Typical Steel Grade
AISI4145H-A(heavy drill collar);TNMS501 (non-magnetic drill collar)
Specifications:  Φ185~270mm

Product Features
High level purity, stable composition, high strength, resistance to impact, high toughness, super low magnetic conductivity, high resistance to corrosion, excellent mechanical properties and forging properties; widely used in petroleum drilling industry.

Application fields
For manufacture of heavy drill collar and non-magnetic drill collar.