ANSI B16.5 Slip-on Flange Supplier: Forged ASTM A105 Slip-on Flanges, Raised Face, Black Coated, 150LB (PN20), 24 Inch (DN600), ANSI B16.5. Type: Slip-on Flange. Material: Forged Steel, ASTM A105. Face: Raised Face. Size: 24 Inch (DN600). Class: 150LB (PN20). Standard: ANSI B16.5. Surface: Black Painting.