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Product Name: Blind flanges
Material:
Carbon Steel Flange: 20#, Q235, A105, 
Stainless Steel Flange: F304 F304L 
Surface Treatment: Anti-rust Oil
Transparent/ Yellow/Black Anti-rust Paint
Zinc, Hot dipped Galvanized
Size: 15A- 2000A, 1/2"-78" 
Class: Class400
Class600
Class900
Class1500
Class2500