1.Item name:SAE1020 precision finished cold-drawn seamless steel tube
2.Standard:DIN2391,DIN2445,EN10305,DIN1629,DIN1630
Cold-draw or cold-rolled Precision seamless steel tubes material:st45 ck45 hardness: st45 HB:165-200 ck45 HB:207-240 length≤11mm roughness of I.D :Ra≤1.6um Hardness form | Nominal diameter | O.D.(mm0 | I.D. (mm) | I.D. tolerance | Hole roundness | chromeplate | 28 | 41.28 | 28.58 | length≤11mm+0.03-0.05 | length≥8mm-0.05 -0.15 | 0.03 | 32 | 44.45 | 31.75 | 47.75 | 38 | 50.80 | 38.10 | 54.10 | 44 | 57.10 | 44.45 | 60.45 | 57 | 69.85 | 57.15 | 73.15 | 70 | 82.55 | 69.85 | -0.03 -0.15 | 0.05 | 85.85 | 83 | 95.25 | 82.55 | -0.15 -0.25 | 98.55 | 95 | 11.25 | 95.25 | 108 | 123.95 | 107.95 | permeability | 32 | 44.45 | 31.75 | -0.15-0.25 | | 0.05 | 38 | 50.80 | 38.10 | 44 | 57.15 | 44.45 | 57 | 69.85 | 57.15 | 70 | 82.55 | 69.85 |
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cold-drawn seamless steel pipe