
Name: honed tubes, honing pipe, hydraulic cylinder tubes, pneumatic cylinder tubes, honed pipe, honing tube, seamless
honed steel tube, precision tubes, cold drawn honed tubes, skived tubes, skived and roller burnished tubes, skived pipes,
SRB tube, SRB pipe, hydraulic SRB tube, hydraulic cylinder skived tubes
Popular standard and steel grade:
EN10305-1
|
E355 E235 E410 E470 C45E
|
DIN2391-1
|
ST52 ST45 ST52.3
|
ASTM A519
|
SAE1020 SAE1045 SAE1026
|
GB/T
|
20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn
|
Application: hydraulic cylinder, pneumatic cylinder, lifting jack, cylinder barrel
Manufacture Method: cold drawn, cold rolled, Hot rolled+Deep Hole Boring
Heat Treating Method/Delivery Condition:
BK
|
BKS
|
GBK
|
NBK
|
Q+T
|
+C
|
+SR
|
+A
|
+N
|
Q+T
|
Cold drawn
|
Stress relieved
|
Annealed
|
Normalized
|
QUENCHED + TEMPERED
|
Hydraulic & pneumatic tube size and parameters:
Manufacture
method
|
Cylinder ID (mm) |
Length
(m)
|
Straightness
(mm/m)
|
Tolerance
on ID
|
Tolerance
on WT
|
Roughness
(μm)
|
Cold drawn | 40-420 | ≤16M | 0.2-0.5 |
Depends on
requirement
|
±8% | 0.8-1.6 |
Cold rolled | 30-100 | ≥14M | 0.2-0.5 |
Depends on
requirement
|
±5% | 0.8-1.2 |
Cold drawn-honed | 40-420 | 14M | 0.2-0.3 | H8-H9 | ±8% | 0.2-0.8 |
Cold drawn-skived & burnished | 40-300 | 9M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
Deep hole boring- honed | 50-1000 | 12M | 0.2-0.3 | H8-H9 | ±8% | ≤0.8 |
Deep hole boring- skived | 50-300 | 9M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
Mechanical property:
Final Supply
Condition
|
Cold finished
(Hard)(BK)
|
Cold drawn and stress-relieved (BK+S or + SR)
|
Hardness HB
|
|||
Parameters
|
T.S
obN/mm²
|
Elongation
δ5%
|
T.S
obN/mm²
|
Y.S
OsN/mm²
|
Elongation
δ5%
|
|
20# (A106B, ST45, E255)
|
>=550
|
>=8
|
>=520
|
>=375
|
>=12
|
175
|
45#(CK45)
|
>=650
|
>=5
|
>=600
|
>=500
|
>=10
|
190
|
Q345B(ST52, E355)
|
>=640
|
>=5
|
>=600
|
>=520
|
>=15
|
190
|
25Mn
|
>=640
|
>=5
|
>=600
|
>=510
|
>=15
|
195
|
27SiMn
|
>=840
|
>=5
|
>=720
|
>=600
|
>=10
|
210
|
Material
|
C%
|
Mn%
|
Si%
|
S%
|
P%
|
20#
|
0.17-0.23
|
0.35-0.65
|
0.17-0.37
|
≤0.035
|
≤0.035
|
ST45
|
≤0.21
|
≥0.4
|
≤0.35
|
≤0.025
|
≤0.025
|
E255
|
≤0.21
|
0.4-1.1
|
≤0.35
|
≤0.025
|
≤0.025
|
45#
|
0.42-0.50
|
0.50-0.80
|
0.17-0.37
|
≤0.035
|
≤0.035
|
Q345B
|
≤0.20
|
≤1.70
|
≤0.50
|
≤0.035
|
≤0.035
|
E355
|
≤0.22
|
≤1.6
|
≤0.55
|
≤0.025
|
≤0.025
|
ST52
|
≤0.22
|
≤1.6
|
≤0.55
|
≤0.04
|
≤0.04
|
25Mn
|
0.22-0.29
|
0.70-1.0
|
0.17-0.37
|
≤0.035
|
≤0.035
|
27SiMn
|
0.24-0.32
|
1.10-1.40
|
1.10-1.40
|
≤0.035
|
≤0.035
|
ID
|
Tolerance for ID (μm)
|
|||
H7
|
H8
|
H9
|
H10
|
|
30
|
+21/0
|
+33/0
|
+52/0
|
+84/0
|
>30-50
|
+25/0
|
+39/0
|
+62/0
|
+100/0
|
>50-80
|
+30/0
|
+46/0
|
+74/0
|
+120/0
|
>80-120
|
+35/0
|
+54/0
|
+87/0
|
+140/0
|
>120-180
|
+40/0
|
+63/0
|
+100/0
|
+160/0
|
>180-250
|
+46/0
|
+72/0
|
+115/0
|
+185/0
|
>250-315
|
+52/0
|
+81/0
|
+140/0
|
+210/0
|
>315-400
|
+57/0
|
+89/0
|
+170/0
|
+230/0
|
Part of size list (ID*OD)
40*50 |
100*127 |
240*273 |
40*55 |
110*130 |
250*266 |
50*60 |
120*140 |
250*280 |
50*63 |
120*145 |
250*300 |
60*70 |
125*140 |
280*323 |
60*73 |
125*145 |
280*325 |
63*73 |
140*165 |
300*320 |
63*76 |
140*168 |
300*356 |
70*80 |
150*180 |
320*340 |
70*82 |
160*184 |
320*356 |
70*85 |
160*194 |
320*370 |
80*90 |
170*200 |
350*370 |
80*92 |
180*210 |
400*420 |
80*95 |
200*216 |
|
80*100 |
200*220 |
|
90*102 |
200*232 |
|
90*105 |
200*245 |
|
100*114 |
220*250 |
|
100*121 |
220*273 |
|
Packaging And Transportation
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