• Model NO.：IR-C steel pipe
• Tolerance of Size：+,-0.05mm
• Outer Diameter：18mm~416mm
• Wall Thickness：0.8mm~20mm
• Length：6meters, 9meters, 12meters, Random Length
• Surface：Annealed, Straightening, Pickling
• End Processing：Plain Ends
• Transport Package：Bundled, Wrapped, Wooden Cased.
• Specification：ASTM, DIN, GB,T8162
• Trademark：Iron&steel
• Origin：China
• HS Code：73041990
• Production Capacity：100 Tons Per Month

DesignationSymbolDescriptionCold 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 atmosphere

Preicision Seamless Tube Size List
 
OD (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 CompositionMaterialChemical 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 PropertiesSteel materialTensile Strength MpaYield strength MpaElongation
%HardnessStraightness20#≥510≥245≥25≤156HB0.3~1.045#≥647≥355≥16≤HRC620.3~1.0