Welded Cold Drawn EN10305-2 50mm Automotive Steel Tubing Cold Drawn Steel Pipe
Application:
for Auto industry
for machinery use
Oil Cylinder Tube
Motorcyle shock absorber
Auto shock absorber innder cylinder
Telescopic Cylinders
Size range
OD:6-80mm
WT:0.5-10mm
L:As requirements.
Supplying Steel Grade:
E155, E195, E235 E275, E355
Steel Number | Quality Level | Thickness/mm | Deoxidize Method | C(%)≤ | Si(%)≤ | Mn(%)≤ | P(%)≤ | S(%)≤ |
E185(Fe310) | 0 | - | - | - | - | - | - | - |
E235(Fe360) | A B
C D | ≤16 >16-25 ≤40 >40
| N - - E NE NE GF | 0.22 0.17 0.20 0.17 0.20 0.17 0.17 | - 0.40 0.40 0.40 0.40 0.40 0.40 | - 1.40 1.40 1.40 1.40 1.40 1.40 | 0.050 0.045 0.045 0.045 0.045 0.040 0.035 | 0.050 0.045 0.045 0.045 0.045 0.040 0.035 |
E275(Fe430) | A B C D | ≤40 >40 | - E NE NE GF | 0.24 0.21 0.22 0.20 0.20 | - 0.40 0.40 0.40 0.40 | - 1.50 1.50 1.50 1.50 | 0.050 0.045 0.045 0.040 0.035 | 0.050 0.045 0.045 0.040 0.035 |
E355(Fe510) | C D | ≤30 >30 ≤30 >30 | NE NE GF GF | 0.20 0.22 0.20 0.22 | 0.55 0.55 0.55 0.55 | 1.60 1.60 1.60 1.60 | 0.040 0.040 0.035 0.035 | 0.040 0.040 0.035 0.035 |
Steel Number | Yield Strengh/MPa | |||||||
≤16 | >16-40 | >40-63 | >63-80 | >80-100 | >100-150 | >150-200 | ||
E185(Fe310) | - | 185 | 175 | - | - | - | - | - |
E235(Fe360) | A B BNF C D | 235 235 235 235 235 | 225 225 225 225 225 | 215 - 215 215 215 | 215 - 215 215 215 | 215 - 215 215 215 | 195 - 195 195 195 | 185 - 185 185 185 |
E275(Fe430) | A B C D | 275 275 275 275 | 265 265 265 265 | 255 255 255 255 | 245 245 245 245 | 235 235 235 235 | 225 225 225 225 | 215 215 215 215 |
E355(Fe510) | C D | 355 355 | 345 345 | 335 335 | 325 325 | 315 315 | 295 295 | 285 285 |
Delivery Condition:
+C, +Lc, + SR, +A, +N
Production Method:
DOM, ERW+ Cold Drawn
ID Honing + Roller Burnish+ Skiving
Appearance:
The internal and external surface finish of the tubes is smooth, while the Weld Seam is somehow not visible or tangible.
The ID surface with roughness Ra≤4μm, the best ID smoothness we could reach Ra≤0.8μm
The inner surface can be measured and reported if this is requested by the purchaser before PO.