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CK20 High Quality Seamless Hone TubeHoning tube and rolling tube inside and outside wall oxide layer,Website:://.leonhydraulic.com, to withstand high pressure without leakage, high-precision, high-quality finish, cold deformation, flaring, flattening without cracks a bit, so mainly used to produce pneumatic or hydraulic components products, such as cylinder or cylinders, which can be seamless. Product ParametersCylinder ID: 40-400mmWall thickness: 3-50mmMaterial: 20# 45#(CK45) 16Mn(ST52) 25Mn 27SiMn Standard: GB/T8713-88 GB/T3639-2000 DIN2391 EN10305Processing formCylinder ID (mm)Length (m)Straightness (mm/m)Tolerance on IDRoughness (μm)Cold drawn30-250≤13m0.2-0.5H9-H110.8-1.6Cold rolling30-100≤12m0.2-0.5H9-H100.8-1.6Honed40-800≤7m0.2-0.3H7-H90.4-0.8Mechanical PropertiesSteel GradeTensile strength(σb N/mm2)Yield strength(σs N/mm2)Elongation(δ %)Hardness
HB 20#≥520≥470≥1217545#(CK45)≥600≥520≥1220716Mn(ST52)≥600≥520≥1519025Mn≥600≥510≥1519527SiMn≥800≥720≥10230Dimension ToleranceSize of ID (mm)
ID ToleranceTolerance of wall thicknessH7 H8 H9 H10 H11 30 0.021
0 0.033
0 0.052
0 0.084
0 0.130
0±5%>30-50 0.025
0 0.039
0 0.062
0 0.100
0 0.160
0>50-80 0.030
0 0.046
0 0.074
0 0.120
0 0.190
0>80-120 0.035
0 0.054
0 0.087
0 0.140
0 0.220
0>120-180 0.040
0 0.063
0 0.100
0 0.160
0 0.250
0>180-250 0.046
0 0.072
0 0.115
0 0.185
0 0.290
0>250-315 0.052
0 0.081
0 0.130
0 0.210
0 0.320
0>315-400 0.057
0 0.089
0 0.140
0 0.230
0 0.360
0Product ProcessPacking