25Mn Precision Tube

25Mn Best Selling High Precision Seamless 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 Properties  Steel GradeTensile strength(σb N/mm2)Yield strength(σs N/mm2)Elongation(δ %)Hardness HB   20#≥520≥470≥1217545#(CK45)≥600≥520≥12207 16Mn(ST52)≥600≥520≥1519025Mn≥600≥510≥15195  27SiMn≥800≥720≥10230Why Choose US 1. Our quality is the top five in China. Raw material is mainly from some famous refinery steel mills, such as BAO STEEL, Tianjin, and Chengdu etc, which are the best and largest raw material manufacturers in China.2. We have been through ISO9001:2008 international quality system certification.Warranty period for our honed tubes and chrome bars is 2 years. For some special or important customers, the period is 5 years.3. High Precision:Honed tube (Roughness of tube is 0.2μm and straightness is less than 0.15/1000), Product details are completely according to International Standard,4. Package: banding with steel strips, braiding parcel at outside5. Conservation: Anti rust oiled coating on the inside and outside of the surface,plastic caps at both ends.About 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.