DIN 1629 Seamless Steel pipe Of Non Alloys Steels are made of unalloyed steels, it’s main grades are St 37.0, St44.0, St52.0, Din 1629 seamless steel pipes application fields are: chemical plant, vessels, pipework construction and for common mechanical engineering purposes. Normally DIN 1629 standard are manufactured with no limiting working pressure values. Working temperature is limited below 300℃. Chemical composition: Steel Grade Type of deoxidization (R, killed (including semi-killed)) (RR,fully killed) Chemical Composition, % by mass Symbol Material Number C P S N¹) Addition of nitrogen fixing elements (e.g.not less than 0,020% Al total St37.0 1.0254 R 0.17 0.040 […]