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20 micron - 30 micron Piston Honed Tube , Telescopic Cylinder Tube

Jiangsu New Heyi Machinery Co., Ltd
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20 micron - 30 micron Piston Honed Tube , Telescopic Cylinder Tube

Brand Name : HY

Certification : ISO9001:2008

Place of Origin : China

MOQ : 5 tons

Price : Negotiation

Payment Terms : L/C, T/T

Supply Ability : 30tons a day

Delivery Time : 30days

Packaging Details : Anti rust oil to be applied on material and each rod to be packed in paper sleeve

Delivery status : Stress Relieving Annealed

Product name : Telescopic cylinder tube

Material : Steel

Surface treatment : Chrome Plating

Chrome thickness : 20-30 micron

OD tolerance : ISO f7

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20 micron - 30 micron Piston Honed Tube , Telescopic Cylinder Tube

Detailed Product Description

Telescopic Cylinder Tube and Piston Tube

Our precision seamless tubes are suitable for the manufacture of pistons, telescopic cylinder. We can

supply hard chrome plating for the telescopic cylinder tube as well, and the technical delivery conditions

refer to the next page. A comparison of tubular piston rods versus solid piston rods of the same diameter

based on identical compressive, bending and torsional stresses show that the annular cross section

permits appreciable weight saving. By cold drawing, the tube piston rods have the decisive advantage of

more higher mechanical properties than the hot finished piston rods.

Chemical Composition

Grade

C

Si

Mn

P

S

Cu

Ni

Cr

Mo

CK20

0.17-0.24

0.17-0.37

0.35-0.65

≤0.035

≤0.035

≤0.25

≤0.30

≤0.20

/

CK45

0.42-0.50

0.17-0.37

0.35-0.65

≤0.035

≤0.035

≤0.25

≤0.30

≤0.20

/

ST52(16Mn)

≤0.20

≤0.55

1.00-1.60

≤0.035

≤0.035

≤0.25

≤0.30

≤0.20

/

42CrMo4

0.38-0.45

0.15-0.40

0.60-0.90

≤0.035

≤0.035

/

/

0.90-1.20

≤0.25

Mechanical property

Grade

Tensile Strength(MPa)

Yield strength(MPa)

Elongation %

Remark

CK20

≥580

≥480

15

CDS+KS

CK45

≥620

≥520

15

CDS+KS

ST52(16Mn)

≥580

≥520

16

CDS+KS

42CrMo4

≥980

≥850

14

I.H.+Q.T.

CDS: Cold Drawn Seamless

BKS: Stress Relieved Annealed

I.H.+Q.T.: Induction Hardened + Quench and tempered

20 micron - 30 micron Piston Honed Tube , Telescopic Cylinder Tube

Telescopic Cylinder Tube OD Chrome Plated Requirements:

Chrome Thickness

20-30 micron

Surface Roughness

Ra≤0.2 micron and Rt≤2 micro

OD Tolerance

ISO f7 on the diameter

Ovality

Half of the tolerance ISO f7

Straightness

≤0.2mm/m

Surface Hardness

850-1150HV (vickers)

Cohesion

No cracks,breaking or detaching after thermic shock

(warming up at 300 celius degrees and coolng in water)

Porosity

Tested according to ISO 1456/1458 and result according to

ISO4540 rating 8-10

Salt Spray Test

Test in natural salt spray according to ISO 9227/AST M B117 96

hours and result evaluation according to ISO4540 rating 8-10

Tolerance on ID

ID mm

Values of tolerances are in microns

H7

H8

H9

H10

30

+21

+33

+52

+84

>30-50

+25

+39

+62

+100

>50-80

+30

+46

+74

+120

>80-120

+35

+54

+87

+140


Product Tags:

honed tubing

      

honed tubes

      
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