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 Rolled Tube

CK20 Rolled Tube

As one of the professional ck20 rolled tube suppliers in China, it is waiting for you to wholesale ck20 rolled tube at low price form our factory. CK20 Rolled Tube Product Specification Cylinder ID: 40mm-400mm Thickness:≥4mm Material: 20#(A106B,C20),45#(CK45),16Mn(ST52,E355),25Mn,27SiMn...

Products Specification:

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

CK20 Rolled Tube


Product Specification


Cylinder ID: 40mm-400mm Thickness:≥4mm

Material: 20#(A106B,C20),45#(CK45),16Mn(ST52,E355),25Mn,27SiMn

Standard: GB/T8713-88 ISO4394/1-1980(EN0305,DIN2391)



Rolling Tube for Hydraulic Cylinder

Material:

ST52, CK45, 4140, 16Mn, 42CrMo, E355, Q345B, Q345D, Stainless Steel 304/316, Duplex 2205,etc.

Delivery Condition:

BK, BK+S, GBK, NBK

ID:

20mm - 1500mm

Length:

max 13m

Type:

Seamless, Cold Drawn

Straightness:

≤ 0.5/1000

Roughness:

0.2-0.4 u

Tolerance EXT:

DIN2391, EN10305, GB/T 1619

Tolerance INT:

H7, H8, H9

Protection:

anti-rust oil on inside and outside surface, plastic caps in both ends.

Packing:

bundle with steel strip and knitting strip, or wooden case.






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 





Packing & Shipping    

                         

1. Bundle packing.

2. Beveled end or plain end or varnished as your required.

3. Painting varnish coating on the pipe.

4. Plastic caps at ends.




About Us






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.