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.
GL AH36 shipbuilding steel plate is a kind of high tensile strength marine steel. All of these steels have been engineered to be optimal long-lived shipbuilding steels.As with other grades of steel, they have a specific gravity of 7.8. Higher-strength GL
S235J2W steel plate is kind of weathering resistant steel,BEBEON can provied S235J2W steel plate price and specification,if you need S235J2W steel plate,please contact us!