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Hot Rolled Steel Tube / Seamless Round Tube With Plastic Caps
Quick Detail:
Standard:DIN 1629
Steel Grde:E355
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)
Standard Packing: Beveled end or pained ends/black painting/ plastic caps/ in bundles
Inspection and Test:
Chemical Composition Inspection, Tensile Test( Y.S Mpa, T.S Mpa, E.L), Impact test, Nondestructive Test, Hydrostatic Test.
| Chemical composition | |||||||||||||
| Item | Grade | Chemical composition.% | |||||||||||
| C max | Si max | Mn | P max | S max | |||||||||
| St35/E35 | 1.0308 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 | |||||||
| St45 | 1.0408 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 | |||||||
| St52/E355 | 1.0508 | 0.22 | 0.55 | ≤1.60 | 0.025 | 0.025 | |||||||
| The following alloying may be added:Nb≤0.03%,Ti≤0.03%,V≤0.05%,Nb+TI+v≤0.05% | |||||||||||||
| Mechanical properties | |||||||||||||
| Category | Delivery state minimum value | ||||||||||||
| item | grade | Gold finished (hard)(BK) | Gold finished (SOFT)(BKW) | Gold finished and stress-relieved(BKS) | annealed(GBK) | normalized(NBK) | |||||||
| Rm Mpa | A% | Rm Mpa | A% | Rm Mpa | ReH Mpa | A% | Rm Mpa | A% | Rm Mpa | ReH | A% | ||
| 1 | St35/E235 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340~470 | 235 | 25 |
| 2 | St45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440~570 | 255 | 21 |
| 3 | St52/E355 | 640 | 4 | 580 | 7 | 580 | 450f | 10 | 450 | 22 | 490~630 | 355 | 22 |
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