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Qingzhou Longyue Hydraulic Machinery Co.,Ltd


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Honed Tube for Hydraulic Cylinder
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Product: Views:114Honed Tube for Hydraulic Cylinder 
Unit price: Negotiable
MOQ:
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Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2018-05-20 00:05
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Details

Professional manufacturer of Hard chrome rod for hydraulic, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China.


Honed Tube For Hydraulic Cylinder


Longyue hydraulic Machinery, a professional manufacturer specialized in hydraulic and pneumatic products.

We provide Design, Produce, Machining and Service since 2004.


Specefication 

Standard: DIN2391, EN 10305, JIS G3445, ASTM A519, GB/T 8713…

Material: ST45, ST52, E355, E355SR, STKM13C, SAE 1026, 20#, Q235B, CK45…

Heat treatment: BK+S

Specification: Out diameter: 20-800mm, Inner diameter: 40-250mm

I.D Tolerance: H7-H8

Length: 3-13m (Customers usually choose the 4-5.8m)

Straightness: 1/1000

ID roughness: RA 0.8-1.6 micron (max)

Technology: Cold drawn 

Scope: Honed tube for hydraulic cylinder, swivel crane, injection machine and construction machine application


Chemical Composition

Chemical Composition (%)

Steel Grade

C

Si

Mn

P

S

Cr

St45

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.250

St52(E355)

≤0.22

≤0.55

≤1.6

0.025

0.025

0.25

SAE 1026

0.22-0.28

0.15-0.35

0.60-0.90

0.040

0.050

/

27 SiMn

0.24-0.32

1.10-1.40

1.10-1.40

0.035

0.035

0.300

20#

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.250


Mechanical Properties

Delivery Condition

Cold drawn + stress-relieved (BK+S) (SR)

Cold fished (hard) (BK)

Steel Grade

Tensile strength (Rm Mpa)

Yield strength

Elogation A5%

Tensile strength (Rm Mpa)

Elogation A5%

20#

≥520

≥375

≥15

≥550

≥8

45#

≥600

≥520

≥10

≥640

≥5

E355(Q345B, St52)

≥600

≥520

≥14

≥640

≥5

25Mn

≥600

≥510

≥15

≥640

≥5

27SiMn

≥760

≥610

≥10

≥800

≥5


Tolerance

Inner diameter

Inner diameter tolerance

H8

H9

30

+0.033
0

+0.052
0

>30-50

+0.039
0

+0.062 

0

>50-80

+0.046
0

+0.074
0

>80-120

+0.054
0

+0.087
0

>120-180

+0.063
0

+0.100
0

>180-250

+0.072
0

+0.115
0

>250-315

+0.081
0

+0.130
0

>315-400

+0.089
0

+0.140
0


Product Processing


Production EQUIPMENT


Packaging & Shipping


Company Information


Qingzhou Longyue Hydraulic Machine Co.,Ltd was established in 2001, with more than 10 years import and export experences. Qingzhou Longyue Machine has been an influential exporter in the global metal products market. More than 160 customers from 26 countries and regions have established long-term business relationships with us.


Our main business range is listed as follows:

Carbon Seamless Steel pipe/tube

Hydraulic cylinder tube (Honed tube)

Hard chrome plated rod/bar/shaft (Piston rod)

We sincerely welcome friends from all over the world contact us to establish mutually beneficial business relationships.


http://www.lyhonedtube.com/

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