27SiMn Competitive Price High Precision TubeProductionASTM A106 A53 5L GR.B 325*17MM  seamless steel pipeStandardAPI 5L,Website:://.leonhydraulic.com, ASME, ASTM,  DIN, GB8162, GB8163, GB5310,etc.Out Diameter1/8"~20",6mm~720mmWall ThicknessSCH5~SCH140,STD,XS,XXS,2mm~100mmMaterialASTM A106 GRB/ A53 GRB/ API 5L X42,X52,X60,X65,X70GRB/    API 5 CT/ ST42/ST37/ ST52.Q235/Q345/A179etc.Length1-12m or as customers requiredSurface treatmentBlack painting, black varnish, transparent oil, epoxy coating, etcTechniqueSeamlessUsage1.Low and middle pressure fluid transportation pipeline 2.Casing Tube 3.Boiler Pipe 4.Petroleum and natural gas industry 5.Chemistry industry 6.Electric industryPackage1.Bundle packing. 2.Beveled end or plain end or vanished as buyer's required. 3.Marking: as per customer's requests. 4.Painting varnish coating on the pipe. 5.Plastic caps at ends.Supply1.Seamless steel pipe  2.steel casing  3.tubing  4.hot-rolled steel pipeMechanical 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≥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.