1. Pressure: The standard cylinders are equipped with E and G two kinds of presses. E press is applicable to hydraulic cylinders (referred to as E-level Cylinders) with a pressure range of between 6.3 and 16MPa. C press is applicable to hydraulic cylinders (referred to as C-level Cylinders) with a pressure range of more than between 16 MPa and 25MPa.

2. Sealing: E-level Cylinders are equipped with Yx type polyurethane sealing rings with a simple structure, wear resistance performance and Yx type rubber sealing rings with a wide application range. C-level Cylinders are equipped with high pressure-resistance and reliable V type combined sealing ring.

3. Dust Proofing: The hydraulic cylinders are all equipped with polyurethane or nitrile rubber skeletonless dust rings.

4. Applicable Media: Hydraulic oil, machine oil and emulsion, excluding phosphate ester.

5. Applicable temperature: -40t~+120`C.

6. Structure: The standard cylinders, available for customers, fall into 68 categories according to two structures (with a gap buffer and no gap buffer) as well as 34 specifications. The 34 specifications are determined according to seventeen kinds of cylinder diameters (40, 50, 63, 80, 90, 100, 110, 125, 140, 150, 160, 180, 200, 220, 250, 280 and 320) together with two kinds of speed ratios (1.46 and 2).