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High Precision Honing Steel Pipe for Hydraulic Cylinder by St52, Q345b

China High Precision Honing Steel Pipe for Hydraulic Cylinder by St52, Q345b, Find details about China Steel Pipe, Honing Pipe from High Precision Honing Steel Pipe for Hydraulic Cylinder by St52, Q345b

Model NO.
IR-B
Size
30mm~416mm
Length
Fixed Length, by Random
End Processing
Plain Ends
Surface
Bare Pipe, Anti-Rust Painting
Steel Material
St52, Q345b, 27simn, 15CrMo, 40cr, etc
Trademark
Iron&steel
Transport Package
Standard Seaworthy Packing
Specification
ASTM, DIN, GB/T
Origin
China
HS Code
73045910
Model NO.
IR-B
Size
30mm~416mm
Length
Fixed Length, by Random
End Processing
Plain Ends
Surface
Bare Pipe, Anti-Rust Painting
Steel Material
St52, Q345b, 27simn, 15CrMo, 40cr, etc
Trademark
Iron&steel
Transport Package
Standard Seaworthy Packing
Specification
ASTM, DIN, GB/T
Origin
China
HS Code
73045910
High precision honing pipe  can be produced according to the demands of costumers that the degree of precision can reach H8/H9. Burnishing and honing service can be provided depending on the roughness requirement of inner diameter.
The honing pipe is used for the hydraulic cylinder making.
Used as the pipes on the heated side of low and medium pressure boilers(normally with operating pressure not higher than 5.88Mpa and
operating temperature below 450 oc);as the pipes on the heated sides of high·pressure boilers,economizers,overheaters,reheaters and pipes
for petrochemical industry(with the operating pressure above 9.8Mpa and operating temperature ranging between 450~C~650~C
High Precision Honing Steel Pipe for Hydraulic Cylinder by St52, Q345bHigh Precision Honing Steel Pipe for Hydraulic Cylinder by St52, Q345b
High Precision Honing Steel Pipe for Hydraulic Cylinder by St52, Q345b
High Precision Honing Steel Pipe for Hydraulic Cylinder by St52, Q345b
Specifications of major steel material:

Processing form
I.D.mm
Length
Straightness
I.D.tolerance
I.D.Roughness(RA)

Cold-rolled
30-100
≤12M
 
0.3-1.0/1000
H8-H10
0.4-1.6um

Cold-drawn
30-250
≤12M
H8-H10
0.8-1.6um

Hone
40-500
≤12M
H8-H9
0.4-0.8um

SRB
50-250
≤9M
H8
0.1-0.4um

 Tolerance of ID and WT
 

Size of inside
Diameter(mm)
                     ID Tolerance
Tolerance of wall thickness
 

30
+0.0330
+0.0520
+0.0840
 
 
 
<120mm(OD)              ±5%
>120mm up to 210mm±7.5%
>210mm                     ±10%
 
 
 
 

>30-50
+0.0390
+0.0620
+0.1000

>50-80
+0.0460
+0.0740
+0.1200

>80-120
+0.0540
+0.0870
+0.1400

>120-180
+0.0630
+0.1000
+0.1600

>180-250
+0.0720
+0.1150
+0.1850

>250-315
+0.0810
+0.1300
+0.2100

>315-400
+0.0890
+0.1400
+0.2300

Length and cut tolerance
 
Length ≤ 500mm , +2mm
> 500mm ≤ 2000mm, +3mm
> 2000mm ≤ 5000mm, +5mm
> 2000mm ≤ 7000mm, +10mm
 
Standard:DIN 2391,EN10305
Material: St45,St52,E355
 
Chemical composition
 

Steel grade
Chemical composition,%

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

SAE1026
0.22-0.28
0.15-0.35
0.60-0.90
0.040
0.050
/

27SiMn
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

  
9. Mechanical Properties
 

Delivery condition
BK
Cold finished(hard)
BKS
Cold drawn and stress-relieved

Steel grade
Rm Mpa
Elongation
A5(%)
Rm MPa
ReH MPa
Elonggation
A5(%)

ST45
≥550
≥5
≥520
≥375
≥15

ST52(E355)
≥640
≥5
≥600
≥520
≥14

SAE1026
≥640
≥5
≥600
≥510
≥15

16Mn
≥640
≥5
≥600
≥520
≥14

20#
≥550
≥8
≥520
≥375
≥15

 
Tube ends
 
Tube ends shall be cut nominally square to the axis and free from burs
 
11.Delivery condition:BKS
Appearance
 
Tube shall have a smooth internal and external surface consistent with cold working  process, tube inner surface should be free from rust, scratches and other surface
irregularities.

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