China Drill Machine Mud Pump Parts Crosshead Hex Bolt, Find details about China Drilling Pump, Pump from Drill Machine Mud Pump Parts Crosshead Hex Bolt
Description:
In order to ensure a high tensile strength and high fatigue strength, the main bearing bolts used 40CrNiMo rough forging, heat treatment, and gradually check the hardness value, rolling from the threaded portion to ensure that the mechanical properties.