40 Chain Excavator Chain Rail SY55/SY60/SY60-7/SY60-8 11044380 Sany Original Parts
Wear and corrosion resistant mine quality impact and pressure resistant preferred material
The optimized production material and process of easy selection chassis parts are made of high-strength alloy tempered steel.
Structure stress treatment, the overall quenching thickness is more than 5 mm, so that the product performance is more stable, more wear-resistant
