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Precision Steel Mechanical Honed Tube,ST52,E355 seamless honed steel tube
Specifications
Standard: EN10305-1,DIN2391-2
Material:ST52,E355
Delivery condition:BKS,+SR
Manufacture:cold drawn+honed
Size:40*30-325*300
Product Description
Commodity: ST52 E355 honed seamless steel tube
Standard specification&material: EN10305-1 E355 and equivalent standard and material like DIN2391-2 ST52.
Size range:40mm*30mm - 480mm*450mm
Manufacture method: cold rolled, hydraulic cold drawn
Delivery condition:
|
BK |
BKW |
BKS |
GBK |
NBK |
|
+C |
+LC |
+SR |
+A |
+N |
Internal surface treatment method: honing or skiving and roller burnishing
OD tolerance: as per EN10305-1
ID tolerance: H7,H8,H9,H10 or given by customer.
W.T tolerance(eccentricity): +/-5%
Bore roughness(Ra): 0.35um max.
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 |
Our Services
Based on the manufacturing facilities,the following services are available:
1. Machining
2. Skiving&roller burnishing
3. Drilling
4. Grinding
5. threading
6. Welding
7. Polishing
