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Seamless Precision Carbon Steel Tube DIN 2391 / EN10305-4 ST37.4 / E235 NBK For Automobile
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Seamless Precision Carbon Steel Tube DIN 2391 / EN10305-4 ST37.4 / E235 NBK For Automobile

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Seamless Precision Carbon Steel Tube DIN 2391 / EN10305-4 ST37.4 / E235 NBK For Automobile

 

 

Outside diameter ranges from 4 to 60 mm and wall thickness ranges from 0.5 to 7mm. 

Outside diameter ranges from 4 to 60 mm and wall thickness ranges from 0.5 to 7mm. 

 

NAME

SCOPE(mm)

GB (mm)

DIN (mm)

Enterprise control(mm)

Special high-precision(mm)

OD  Out Diameter

4-30

±0.1

±0.08

±0.05

±0.03

31-40

±0.15

±0.15

±0.05

±0.03

41-50

±0.20

±0.20

±0.08

±0.03

51-60

±0.25

±0.25

±0.08

±0.03

Wall thickness 

0.5-7

±10%,Min±0.12

±10%

±10%,Min±0.05

±10%,Min±0.03
Steel Grades Standard:DIN2391/EN10305-4;Material:ST37.4,E235
Chemical Component C:≤0.17Mn≥0.4Si≤0.35P:≤0.025S:≤0.025
Length 3-10m, tolerance +10 mm
Marking  According to standards or upon agreement by the InkJet system either in one spot or along the whole length of a tube. Bundle marking is done either by one or multiple labels with required data.
Surface protection 

 Anticorrosion application. Internal surface and external surface are flushed with antirust oil.
Testing chemical analysis, tensile test, dimensional inspection and visual inspection,
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RRT Pipe Making Co.,Ltd.
Hengtai Road Industry Area, Daqiuzhuang Town, Jinghai, Tianjin, China (Mainland)
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