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 


25Mn Honed Tube

25Mn Honed Tube

As one of the professional 25mn honed tube suppliers in China, it is waiting for you to wholesale din1629 honed tube at low price form our factory. 25Mn DIN2391 Hydraulic Cylinder Hone Tube Product Specification 1.Types:honed tubes,skived and roller burnished tubes 2.Manufacture method: Cold...

Products Specification:

As one of the professional 25mn honed tube suppliers in China, it is waiting for you to wholesale din1629 honed tube at low price form our factory.

25Mn DIN2391 Hydraulic Cylinder Hone Tube



Product Specification


1.Types:honed tubes,skived and roller burnished tubes

2.Manufacture method: Cold rolled, Hydraulic cold drawn

3.Internal surface treatment method: honing or skiving and roller burnishing.

4.Size range:40mm*30mm-325mm*300mm

5.Standard&material:EN10305-1 E355,C45E,34CrMo4,42CrMo4,DIN2391-2 ST52, ST52.3,ST52.4,ASTM A519 SAE1020,SAE1045,SAE1026,SAE4130,SAE4140,etc.

6.Delivery condition:BK(+C),BKW(+LC),BKS(+SR),GBK(+A),NBK(+N).

7.OD tolerance:as per DIN2391-1,EN10305-1,ASTM A519 or as per customer's requirement.

8.ID tolerance: H7,H8,H9,H10 or given by customer.

9.Roughness of internal surface: 0.35um max for honed tubes, 0.25um max for skived&roller burnished tubes.

10.Wall Thickness tolerance (eccentricity):+/-5%





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 & Delivering


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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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