... 2.Material: Steel & Stainless Steel 3.Hydraulic Oil Cylinder ,Steel oil cylinder Excavator hydraulic cylinder specification: 1. Piston cylinder2. Stroke: ... years of meticulous design and build,are widely used in hydraulic system for various engineering machinery, lifting machinery, ... 10 years history, we cooperate with foreigners of Excavator hydraulic cylinder industry, and the brand "HTY" exist ...