Honed Tubes - Cold Finished, High Rigidity Frame And Rust Resistant | Ideal For Hydraulic And Pneumatic Cylinders

Our company is well known in the market for manufacturing and exporting wide gamut of Honed Tubes. The offered tubes are manufactured using superior grade raw materials and newest technology keeping in mind international standards. Owing to its rust proof nature and dimensional accuracy, these Honed Tubes are extensively used for hydraulic cylinders and pneumatic cylinders that are used in various machines as components.    Features                             Sturdy & high rigidity frame Durable finish standards Smooth surface finish   Hydraulic Honed TubesMechanical Property  Supply condition Steel grade   Cold finished Hard)( BK)   Cold drawn (BK+S) and stress-relieved    Hardness HB   Tensile strength MPa  Elongation ( %)  Tensile strength MPa  Yield strength MPa  Elongation ( %)  20#  >550 >8 >520 >375 >12  175  45#  >650 >5 >600 >520 >12  207  ST52  >640 >5 >600 >520 >15  190  25Mn  >640 >5  >600 >510 >15  195  27SiMn  >840 >5  >800 >720 >10  230 Chemical Composition  Steel Grade C Si Mn P S Cu Ni Cr  V  Nb  Ti  Al  20#  0.17~0.23  0.17~0.37 0.35~0.65  0.035  0.035 0.25  0.25  0.25  /  /  / /  45#  0.42~0.50  0.17~0.37 0.50~0.80  0.025  0.025  0.20  0.20  0.25  /  /  /  /  25Mn  0.22~0.29  0.17~0.37 0.70~1.00  0.03  0.03  0.20  0.20  0.25  /  /  /  /  27SiMn  0.24~0.32  1.10~1.40 1.10~1.40  0.035  0.035  0.30  0.30  0.30  /  /  /  /  Q345B(St52) 0.20   0.55 1.00~1.60  0.04  0.04  /  /  /  0.02~0.15  0.015~0.06 0.02~0.20  /  Q345D(St52) .18   0.55 1.00~1.60  0.03  0.03  /  /  / 0.02~0.15  0.15~0.06  0.02~0.20 0.15