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Hydraulic Honed Tube,Pneumatic Cylinder pipe

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Various kinds of Precision Mechanical Tube, Hydraulic and Pneumatic Cylinder Tube, 

Construct use Multi Joint Tube, Steel Axis Pipe, Injection Machine and Robotic Arm.


Steel grade: 20#( SAE1020). 45K. St52. 20Mn2. 27SiMn. ST 45,
E355,SAE1026, SAE1045 STKM13C and etc.
Materials : STKM 13C, ST52 ,JIS G3445 , ST52 BK+S , ST52.3 
Certificate: EN10204 3.1 
Roughness:0.4 microns(max), average: less than 0.2 micron
ID : 18~350mm
OD : 30~420mm
Length : 3000~8000mm

Surface Roughness : Ra0.4~Ra0.8
ID Accuracy : H7-H8 
Special size and material can be ordered. 
Package: banding with steel strips, braiding parcel at outside 
Conservation: Anti rust oiled coating on the inside and outside of the surface,
plastic caps at both ends.

   CDS: Cold draw seamless

 

 


DIN ST52 seamless steel hydraulic honed tubes

1. MATERIAL SPECIFICATION AND REF. DOCUMENT

ST52,BK+S,DIN2391 OR Equivalent

2. CHEMICAL COMPOSITION (%)

C (Max)  Mn(Max)  Si(Max)  S(Max)  P(Max)

0.22        1.6      0.5       0.035   0.035

3. MECHANICAL PROPERTIES

Elongation(Min)       Y.S (Min.)               UTS (Min.)

≥15               470 N/MM2               580 N/MM2

4. SUPPLY CONDITION

Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished

5. SURFACE ROUGHNESS

Ra = 0.4~0.8Micron

6. TOLERANCES ON INNER DIA

ISO H8

7.TOLERANCES ON WALL THICKNESS

≤ Dia120 +/-10 % of wall thickness

≥ Dia120 +/-10 % of wall thickness

8. STRAIGHTNESS

≤1 mm/M

9. OD TOLERANCE

≤ Dia 40 +/-0.2 mm

≥ Dia 40 ≤ Dia 100 +/-0.3mm

≥ Dia 100 +/-0.5mm

10. LENGTH AND CUT TOLERANCE

Length ≤ 500mm , +2mm

> 500mm ≤ 2000mm, +3mm

> 2000mm ≤ 5000mm, +5mm

> 2000mm ≤ 7000mm, +10mm

11. TUBE ENDS

Tube ends shall be cut nominally square to the axis and free from burs

12. APPEARANCE

Tube shall have a smooth internal and external surface consistent with cold working

process, tube inner surface should be free from rust, scratches and other surface

irregularities.

13. CERTIFICATION

Material certificates will be send to you if want.

14. PACKING

Anti rust oil to be applied on material and both ends closed by plastic cap and

bundled by steel strips,braiding parcel.

15. SCOPE

Hydraulic cylinder tube for swivel crane, injection machine and construction

machine application

What we do is to help you work more safely and effectively!

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Our company covers an area of 80, 000 m2 with a total assets of 90 million Yuan. There are 360 staff members including 80 technicians in our company. .

We also establish an effective complete quality control system. In 2003, our company obtained the certificate of ISO9001 Quality System Authentification!