... ", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 3-1/2", 4"materianl: China, GB/T 700: Q195; USA, Gr.B(σs185 ... .542.86101.60 1-1/4"305038.44.1651.65 1-1/2"305044.24.8151.65 2"305055.86.3251.83 2-1/2"305073 ... .039.811.83 3"305088.9311 ... .9812.11 3-1/2"3050101.615.7912 ...