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 400.0 INR / Piece
Minimum Order Quantity : 1 Number
Surface : Painted, Galvanized, Other, Black
Material : Mild Steel/Stainless Steel
Technics : ERW
Grade : Industrial
Price 120.0 INR / Piece
Minimum Order Quantity : 1 Number
Surface : Painted, Galvanized, Other, Black
Material : Mild Steel
Technics : ERW
Grade : 2062
Price 120.0 INR / Unit
Minimum Order Quantity : 1 Number
Surface : Other, Smooth Machined
Material : Stainless Steel
Technics : Other, Forged
Grade : ASTM A182 F304/F316
Minimum Order Quantity : 1 Number
Surface : Other, Machined
Material : Stainless Steel
Technics : Other, Forged
Grade : Industrial Grade