hydraulic cylinder for mid arm

#### **Product Overview** This product is a core hydraulic actuator specifically developed for Doosan DX series hydraulic excavators. It is manufactured in accordance with the original factory technical standards and precisely matches the boom structure of Doosan excavators. The cylinder, through optimized power transmission and sealing technologies, ensures efficient and stable performance under heavy-load conditions such as earth excavation and mining operations.  ---   ### **Core Advantages**  #### **1. Factory-level power matching** - 100% compatible with main models such as Doosan DX180/DX225/DX300 - Working pressure: 34.3 MPa (peak 42 MPa) - Thrust is 12% higher than industry standards  #### 2. Strengthened Durability Design - **Cylinder Block**: 27SiMn seamless steel pipe (quenched and tempered heat treatment) - **Piston Rod**: Supersonic spraying WC-Co coating (hardness ≥ HV1100) - **Sealing System**: German MERKEL main seal + Japanese NOK dust-proof combination  #### 3. Intel…