The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similiar with drill pipe.
Size 3-1/2, 4, 4-1/2, 5, 5-1/2, 6-5/8
RSC type NC38, NC40, NC46, NC50, 5-1/2FH, 6-5/8FH
Material AISI 4145H
We also prvide Tri-spiral intergral heavy weight drill pipe and normal drill pipe S135, G105