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
max. | Si
max. | Mn | P
max. | S
max. |
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).
