Product Name: ASTM A192 Heat Exchanger Tubes
Type: Seamless Tube (SMLS)
Material: ASTM A192, Carbon Steel
Size: 1 Inch
OD: 25.4 mm
Length: 9144 mm
Wall Thickness: 2.77 mm (Minimum)
Heat Treatment: Annealed


Source: https://www.landeepipe.com/seamless-heat-exchanger-tube-astm-a192-25-4-9144-2-77-mm.html