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 EH36 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.
The steel for shipbuilding and oil platform---DH40, is the high tensile strength steel.The shipbuilding steel DH40 is the Hull structural steel.We can provide DH40 shipbuilding steel plate price.
GB/T 1220 2Cr13 stainless steel belongs to the martensitic steel. Among various stainless steel, 2Cr13 has high cost performance. So GB/T 1220 2Cr13 is widely used in the industrial field.