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Seamless Precision Steel Tubes
1)Standard: DIN2391, EN10305-1, EN10305-4
2) Steel grade: St35, St37, St45, St52, E235, E355
3) Condition: GBK(+A)NBK(+N), BK(+C), BKS
4) Size: OD3-60mm. WT0.5-8mmMax length 12meters.
5) Usage: Cylinders of machinery, high pressure tubing, automotive etc.
6)Characteristic: High cleanness, smooth on the both surface, chemical composition and mechanical properties fully according with standards.
7) Surface Finish: Zinc coating, black phosphated, oiled, or bright.
8) Supply Ability: 9000 metric Ton Per Year
9) Packing: Hexagon bundled, steel strip bundle, knitting strip bundle or steel box
10) Payment: T/T & L/C
11) Minimum order: 10Tons, (some items exceptive)
12) Delivery time: Normally 30-45Days
| Grade | Chemical Composition% | ||||
| C max | Si max | Mn | P max | S max | |
| St 35 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| St 45 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| St 52 | 0.22 | 0.55 | ≤1.60 | 0.025 | 0.025 |
Mechanical Properties(Mpa):
| Steel grade | BK | BKW | BKS | GBK | NBK | |||||||
| Tensile Strength min | Elongation % min | Tensile Strength min | Elongation % min | Tensile Strength min | Yield Strength min | Elongation % min | Yield Strength min | Elongation % min | Tensile Strength min | Yield Strength min | Elongation % min | |
| St35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340-470 | 235 | 25 |
| St45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 235 | 21 |
| St52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490-630 | 355 | 22 |
Cylinders Seamless Precision Steel Tubes
