1400 4.5BT221600-66° (7° 11° 12° ) Hex 22 x 108 1600 5.1BT221800-66° (7° 11° 12° ) Hex 22 x 108 1800 5.7BT222000-66° (7° 11° 12° ) Hex 22 x 108 2000 6.5BT222200-66° (7° 11° 12° ) Hex 22 x 108 2200 7.2BT222400-66° (7° 11° 12° ) Hex 22 x 108 2400 7.8BT222600-66° (7° 11° 12° ) Hex 22 x 108 2600 8.3BT222800-66° (7° 11° 12° ) Hex 22 x 108 2800 8.9BT223000-66° (7° 11° 12° ) Hex 22 x 108 3000 9.5BT223600-66° (7° 11° 12° ) Hex 22 x 108 3600 11.2BT224000-66° (7° 11° 12° ) Hex 22 x 108 4000 12.7BT224800-66° (7° 11° 12° ) Hex 22 x 108 4800 15.2BT225600-66° (7° 11° 12° ) Hex 22 x 108 5600 18.4BT226400-66° (7° 11° 12° ) Hex 22 x 108 6400 20BT227200-66° (7° 11° 12° ) Hex 22 x 108 7200 22BT228000-66° (7° 11° 12° ) Hex 22 x 108 8000 24.522mm 7 / 8 " hex rod. 108mm 4 1 / 4 " shank.4°46' taperLength (mm)Part No.Weight (kg)800578-0108,112.91600578-0116,115.42000578-0120,116.62200578-0122,117.12400578-0124,117.83200578-0132,1110.23500578-0135,1111.14000578-0140,1112.77° taperLength (mm)Part No.Weight (kg)400573-0104,111.7800573-0108,112.91830573-0118,1162000573-0120,116.52435573-0124,117.83050573-0131,119.93200573-0132,1110.14000573-0140,1112.711° taperLength (mm)Part No.Weight (kg)610579-0106,112.41220579-0112,114.21525579-0115,1151830579-0118,116.12000579-0120,116.62435579-0124,117.92600579-0126,118.43200579-0132,1110.33655579-0137,1111.74000579-0140,1112.84800579-0148,1115.15600579-0156,1117.56400579-0164,11207200579-0172,1122.48000579-0180,1124.912° taperLength (mm)Part No.Weight (kg)1220577-0106,112.31525577-0112,114.21830577-0115,115.12000577-0118,116.12435577-0120,116.63050577-0124,117.93200577-0131,119.83655577-0132,1110.23965577-0137,1111.74800577-0140,1112.85600577-0148,1115.26400577-0156,1118.47200577-0164,11208000577-0172,1122577-0180,1124.8