China En 10305-4 Seamless Steel Pipe E320 E235 E355 Steel Pipe Pecision Tube, Find details about China Cold Sized Tubes, En 10305-4 Seamless Steel Pipe from En 10305-4 Seamless Steel Pipe E320 E235 E355 Steel Pipe Pecision Tube
Steel grade | % of the mass | |||||
Steel symbol | Steel number | C max | Si max | Mn max | P max | S max |
E155 | 0,11 | 0,35 | 0,70 | 0,025 | 0,025 | |
E190 | 0,10 | |||||
E195 | 0,15 | 0,35 | 0,70 | 0,025 | 0,025 | |
E22 | 0,14 | |||||
E235 | 0,17 | 0,35 | 1,20 | 0,025 | 0,025 | |
E260 | 0,16 | |||||
E275 | 0,21 | 0,35 | 1,40 | 0,025 | 0,025 | |
E320 | 0,20 | |||||
E355 | 0,22 | 0,55 | 1,60 | 0,025 | 0,025 | |
E370 | 0,21 | |||||
E420 | 0,16 | 0,50 | 1,70 | 0,025 | 0,025 |
Size Tolerance | |||||
Name | Scope (mm) | GB Series(mm) | DIN series(mm) | Enterprise internal control standards (mm) | Special high-precision (mm) |
Outside diameter | 2-30 | ±0.10 | ±0.08 | ±0.05 | ±0.03 |
31-40 | ±0.15 | ±0.15 | ±0.05 | ±0.03 | |
41-50 | ±0.20 | ±0.20 | ±0.08 | ±0.03 | |
51-60 | ±0.25 | ±0.25 | ±0.08 | ±0.03 | |
Wall Thickness | 0.3-10 | ±10%; MIN±0.15 | ±10% | ±10%; MIN±0.05 | ±10%; MIN±0.03 |