Product Name: Blind Flange with NPT Holes for Testing, Testing Flange
Type: Blind Flange
Standard: ASME B16.5
Material: ASTM A105
Size: 18 Inch, DN450, 450 mm
Pressure: Class 300 LB, PN50
Face: Raised Face (RF)


Source: https://www.landee.cn/asme-b16-5-blind-flange-a105-18-in-cl300-with-test-holes.html