Slip on pipe flanges actually slip over the pipe.
These pipe flanges are typically machined with an inside diameter slightly larger than the outside diameter of the pipe.

Price:
Price 1000.0 INR / Piece
Minimum Order Quantity : 1 Piece
Shape : round
Surface : Other
Grade : Kynar 740 / Solef 1010
Material : PVDF
Price 450.0 INR / Piece
Minimum Order Quantity : 1 Piece
Shape : Round
Surface : Painted, Galvanized, Black
Grade : Multple Grades Available
Material : Stainless Steel
Price 100.0 INR / Piece
Minimum Order Quantity : 1 Piece
Shape : Round
Surface : Painted, Galvanized, Other, Black
Grade : A105
Material : Mild Steel
Minimum Order Quantity : 10 Pieces
Shape : Round
Surface : Galvanized
Grade : Industrial
Material : MS