Qingdao Ironsteel International Trading Co., Ltd.  

Product Name: Precise Cold Drawn Seamless Steel Pipe DIN2391, ASTM A179 Standard Model NO.: IR-C Section Shape: Round Usage: Pipeline Transport, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose Surface Treatment: Polished Material: Carbon Steel, Alloy Steel, Stainless Steel Technique: Cold Drawn Type: Seamless Outer Diameter: 18mm~416mm Wall Thickness: 0.8mm~20mm 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 Toleraance 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 arather high resistance to deformationCold finished (soft)BKWThe final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows acertain 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 acertain degreeAnnealedGBKThe last cold forming process is followed by annealing in acontrolled atmosphereNormalizedNBKThe last cold forming process is followed by annealing above the upper transformation point in acontrolled 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-Φ1211.5-15Φ221.5-5Φ36.61.5-7Φ49.21.5-10 Φ22.21.5-5Φ381.5-8Φ49.51.5-10 Φ251.5-6Φ38.41.5-8Φ52.31.5-10 Φ26.31.5-6Φ401.5-10Φ53.81.5-10 Φ271.5-6Φ40.21.5-10Φ571.5-10 Φ281.5-6Φ40.91.5-10Φ591.5-10 Φ301.5-6Φ41.31.5-10Φ601.5-11 Φ30.251.5-6Φ41.61.5-10Φ62.51.5-11 Φ30.91.5-6Φ421.5-10Φ741.5-11 Φ311.5-7Φ431.5-10Φ751.5-11 Φ321.5-7Φ44.51.5-10Φ761.5-11 Φ351.5-7Φ45.81.5-10Φ891.5-15 Chemical 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.