Product Name: ASTM A182 F316L Full Coupling
Type: Full Coupling
Standard: ASME B16.11
Material: ASTM A182 F316L
Size: 1/2 Inch
Pressure Rating: Class 3000 LB
End Connection: NPT Threaded

Source: https://www.landee.cn/astm-a182-f316l-full-coupling-asme-b16-11-1-2-inch-cl3000.html