Seamless Carbon Steel Tubing, 1.25 Inch OD, 0.10 Inch Thick, 1.06 Inch ID

Built to SAE J524, it is seamless low carbon steel tubing that is annealed for bending and flaring, with a listed tensile strength of 55,000 psi.

At 1,393 psi maximum working pressure, you've got a little headroom over your 1,200 psi system. That rating already accounts for a 6:1 safety factor, which is applied for applications where hydraulic shock and mechanical strain are considered considerable. If your system runs smooth with minimal shock, some operators carefully apply a 4:1 safety factor, which allows for higher working pressures. On the flip side, if you're dealing with severe shock conditions, the recommended 8:1 factor would bring that working pressure number down. For a steady 1,200 psi system without heavy shock, this tubing fits comfortably within its rated range.