well drill rod 1.OD:50mm-89mm 2.Application:well drilling,geologic drilling,coal mining 3.material:STM-R780

geological drill rod

 in diameters of 42/50/60/73/89 millmeters

drilling joints in diameters of 57/165/75 millmeters

Size(inch)	Outside Diam.	type	used for
	50		well drilling,geologic prospecting
2-3/8	60.3		well drilling,geologic prospecting
2-7/8	73.0		well drilling,geologic prospecting
3-1/2	88.9		well drilling,geologic prospecting

we are factory specializing in the manufacture and export of drill pipe, drill collars and drilling joints(API and other standard) for more than thirty years.

Complete in specifications, quality and quantity assured, competitively priced!

friction welding drill rod