Durability of 300T forging press ? Core component assembly is the key ! Focusing on the assembly of core components : the fuselage frame is welded with 20 mm thick Q355 B steel plate and operated by numerical control submerged arc welding machine, and the qualified rate of weld flaw detection is 100 %. When the hydraulic master cylinder is connected to the frame, the torque wrench is tightened according to the 500N · m standard to ensure that the load-bearing has no displacement. Each step is accurately docked according to the drawings, laying the foundation for the stable operation of the equipment !