1000mm - 8000mm Hollow Steel Bar / Hollow Steel Rod For Hydraulic Cylinder

1000mm - 8000mm Hollow Steel Bar / Hollow Steel Rod For Hydraulic Cylinder
 

42CrMo quenched&tempered  rod
 
Detailed Product Description
 
1. Material: CK45, ST52
2. ISO9001:2008
3. Tensile strength: Not less than 610 N/MM2
4. Yield strength: Not less than 355 N/MM2
5. Condition: Chrome plated, Quenched / Tempered, Induction hardened, Q / T Induction hardened
 
Detailed Description
1.CHEMICAL  COMPOSITION

 
2.MECHANCIAL PROPERTIES

 
3. SUPPLY CONDITION
    Ground  and  chrome plated 
4. CHROME THICKNESS
     20 to 30 micron
5. SURFACE ROUGHNESS
     Ra≤0.2 micron and  Rt≤2 micro
6. TOLERANCES ON DIA
    ISO f7 on the diameter
7.OVALITY
Half of the tolerance ISO f7
8. STRAIGHTNESS
   ≤0.2MM/M
9. SURFACE HARDNESS
   850-1150HV (vickers 100g)
10.COHESION
   No cracks,breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling 
   in water)
11 .POROSITY
     Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
12 CORROSION RESISTANCE
     Test in natural salt spray according to ASTM B 117-72hours
     Results evaluation according to ISO 4540 RATING 7-10
13. WELDABILITY
      Good
14. PACKING
     Anti rust oil to be applied on material and each rod to be packed in paper sleeve
15. CERTIFICATE
     All certificate related with material heat treatment and plating is required
 
We have set up the principle of “high quality, good reputation”, carried out a series of rigorous quality management system, and have already passed the ISO9001:2008 international quality system. Our inspection apparatus and production equipment are advanced and superior, that ensure the product of high quality.