Product Name: ASTM A105 Blind Flanges
Size: 20 Inch, DN500
Pressure: Class 300 LB, PN50
Standard: ASME B16.5
Material: ASTM A105
Surface Treatment: Black Painting
Sealing Face: Raised Face
Source: https://www.landeeflange.com/astm-a105-blind-flange-asme-b16-5-20-in-cl300-dn500-pn50.html
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