Material: seamless tube Model: QD / YD Specifications: 8-28cm, metal head can be customized Finish: Plating / coating applied load: 180N-1000N open: 10 million or more color: black, customizable Packing: 100PCS / piece How it works: gas spring hydraulic rod is in a sealed pressure cylinder filled with inert gas or gas mixture, the pressure inside the chamber several times higher than the atmospheric pressure or a few times, the use of the piston rod cross-sectional area smaller than the cross section pressure area resulting in poor to achieve telescopic movement of the piston rod. Categories: Gas spring is also known as rod, air support, adjuster, pressure bar, damper and so on. The gas spring as the structure and function classification, gas springs freestyle gas spring, self-locking gas springs, traction gas springs, free to stop gas springs, swivel chair gas springs, gas spring, damper and other types. Purpose: The gas spring hydraulic rod is widely used in the automotive industry, the furniture industry, advertising light boxes industry, machinery and other machinery industry, to the doors on the turn (top support), aluminum frame doors (open brace), the next turn door (hanging brace) . Advantages: pneumatic bars to high-pressure inert gas as the driving force in the entire work stroke support force is constant, and a buffer mechanism in place to avoid the impact, which is superior to the common characteristics of the largest spring, and with easy installation safe use without maintenance and other advantages.