DIN2391 ST37 Shock Absorber Precision Seamless Steel Tube 6-114.3mm OD for Automotive Hydraulic Systems
Price:
Negotiable
MOQ:
5TONS
Delivery Time:
30DAYS
Brand:
Joyruns
Product Description
DIN2391 ST37 Shock Absorber Precision Seamless Steel Tubes
High-precision seamless steel tubes manufactured to DIN2391 standards, specifically engineered for automotive shock absorber systems and hydraulic applications.
Technical Specifications
Outer Diameter: 6mm - 114.3mm
Wall Thickness: 1mm - 15mm
Maximum Length: 12 meters
Type: Seamless construction
Available Grades
ST35, ST37, ST45, ST52, ST35.2, ST52.2
Delivery Conditions
BK(+C), BKS(+SR), BKW(+LC), GBK(+A), NBK(+N)
Primary Applications
Automotive shock absorber systems
Hydraulic systems and components
Precision machinery parts for automotive applications
Cylinder manufacturing and hydraulic cylinders
Chemical Composition Specifications
| Grade | Material No. | C max (%) | Mn (%) | P max (%) | S max (%) | Si max (%) |
|---|---|---|---|---|---|---|
| ST35 | 1.0308 | 0.17 | ≥0.4 | 0.025 | 0.025 | 0.35 |
| ST45 | 1.0408 | 0.21 | ≥0.4 | 0.025 | 0.025 | 0.35 |
| ST52 | 1.0508 | 0.22 | ≤1.6 | 0.025 | 0.025 | 0.55 |
Mechanical Properties
| Grade | Condition | Rm (MPa) | ReH (MPa) | A (%) |
|---|---|---|---|---|
| ST35 | Cold Finished (Hard) BK | 480 | - | 6 |
| Cold Finished (Soft) BKW | 420 | - | 10 | |
| Cold Finished & Stress-Relieved BKS | 420 | 315 | 14 | |
| Annealed GBK | 315 | - | 25 | |
| Normalized NBK | 340-470 | 235 | 25 | |
| ST45 | Cold Finished (Hard) BK | 580 | - | 5 |
| Cold Finished (Soft) BKW | 520 | - | 8 | |
| Cold Finished & Stress-Relieved BKS | 520 | 375 | 12 | |
| Annealed GBK | 390 | - | 21 | |
| Normalized NBK | 440-570 | 255 | 21 | |
| ST52 | Cold Finished (Hard) BK | 640 | - | 4 |
| Cold Finished (Soft) BKW | 580 | - | 7 | |
| Cold Finished & Stress-Relieved BKS | 580 | 450 | 10 | |
| Annealed GBK | 450 | - | 22 | |
| Normalized NBK | 490-630 | 355 | 22 |
Packaging & Quality Assurance
Packaged in protective bundles with plastic paper wrapping or secure wooden boxes to ensure product integrity during transportation and storage.
Our DIN2391 precision seamless steel tubes offer superior quality and reliable performance at competitive pricing, making them the ideal choice for demanding automotive and industrial applications.
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Get in Touch
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Company
Changzhou Joyruns Steel Tube CO.,LTD
Location
No.143 Qingyang North road,Tianning district. Changzhou
Contact Person
Lee