PRODUCT DESCRIPTION

Internal and external chrome plating

High precision and high finish, the finish can reach ra0.2-0.4um.High pressure without oil leakage

The honing process is adopted to meet the requirements of the inner hole.It is mainly used to pneumatic or hydraulic components.

Smooth cut Tolerance H8 H9For outer cylinder of oil cylinder
It is mainly used to pneumatic or hydraulic components

Product Name
hydraulic cylinder tube /honed tube /seamless honed steel tube
Standard
GB/T3639-2000 DIN2391 EN10305 ASTM A519
Metarial
C20 CK45 Q355B Q355D E355/ST52 SAE1026 4130 4140 STKM 13C
Heat treatment
BK+S
Size
I.D:30mm-400mm
O.D:40mm-480mm
Length
Fixed length ,Random length or as requests of customers
Straightness
0.5-1/1000
ID roughness
RA 0.1-0.8micron(max)
Technology
Honed & SRB(SKIVED AND ROLLER BURNISHED)
Application
Honed tube for hydraulic cylinder,swivel crane,injection machine and construction machine application
Conservation
anti rust oiled inside and outside surface, plastic caps in both ends
Package
bundle with steel strip and knitting strip, or wooden case

HONED OR SRB TUBE TOLERANCE
Inner Diameter
H8
H9
H10

30mm
±0.033
±0.052
±0.084
5-30mm
30-50mm
±0.039
±0.062
±0.100
±0.080
50-80mm
±0.046
±0.074
±0.120

80-120mm
±0.054
±0.087
±0.140

120-180mm
±0.063
±0.100
±0.160

180-250mm
±0.072
±0.115
±0.185

250-315mm
±0.081
±0.130
±0.210

 

Steel Grade
C
SI
Mn
P
S
Cr
Ni
Cu
20#
0.17-0.24
0.17-0.37
0.35-0.65
0.035
0.035
0.250
0.250

45#
0.42-0.50
0.17-0.37
0.50-0.80
0.035
0.035
0.250
0.250

Q345B
≤0.2
≤0.5
1.00-1.60
0.030
0.030
0.030
0.250
0.08
Q345D
≤0.2
≤0.5
1.00-1.60
0.030
0.030
0.250
0.250
0.15
25Mn
0.22-0.29
0.17-0.37
0.70-1.00
0.035
0.035



27SiMn
0.22-0.32
1.10-1.40
1.10-1.40
0.035
0.035
0.300
0.300

E355
0.2
≤0.55
≤1.6
0.025
0.025



Steel Grade
Rm Mpa
ReH Mpa
Elonggation
cold finishedRm Mpa
cold finished Elonggation
20#
≥520
≥375
≥15
≥550
≥8
45#
≥600
≥520
≥10
≥640
≥5
16Mn(Q345B1D)
≥600
≥520
≥14
≥640
≥5
25Mn
≥600
≥510
≥15
≥640
≥5
27SiMn
≥760
≥610
≥10
≥800
≥5
St45
≥520
≥375
≥15
≥550
≥5
E355(st52)
≥600
≥520
≥14
≥640
≥5
SAE102
≥600
≥510
≥15
≥640
≥5
Working method
range
ID
H8
H9
H10
cold drawn
25-250
30-50
+0.0390
+0.0620
+0.1000
cold rolling
25-150
50-80
+0.0460
+0.0740
+0.1200
cold drawn-honed
40-250
80-120
+0.0540
+0.0870
+0.1400
cold drawn-SRB
50-250
120-180
+0.0630
+0.1000
+0.1600
cold drawn-polished
40-250
180-250
+0.0720
+0.1150
+0.1850
cold drawn-polish- SRB
50-250
as required
as required
as required
as required


PRODUCT DISPLAY

WAREHOUSE STORAGE 


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PACKING AND DELIVERY 


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