... Material grade: J55, K55, N80, L80, T95, 8 5/8"oil casingCasing and Tubing Standard: API 5CT,Carbon Steel8 ... St37.0,St44.0,St52.0DIN17175 Gr. St35.8,St45.8,17Mn4,19Mn5,15Mo3,13CrMo44,10CrMo910JIS G3444 Gr. STK290, ... economizer,reheater,superheater and steam pipeline of boilers.Seamless pipe StandardTrademarkChemical componentsMechanical propertyCSiMnP,SCuNiMoCrVTensile Strength(Mpa)Yield Strength(Mpa ...