Quality parameter

1.materials qualityhigh quality carbon structure steel (45#)

high quality alloy structure steel (40Cr)bearing steel (GCr15)

2. the grade of outside diameter difference: f7-f8

(specail specification can be custom-made up according to request.)

3. Chrome layer thickness: 20um-30um

4.Chrome layer degree of hardness : over HV750

5. high frequency surface quenching degree of hardness

45# steel for: HRC50-55

40Cr  steel for: HRC55-60

GCr15  steel for: HRC60

6. the depth of the surface quenching 1mm-2mm

7. the standard length: 1m----10m

8. the rough degree in surface: Ra 0.2um---0.4um

products purpose or apply to :1.air/oil pressure machine2.rubber/plastic machine3.construction machine4.transport machine5.paper carton machine6.Aluminum extruding die-casting machine7. bottle blowing machine8. wood processing machine9.printing machine10. manufacturing shoe machine11.oil cylinder for parking lot equipment.12.Hydraulic jacks

following standard specification always in stock (diameter X long)6X2500 8X250010X250012X250014X250015X250016X250018X250020X300022X300022.4X300025X300025.4X300028X300030X300031.5X300032X300035X300035.5X300040X300045X300050X300055X300056X300060X300065X300070X300071X300075X300080X300085X300090X300095X3000100X3000110X3000120X3000

chrome plated rods pack in the paper tube.