Drill String Cross-over Sub uses AISI4145H chromium-molybdenum steel, execute API specification.We can produce the same-dia type, reducers type and L-type three types, the screw can be cold thread rolling, copper or phosphate treatment.
ASTM A29/A29M 5130 alloy steel is a quenching and tempering steel. 5130 can also be used after normalizing. After the treatment, ASTM A29/A29M 5130 round bar has excellent strength and hardenability.
Crushing wall has a powerful crushing capacity, mainly used for crushing medium hardness , moisture content less material. It is a kind of crusher accessories, use of impact energy to broken material is an important work of the cone crusher parts.
The NK EH40 shipbuilding steel plates have yield strength of 56,500 psi (390 MPa), and ultimate tensile strength of 74,000 - 94,500 psi (510-650 MPa).Higher-strength NK shipbuilding steel comes in 12 grades of 3 strengths, NK EH40 shipbuilding steel plate