27SiMn Top Quality Hydraulic Cylinder Hone TubeProduct SpecificationCylinder ID: 40mm-400mm Thickness:≥4mmMaterial: 20#(A106B,Website:http://www.leonhydraulic.com,C20),45#(CK45),16Mn(ST52,E355),25Mn,27SiMnStandard: GB/T8713-88 ISO4394/1-1980(EN0305,DIN2391)StandardEN10305/DIN2391ISO4394/1-1980GB/T8713-88MaterialChina20# 45#(CK45) 16Mn(ST52) 25Mn 27SiMn etc.GermanSt42-2 DIN1626,St45-8 DIN17175,St45-4 DIN1629,CK45,St52 DIN1629AmericanASTM A53-B,ASTM A106-B,ASTM A178-C,ASTM A1045,ASTM A210-C etc.Lengthas your requirements max: 14m/45.9feetSurface treatmentBlack painting, black varnish, transparent oil, hot galvanized, 3PE, epoxy coating,BE,PE.etc.TechniqueSeamless & welded cold drawn /cold rolling /honingUsage1.hydraulic cylinder /pneumatic cylinder 2.Low and middle pressure fluid transportation pipeline 3.Casing Tube 4.Boiler Pipe 5.Petroleum and natural gas industry 6.Chemistry industry 7.Electric industryMechanical 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 Show Packing & ShippingAbout USApplicationThe honing and finished rolling tube, have been widely used in many industries, such as hydraulic cylinder, petrochemical sand pumping vessel, shipping, construction machinery, mining machine, filling machine and agricultural machine,etc.