Spiral drill pipe

Dirlling pipe(oil pipe, oil drilling pipe) The drilling pipe is a major part in connecting the drilling collar/drilling bit with the ground rotary system, the lifting system an...  view detail

Sfeir Trading represent several manufacturers located in Ukraine, Turkey, Bulgaria, China, Korea, UK. Kind of Steel Pipes that we supply are as follow: - Electrical resistant ...  view detail

except for drill pipe, we also supply other petroleum tools. any more details , please see :xxxxx  view detail

Spiral drill collars are one kind of the products of our company. Spiral grooves make mud circulate freely around the drill collar to equalize pressure and prevent a seal from form...  view detail

The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar with drill pipe. It is made from premium alloyed steel, Its both tool...  view detail

　It is made of high quality low-carbon-alloy steel. The raw material undergo a rigorous analysis of the chemical composition by forging, through the testing of mechanical propert...  view detail