Hydraulic Tubes
Hydraulic Tubes
product details:
Material: St37, St52, E355, CK45 and so on
ID size: from 50 to 250mm
ID tolerance: H8
Roughness: 0.4 Max
Straightness: ≤ 0.6/1000
Tolerance EXT: DIN2391, EN10305, GB/T 1619
Protection: Anti-rust oil on inside and outside surface, plastic caps in both ends.
Delivery Condition: BK, BK+S, GBK, NBK.
Purpose: for hydraulic cylinder or pneumatic cylinder
Product Standards:
Material Performance：
|
Steel name
|
C max
|
Si max
|
Mn
|
P max
|
S max
|
|---|---|---|---|---|---|
|
St 35
|
0.17
|
0.35
|
≥0.40
|
0.025
|
0.025
|
|
St 45
|
0.21
|
0.35
|
≥0.40
|
0.025
|
0.025
|
|
St 52
|
0.22
|
0.55
|
≤1.60
|
0.025
|
0.025
|
|
Steel grade
|
Chemical composition:
|
||||||
|---|---|---|---|---|---|---|---|
|
Steel name
|
Steel number
|
C max
|
Si max
|
Mn
|
P max
|
S max
|
Al min
|
|
E215
|
1.0212
|
0.10
|
0.05
|
0.70
|
0.025
|
0.025
|
0.025
|
|
E235
|
1.0308
|
0.17
|
0.35
|
1.20
|
0.025
|
0.025
|
-
|
|
E355
|
1.0580
|
0.22
|
0.55
|
1.60
|
0.025
|
0.025
|
-
|
|
Steel grade
|
BK
|
BKW
|
BKS
|
GBK
|
NBK
|
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tensile strength
Rm
N/mm
min
|
伸长率%
min
|
Tensile strength
Rm
N/mm
min
|
Elongation%
min
|
tensile strength
Rm
N/mm
min
|
Yield Strength
ReH
N/mm
min
|
%
min
|
Tensile strength
Rm
N/mm
min
|
Elongation%
min
|
tensile strength
Rm
N/mm
min
|
Yield Strength
ReH
N/mm
min
|
Elongation
%
min
|
|
|
St35
|
480
|
6
|
420
|
10
|
420
|
315
|
14
|
315
|
25
|
340-470
|
235
|
25
|
|
St45
|
580
|
5
|
520
|
8
|
520
|
375
|
12
|
390
|
21
|
440-570
|
255
|
21
|
|
St52
|
640
|
4
|
580
|
7
|
580
|
420
|
10
|
490
|
22
|
490-630
|
355
|
22
|
|
Steel grade
|
Minimum values for the delivery condition
|
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Steel name
|
Steel number
|
+ C
|
+ LC
|
+ SR
|
+ A
|
+ N
|
||||||||
|
Rm Mpa
|
A%
|
Rm Mpa
|
A%
|
Rm Mpa
|
ReH Mpa
|
A%
|
ReH Mpa
|
A%
|
Rm Mpa
|
ReH Mpa
|
A%
|
|||
|
E215
|
1.0212
|
430
|
8
|
380
|
12
|
380
|
280
|
16
|
280
|
30
|
290-430
|
215
|
30
|
|
|
E235
|
1.0308
|
480
|
6
|
420
|
10
|
420
|
350
|
16
|
315
|
25
|
340-480
|
235
|
25
|
|
|
E355
|
1.0580
|
640
|
4
|
580
|
7
|
580
|
450
|
10
|
450
|
22
|
490-630
|
355
|
22
|
|
Editor：Ali
picture:Ali
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