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Cold Drawn Precision Seamless Steel Pipe for Mechanical Processing
- Jun 13, 2018 -

Product Description

Product Description
Toleraance of size: ±0.05mm(outer diameter).
OD: 6mm~325mm
Wall thickness: 3mm~36mm
Technique: Cold drawing
Standard: ASME SA192/SA179, GB/T8162, GB/T8163, GB/T3639, DIN2391-2
Steel material: 20#(AISI 1020/DIN1.0402 C22), 45#(ASTM 1045,DIN45), 20Cr, Q345B, etc
We are professional Trader of cold drawn seamless steel pipe  in China. Our seamless steel pipe with very high precision of size
Usage: widely used for mechanical processing, Automobile industry, hydraulic equipments
Advantages of our high precision seamless steel pipe:
1.Smaller caliber
2.Accept small qty order
3.Good surface treatment
4.The pipe with superior performance, suitable for mechanical making Accurate size
5.Perfect surface treatment
6.Anti-corrosion Packing

 

DesignationSymbolDescription
Cold finished (hard)BKTubes do not undergo heat treatment following the final cold forming and,thus, have a rather high resistance to deformation
Cold 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 degree
AnnealedGBKThe last cold forming process is followed by annealing in a controlled atmosphere
NormalizedNBKThe 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)
Φ13.11.5-3Φ35.51.5-7Φ46.11.5-10Φ931.5-15
Φ19.251.5-5Φ35.91.5-7Φ47.81.5-10Φ19-Φ1211.5-15
Φ221.5-5Φ36.61.5-7Φ49.21.5-10  
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 pipe

MaterialChemical composition (%)
CMnPSSiNiCu
20#
AISI 1020
0.17~0.230.35~0.65≤0.035≤0.0350.17~0.37≤0.3≤0.25
45#
ASTM1045, DIN45
0.42~0.50.5~0.8≤0.04≤0.0450.17~0.37≤0.25≤0.25


Mechanical Properties of seamless steel pipe

Steel materialTensile Strength MpaYield strength MpaElongation
%
HardnessStraightness
20#≥510≥245≥25≤156HB0.3~1.0
45#≥647≥355≥16≤HRC620.3~1.0