Pneumatic Drill RodIn order to ensure the Pneumatic Drill Rod is properly used and guarantee its normal working life,Website: , the following instructions need to be noticed:1.Properly choose the appropriate drill rod per the testing comparison or the product recommendation of our company.2.Please make sure that the drill rod is well fit with the bit (uniform tamper); if the taper of drill rod is less than that of the bit, the top-point will be easily broken. 3.It is recommended to use the bill rod sets for place where the depth of rock drilling hole is more than 2.0m. That means firstly open the pore with a short bill rod and then continue to punching with a long drill rod to extend the working life of drill rod (based on different depth of the rock drilling hole, two or three drill rod sets could be used) 4.Please keep in a stable condition while opening pore and accordingly reduce the pushing air volume, the bill rod is not permitted working under bending-stressed condition, otherwise, the working life of bill rod will be shortened.  5.During the process of punching and the related withdrawal operation, please try to protect the bill rod from bending-stressed to improve the working life of the drill rod.6.Please adjust the air volume of rock drilling machine per the on-spot condition (rock condition) to guarantee the normal drilling operation.7.For rocks that cause the bill rod stuck, please use the cross-shaped bill bit.8.Users can not change the structure of drill rod at their option or reuse it after drill rod re-machined in case of affecting the normal working life of the drill rod.9.Users can not change the structure of drill rod at their option or reuse it after drill rod re-machined in case of affecting the normal working life of the drill rod.10.Diameter of the drill rod should properly match with power of the rock drilling machine, if the power is high, please choose the large-size drill rod.Technical ParameterNo.Specifications (mm)UseRemarks DiameterLengthThread  1B19500～3000T16 X6- M14Anchor drill pipe holeSingle use 2B19500～3000T16 X6- T16Anchor cable holeConnector link3B19500～3000T18 X6- T18Anchor cable holeConnector link4B22500～6000T19 X6- M16Anchor drill pipe holeSingle use5B22500～6000T19 X6- T19Anchor cable holeConnector link6B22500～6000T20 X6- T20Anchor cable holeConnector link7B25500～6000T22 X6- M18Anchor drill pipe holeSingle use8B25500～6000T22 X6- T22Anchor cable holeConnector link9B25500～6000T24 X6- T24Anchor cable holeConnector link