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st 52
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DIN 1629 ST 52 Seamles Steel Pipe
DIN 1629 is a German industrial standard, officially titled 'Technical delivery conditions for non-alloy seamless circular steel pipes with special quality requirements.' The main steel grades are St37.0, St44.0, and St52.0. It is mainly used for seamless steel pipes in the fields of chemical engineering, mechanical engineering, and pressure vessels.
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