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 


27SiMn Rolled Tube

27SiMn Rolled Tube

As one of the professional 27simn rolled tube suppliers in China, it is waiting for you to wholesale 27simn rolled tube at low price form our factory. 27SiMn Rolled 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 27simn rolled tube suppliers in China, it is waiting for you to wholesale 27simn rolled tube at low price form our factory.

27SiMn Rolled Tube



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





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




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.