CK20 High Precision Seamless TubeProduct SpecificationSpecificationOD 33mm - 250mm(1"~16") with thickness of 3~30mmStandardGB/T8162,Website:http://www.leonhydraulic.com,GB/T8163 and DIN/JIS/ASTM standarda. DIN Standard    10#(ST37-2,ST35-8),20#(ST42,ST45-4/8), 45#(DIN CK45),16mn(ST52.4) etc.b. JIS Standard10#(STPG38,STS38,STB30,STB33,Stb35),20#(STPG42,STB42,  STS42,JIS S20C), 45#(JIS S45C), 16mn(STS49,STPT49) etc.c. ASTM/AISI Standard10#(ASTM a106/53 Gr.B,A192,A179-C), 20#(ASTM A106/53 Gr.B, A178-C,A210-A-1,A315-B,AISI1020), 45#(AISI1045), 16mn(ASTM A210-C) etc.Usagemechanical and also the hydraulic and Pneumatic cylinderpackingPlastic Caps and mark on the pipe  rust oil protected or wooden packageMethodcold drawn, hot rolling or hot expanding.Tolerate:OD +/-1%,Thickness  +12.5% / -10%,length  +/-2 cmMechanical 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≥10230Packing & Shipping1. In bulk (Large OD)2. In bundle with steel strips (Small OD)3. With woven cloth4. A per customer's requirementsAbout 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.