Seamless Carbon Steel Tubing, 1.25 Inch OD, 0.12 Inch Thick, 1.01 Inch ID

At 1,760 psi maximum working pressure, that 1,400 psi system sits comfortably within range. Worth knowing that figure already accounts for a 6:1 safety factor, which is the standard applied for conditions where hydraulic shock and mechanical strain are considered considerable. If your setup runs into more severe shock loads, the rated working pressure would need to be pulled back further to reflect an 8:1 safety factor. For routine fluid transfer or air brake applications without heavy shock, you're in good shape at that operating pressure.

Dimensional-wise, it is 1.25 inch outside diameter with a 0.12 inch wall thickness, which puts the inside diameter at 1.01 inch.