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.
As the nuclear power equipment, hydropower equipment, and large ship products are developing towards large-scale direction, the mechanical processing of large-scale components needs to meet the market
ASTM A131 AH40 Steel machining parts Delivery status: according to the properties and requirements of customers, A131 AH40 steel work can be normalizing, Annealing, Tempering and so on.
Speed reducer is a power transmit device, using the speed converter of gear to slow down the turnover number of motor back to request number and get bigger torque.
DNV grade D steel plate is a kind of hot rolled general tensile strength steel. All the DNV/D shipbuilding Steel plate offered by KUNFENG Industry can be certificated by Det Norske Veritas (DNV).