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.
18CrNiMnMoA is a king of Alloy steel. And 18CrNiMnMoA features good performance for heat treatment. The cutting process is good after the normalizing treatment. More informational about it, please see the following.
ISO3183 L690M/X100M PSL2 LSAW pipeline is KUNFENG Steel main production steel, mainly used for onshore and offshore oil and natural gas. Can also be used as offshore platforms, power plants, petrochemical, urban construction and other construction pipeline. ISO3183 L690M/X100M PSL2 LSAW pipeline has good chemical properties and mechanical properties.
KUNFENG is the supplier of GB/T16270 Q460E carbon and low alloy steel plate,KUNFENG provides additional conditions for GB/T16270 Q460E carbon and low alloy steel plates. KUNFENG can produce different sizes of GB/T16270 Q460E carbon and low alloy steel pla