Industry Cold Drawn Steel Bar / Chrome Plated Steel Tube High Precision

Industry Cold Drawn Steel Bar / Chrome Plated Steel Tube High Precision

Detailed Product Description

1. Material: 42CrMo4, 40Cr, CK45,ST52,  20MnV6

2. ISO9001:2008

3. Tensile strength: Not less than 610 N/MM2

4. Yield strength: Not less than 355 N/MM2

5. Application: Mining machinery industry, textile / printing industry and so on

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.