25Mn Rolled Tube
25Mn Top Quality Seamless Rolling Tube H8Product SpecificationCylinder ID: 40mm-400mm Thickness:≥4mmMaterial:20#(A106B,Website:),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
0Our Advantages 1):Durable,strict quality management and control,we are an ISO9001 enterprise.2):High precision machining equipment guarantee good quality.3):Smooth surface.No defects.Continuous skill improvements.4):We have design team to develop new skill and new products to meet customer’s requirements 5):Good after-service,when customers have problems during use,we will surely try our best to solve them.6):High professional employees have good emergency-dealing ability during production.7):Surface treatment can be nickel,galvanized and painted,or based on the requirements of customers.Packing & 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.
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