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.
The performance of 25SiMn2MoV round bar is same with the 20SiMn2MoV round bar. More information about 25SiMn2MoV round bar Chemical composition and 25SiMn2MoV round bar mechanical properties, please see the following.
Cone crusher spare parts such as main rolling mortar wall, broken wall, KUNFENG mainly do machining,produce o various types of broken wall, the rolling mortar wall.
API 5L Grade B (L245) PSL2 steel plate have many supplier. KUNFENG can regards API 5L Grade B (L245) PSL2 steel plate as one of our main steel. KUNFENG export 500thoused tons API 5L Grade B (L245) PSL2 steel plate to other countries. We set up long relati