Tel: +86-187 6566 3008
E-mail: patrick@longyuehydraulic.com

Contact

Qingzhou Longyue Hydraulic Machinery Co.Ltd

Add: No.2878, Haidai North Road, Economic Development Zones, Qingzhou, Shandong Province, China
Tel/Fax: +86-536-3295150
Mobile: +86-187 6566 3008
E-mail: longyueyeya@qq.com; patrick@longyuehydraulic.com
Web: www.longyuehydraulic.com; www.leonhydraulic.com
alibaba site: 
https://qzlongyue.en.alibaba.com 


CK20 Honed Tube

CK20 Honed Tube

As one of the professional ck20 honed tube suppliers in China, it is waiting for you to wholesale en10305 honed tube at low price form our factory. CK20 Hone Tube Honing tube and rolling tube inside and outside wall oxide layer, to withstand high pressure without leakage, high-precision,...

Products Specification:

As one of the professional ck20 honed tube suppliers in China, it is waiting for you to wholesale en10305 honed tube at low price form our factory.

CK20 Hone Tube

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Honing tube and rolling tube inside and outside wall oxide layer, to withstand high pressure without leakage, high-precision, high-quality finish, cold deformation, flaring, flattening without cracks a bit, so mainly used to produce pneumatic or hydraulic components products, such as cylinder or cylinders, which can be seamless. 



Product Parameters


Cylinder ID: 40-400mm


Wall thickness: 3-50mm


Material: 20#  45#(CK45)  16Mn(ST52)  25Mn  27SiMn  

  

Standard: GB/T8713-88 GB/T3639-2000 DIN2391 EN10305


Processing form


Cylinder ID (mm)

Length  (m)

Straightness (mm/m)

Tolerance    on ID


Roughness (μm)

Cold drawn

30-250

≤13m

0.2-0.5

H9-H11

0.8-1.6

Cold rolling

30-100

≤12m

0.2-0.5

H9-H10

0.8-1.6

Honed

40-800

≤7m

0.2-0.3

H7-H9

0.4-0.8





Mechanical Properties



Steel Grade

Tensile strength

(σb N/mm2)

Yield strength

(σs N/mm2)

Elongation

(δ %)

Hardness
HB

   20#

≥520

≥470

≥12

175

45#(CK45)

≥600

≥520

≥12

207

16Mn(ST52)

≥600

≥520

≥15

190

25Mn

≥600

≥510

≥15

195

27SiMn

≥800

≥720

≥10

230





Dimension Tolerance




Size of ID (mm)

     
     ID Tolerance


Tolerance of wall thickness

H7

H8

H9

H10

H11


30

+0.021
0

+0.033
0

+0.052
0

+0.084
0

+0.130
0





±5%

>30-50

+0.025
0

+0.039
0

+0.062
0

+0.100
0

+0.160
0

>50-80

+0.030
0

+0.046
0

+0.074
0

+0.120
0

+0.190
0

>80-120

+0.035
0

+0.054
0

+0.087
0

+0.140
0

+0.220
0

>120-180

+0.040
0

+0.063
0

+0.100
0

+0.160
0

+0.250
0

>180-250

+0.046
0

+0.072
0

+0.115
0

+0.185
0

+0.290
0

>250-315

+0.052
0

+0.081
0

+0.130
0

+0.210
0

+0.320
0

>315-400

+0.057
0

+0.089
0

+0.140
0

+0.230
0

+0.360
0





Product Process


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Packing & Shipping


1. In bulk (Large OD)

2. In bundle with steel strips (Small OD)

3. With woven cloth

4. A per customer's requirements

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About US


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Application


The honing and finished rolling tube, have been widely used in many industries, such as hydraulic cylinder, petrochemical sand pumping vessel, shipping, construction machinery, mining machine, filling machine and agricultural machine,etc.

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