Product Name: ASTM A105 Full Coupling, Reducing Coupling
Design Standard: ASME B16.11
Material: ASTM A105, Forged Carbon Steel
Size: 1 * 1/2 Inch, DN25*DN15
Pressure Rating: Class 3000 LB (PN400)
End Connection: Threaded
Surface Treatment: Galvanized

Source: https://www.landeepipefitting.com/astm-a105-full-couplings-asme-b16-11-1-1-2-inch-cl3000-lb.html