Product Name: Flanged Insulation Joints
Type: Flanged Insulation Joint (Type F Flange)
Standard: ASME B16.5
Material: ASTM A350 LF2 Class 1
Size: 3 Inch
Pressure: Class 150 LB
Surface Finish: Black Epoxy Painting

Source: https://www.landee.cn/astm-a350-lf2-cl1-insulation-joint-asme-b16-5-3-in-cl150.html