... of Pipe FittingsStandardASTM , ANSI, DIN, GB, JB/TWall ThincknessSCH20-SCH160MaterialQ235,20#,16Mn , ST45.8, 12CrMoV, 15CrMo , 1Cr13,1Cr18Ni9Ti, 0Cr19Ni9,00Cr19Ni11,00Cr17Ni12Mo2 ... , 00Cr17Ni14Mo2ApplicationNatural gas , petroleum, chemical industry , electric power , metallurgy , thermodynamic fields, water supply ...