We specially in manufacturing cold drawn precision Seamless Tubes for geological explore, Leading supplier of mother tubes
for wire-line drilling rods in China.The product including wire-line drilling rods, High Intensity mother tubes for Wire-line Drilling rods,
inner tube, outer tube and coupling tube.The steel grade XJY600,XJY750 and XJY850 AISI4130,AISI1541,8620H which we designed and manufactured can satisfy the purchasing requirements for the different exploring depth and methods of coupling,including straightness
concentricity and Mechanical properties. The materials can be produced as the main international standard, including GB/T9808, DCDMA,
BS4019, METRIC,ISO10097,The normal size:AQ,BQ,NQ,HQ,PQ,SQ,AW,BW,NW,HW,PW etc.
Drill Tubes,Mining Drill Pipes,Core Barrel Drill Pipes,Seamless Mining Drill Pipes
Ningbo Huijie Steel Pipe Manufacturing Co.,Ltd , https://www.hjbearingtube.com