... .4541 ,ST33,ST37,ST37.2,ST35.8,ST35.4,ST42,ST42.2,ST45.8,ST45.4,ST52.4,ST52,TT ST35N,etc4)O.D.&Wall ... ..: SCH 5~ SCH XXSLSAW: DN200~DN1400 (8"~56"),, W.T.: 8mm ~ 60mmSSAW: DN200~DN2500 (8"~100"),W.T.: 6mm ~ 25 mm5)Length ... G3452,G3454,;DIN1629,DIN17175,DIN2448 Seamless,welded ST37.2/ST52.4/ST35.8 carbon black Steel Pipe