ST52 Honed Tube
ST52 E355 Seamless Hone Tube
Product Specification
1. Standard specification&material: EN10305-1 E355 and equivalent standard and material like DIN2391-2 ST52.
2. Size range: 40mm*30mm - 480mm*450mm
3. Manufacture method: cold rolled,Website:, hydraulic cold drawn
4. Delivery condition:
BK
BKW
BKS
GBK
NBK
+C
+LC
+SR
+A
+N
5. Internal surface treatment method: honing or skiving and roller burnishing
6. OD tolerance: as per EN10305-1
7. ID tolerance: H7,H8,H9,H10 or given by customer.
8. W.T tolerance(eccentricity): +/-5%
9. Bore roughness(Ra): 0.35um max.
Mechanical Properties
Chemical composition requirement of E355 material:
Element
C
Si
Mn
P
S
Content (%)
0.22% max
0.55% max
1.60% max
0.025% max
0.025% max
Mechanical properties of E355 tubes:
BK
BKW
BKS
GBK
NBK
Tensile strength:
640 Mpa min
580 Mpa min
580 Mpa min
450 Mpa min
490Mpa-630Mpa
Yield strength
-
-
450 Mpa min
-
355 Mpa min
Elongation
4% min
7% min
10% min
22% min
22% min
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
Our Advantages
1): Durable, strict quality management and control, we are an ISO9001 enterprise.
2): High precision machining equipment guarantee good quality.
3): Smooth surface. No defects. Continuous skill improvements.
4): We have design team to develop new skill and new products to meet customer’s requirements
5): Good after-service, when customers have problems during use, we will surely try our best to solve them.
6): High professional employees have good emergency-dealing ability during production.
7): Surface treatment can be nickel, galvanized and painted, or based on the requirements of customers.
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.
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