Qingdao Ironsteel International Trading Co., Ltd.  

Product Name: Precise Cold Drawn Seamless Steel Tube for Mechanical Processing Model NO.: IR-C Diameter: 18mm~416mm Wall Thickness: 0.8mm~40mm Surface Treatment: Pickling, Phosphorization, Polishing Certification: ISO, CE Process: Cold Drawn Connection Method: Seamless Material: Carbon Steel, Alloy Steel, Stainless Steel Type: Carbon Steel, Alloy Steel, Stainless Steel Outer Diameter: 18mm~416mm Length: 6meters, 9meters, 12meters, Random Length Surface: Annealed, Pickling, Straightening Tolerance of Size: +/- 0.05mm Trademark: Iron&steel Transport Package: Bundled, Wrapped, Wooden Cased. Specification: GB/T8163, JIS, DIN Origin: China HS Code: 73041990 Product Description oleraance of size:±0.05mm(outer diameter).OD:21mm~416mmWall thickness:0.8mm~20mmTechnique:Cold drawingStandard:ASME SA192/SA179, GB/T8162, GB/T8163, GB/T3639, DIN2391-2Steel material:20#(AISI 1020/DIN1.0402 C22), 45#(ASTM 1045,DIN45), 20Cr, Q345B, etcWe are professional manufacturer of cold drawn seamless steel pipe in China. Our seamless steel pipe with very high precision of sizeUsage: widely used for mechanical processing, Automobile industry, hydraulic equipmentsAdvantages of our high precision seamless steel pipe:1. Smaller caliber2. Accept small qty order3. Good surface treatment4. The pipe with superior performance, suitable for mechanical makingAccurate sizeAnti-corrosion PackingFinal Supply ConditionsDesignationSymbolDescriptionCold finished (hard)BKTubes do not undergo heat treatment following the final cold forming and,thus, have a rather high resistance to deformationCold finished (soft)BKWThe final heat treatment is followed by cold drawing involving limited deformation.Appropriate further processing allows a certain degree of cold forming(e.g. bending expanding).Cold finished and stress-rellevedBKSHeat treatment is applled following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degreeAnnealedGBKThe last cold forming process is followed by annealing in a controlled atmosphereNormalizedNBKThe last cold forming process is followed by annealing above the upper transformation point in a controlled atmospherePreicision Seamless Tube Size ListOD (mm)Thickness (mm)OD (mm)Thickness (mm)OD (mm)Thickness (mm)OD (mm)Thickness (mm)Φ13.11.5-3Φ35.51.5-7Φ46.11.5-10Φ931.5-15Φ19.251.5-5Φ35.91.5-7Φ47.81.5-10Φ19-Φ1211.5-15Φ221.5-5Φ36.61.5-7Φ49.21.5-10Φ22.21.5-5Φ381.5-8Φ49.51.5-10Φ251.5-6Φ38.41.5-8Φ52.31.5-10Φ26.31.5-6Φ401.5-10Φ53.81.5-10Φ271.5-6Φ40.21.5-10Φ571.5-10Φ281.5-6Φ40.91.5-10Φ591.5-10Φ301.5-6Φ41.31.5-10Φ601.5-11Φ30.251.5-6Φ41.61.5-10Φ62.51.5-11Φ30.91.5-6Φ421.5-10Φ741.5-11Φ311.5-7Φ431.5-10Φ751.5-11Φ321.5-7Φ44.51.5-10Φ761.5-11Φ351.5-7Φ45.81.5-10Φ891.5-15Chemical Composition of seamless steel pipeMaterialChemical composition (%)CMnPSSiNiCu20#AISI 10200.17~0.230.35~0.65≤0.035≤0.0350.17~0.37≤0.3≤0.2545#ASTM1045, DIN450.42~0.50.5~0.8≤0.04≤0.0450.17~0.37≤0.25≤0.25Mechanical Properties of seamless steel pipeSteel materialTensile Strength MpaYield strength MpaElongation%HardnessStraightness20#≥510≥245≥25≤156HB0.3~1.045#≥647≥355≥16≤HRC620.3~1.0