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Seamless Steel Tube DIN1629

Standard for Seamless circular unalloyed steel tubes subject to special requirements.

Application:
These tubes are predominantly used in the construction of chemical plant,vessels,pipework and for general mechanical engineering purposes.

Details

Size:
O.D.: 6.0-813.0mm W.T.: 1.0-110.0mm Length: Max.12000mm

Steel Grade and Chemical Composition(%)

Standard Grade C Si Mn P S Cr
DIN1629 St37/St37.5 ≤0.17 / / ≤0.04 ≤0.04 /
St52/St52.3 ≤0.22 ≤0.55 0.17 ≤0.04 ≤0.04 /
St44 ≤0.21 / / ≤0.04 ≤0.04 /

Mechanical Properties
Standard Grade Tensile Strength(Mpa) Yield Point(Mpa) Elongation(A%)
DIN1629 St37/St37.5 350-480 ≥235 ≥25
St52/St52.3 500-560 ≥355 ≥21
St44 420-550 ≥275 ≥21
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