Sizes (O.D. x W.T): from 13.7mm 219.1mm x 1.5mm to 28mm Stanard: DIN17175 Quality Steel Grade: ST35.8,ST45.8,15Mo3,13CrMo44 Surface: oiled or black painted to prevent rust Marking: as per customers requirement Type: Seamless pipe. Brand: BORUN. ST35.8 Pipe steel intro:. ST35.8 pipeline steel carbon contents is listed below 0.17%. Steel pipe will certainly be melting evaluation, tensile and also influence test. Tensile stamina: 350MPa 480MPa. Yield toughness: 215MPa 235MPa. Effect work of V notch: 34J.