Galvanized DIN 2391 ISO 8535 Precision Steel Tube for Automotive , Hydraulic
Product Description:
The tubes can be produced in the following delivery conditions:
BK (+C) Cold finished/hard (cold finished as drawn).
No heat treatment after the last cold forming process.
BKW (+LC) Cold finished/soft (lightly cold worked)
After the last heat treatment there is a light finishing pass (cold drawing).
BKS (+SR) Cold finished/stress relieve annealed.
After the final cold forming process the tubes are stress relieve annealed.
GBK (+A) Annealed.
After the final cold forming process the tubes are annealed in a controlled atmosphere.
NBK (+N) Normalized. (Mainly focus on)
After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.
| Product name | Precision Steel Tube |
| Place of Origin | Wuxi, China |
| Brand | ISO |
| Length | 4 meters/piece(can be cstomized) |
| Thickness | 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.5mm |
| Outer diameter | 28mm±0.2mm |
| Whether alloy | Non-alloy |
| Surface treatment | Chrome-plated |
| Application | Production line, workbench, production workshop |
| Color | Silver |
| Technology | ERW(Straight Seam Resistance Welded Pipe) |
| Section shape | Round |
| Can it be reused | Yes |
| Welding process | High frequency welding |
| Special Pipe | API Pipe |
| Packing | 10 pieces/bundle(package) |
Chemical Composition:
|
Steel grade |
Chemical composition, as a percentage by mass |
|||||
|
Symbol |
Material number |
C |
Si |
Mn |
P |
S |
|
St 30 Si |
1.0211 |
0.10 |
0.30 |
<=0.55 |
0.025 |
0.025 |
|
St 30 Al |
1.0212 |
0.10 |
0.05 |
<=0.55 |
0.025 |
0.025 |
|
St 35 |
1.0308 |
0.17 |
0.35 |
<=0.40 |
0.025 |
0.025 |
|
St 45 |
1.0408 |
0.21 |
0.35 |
<=0.40 |
0.025 |
0.025 |
|
St 52 |
1.0580 |
0.22 |
0.55 |
<=1.60 |
0.025 |
0.025 |
|
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%. |
||||||
Final Supply Conditions:
|
Designation |
Symbol |
Description |
|
Cold finished (hard) |
BK |
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
|
Cold finished (soft) |
BKW |
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
|
Cold finished and stress-relieved |
BKS |
Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
|
Annealed |
GBK |
The last cold forming process is followed by annealing in a controlled atmosphere. |
|
Normalized |
NBK |
The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Condition on Delivery:
|
Steel Grade |
BK |
BKW |
GBK |
NBK |
||||
|
Code No. |
Tensile Strength N/mm2 min |
Elongation at rupture N/mm2 min |
Tensile Strength N/mm2 min |
Elongation at rupture N/mm2 min |
Tensile Strength N/mm2 min |
Elongation at rupture N/mm2 min |
Tensile Strength N/mm2 min |
Elongation at rupture N/mm2 min |
|
St30 Si |
400 |
8 |
330 |
12 |
280 |
30 |
290-420 |
30 |
|
St30 Al |
400 |
8 |
330 |
12 |
280 |
30 |
290-420 |
30 |
|
St 35 |
440 |
6 |
370 |
10 |
315 |
25 |
340-470 |
25 |
|
St 45 |
540 |
5 |
470 |
8 |
390 |
21 |
440-570 |
21 |
|
St 52 |
590 |
4 |
540 |
7 |
490 |
22 |
490-630 |
22 |
Detailed Photo:
Factroy Pictures:
Pipe & Tube Processing:
Steel Pipe & Tube Application:
Packaging and Shipping:
Certificates:
FAQ:
Q1: ARE YOU FACTORY OR TRADER?
A1: Wuxi Sylaith Special Steel Co.,Ltd is a manufacturer of steel pipe and tube since 2010. We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.
Q2: WHICH MATERIAL/PRODUCTS YOU CAN PROVIDE?
A2: Seamless Stainless Steel Pipe / Tube, Seamless Carbon Stainless Steel Pipe /Tube,Galvanized Steel Tube witn any Shape and Welded pipes can also be available.
Q3: HOW TO GET A SAMPLE?
A3: FREE samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.
Q4:CAN YOU PRODUCE THE PRODUCTS ACCORDING TO MY OWN DRAWINGS?
A4: Yes, we can produce the products according to your drawings that will be most satisfy you.
Q5: HOW TO VISIT YOUR FACTORY?
A5: Most of the main cities have flights to Shanghai; you can take flight to Shanghai Putong/Hongqiao International Airport.
If you come from Hongkong, it will take 2 hours by flight (every day 5 flight around noon time).
