Sub
category:Drill Collar and Drill Stem Accessories
- The number of clicks:
- Release date:2018/04/23
- Online Inquiry
Detailed
Size :Sub with fishing nipple / Sub with clamp/ saver sub/bit sub/ Lifting sub/circulating sub/float sub
length:8inch / 36inch / 48inch
All kinds of subs apply the shaft furnace vacuum heat treatment; to ensure the yield strength at least of 120000PSI and hardness of full thickness up to 285-341HB.