Honed tube
Detailed Product Description
| Honed tube | ||||||
| Steel grade :ST45(20#) ck45(45#) ST52(16Mn) 27SiMn 25Mn 34CrMo4 | ||||||
| Processing | Cylinder diameter/mm | Length | Straightness | Size accuracy | Wall thickness/mm | Inner bore |
| roughness | ||||||
| Honed tube | 48~325 | ≤10m | 0.3~0.8mm/m | H8~H9 | ±10% | 0.3~0.8um |
| Mechanical Property | ||||||
| Material | Tensile | Yield | Elongation | Hardness | ||
| strength | strength | |||||
| 20# | 530 N/mm2 | 505σsN/mm2 | 12δs% | 175HB | ||
| 45# | 660 σN/mm2 | 630σsN/ mm2 | 6δs% | 207HB | ||
| 16Mn | 595 σN/mm2 | 570σsN/ mm2 | 9δs% | 190HB | ||
| 27SiMn | 840 σN/mm2 | 805σsN/ mm2 | 7.5δs% | 230HB | ||
| Honed tube size tolerance | ||||||
| ID size | ID deviation (mm) | |||||
| H7 | H8 | H9 | H10 | |||
| 30 | +0.021 | +0.033 | +0.052 | +0.084 | ||
| 0 | 0 | 0 | 0 | |||
| >30~50 | +0.025 | +0.039 | +0.062 | +0.100 | ||
| 0 | 0 | 0 | 0 | |||
| >50~80 | +0.030 | +0.046 | +0.074 | +0.120 | ||
| 0 | 0 | 0 | 0 | |||
| >80~120 | +0.035 | +0.054 | +0.087 | +0.140 | ||
| 0 | 0 | 0 | 0 | |||
| >120~180 | +0.040 | +0.063 | +0.100 | +0.160 | ||
| 0 | 0 | 0 | 0 | |||
| >180~250 | +0.046 | +0.072 | +0.115 | +0.185 | ||
| 0 | 0 | 0 | 0 | |||
| >250~315 | +0.052 | +0.081 | +0.130 | +0.210 | ||
| 0 | 0 | 0 | 0 | |||
| >315~400 | +0.0527 | +0.089 | +0.140 | +0.230 | ||
| 0 | 0 | 0 | 0 | |||
Marking:trade mark and specification are stenciled on each tube.
Certificates:Mill certificate,with chemical analysis and mechanical tests can be issued and delivered with the tubes.
Special requirements can be agreed for other types of steel and /or other conditions with particular mechanical and technological properties.
