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 : 10 Pieces
Shape : Round
Pressure : As per Requirements PSI
Grade : As Per BS 10 Table E
Standard : DIN
Price 1000.0 INR / Piece
Minimum Order Quantity : 1 Piece
Shape : round
Pressure : 150/300/400/600/900/1500/2500 PSI
Grade : Kynar 740 / Solef 1010
Standard : ANSI
Price 120.0 INR / Number
Minimum Order Quantity : 100
Shape : Round
Pressure : Various PSI
Grade : A105
Standard : ANSI
Price 400.0 INR / Piece
Minimum Order Quantity : 1 Piece
Shape : Round
Pressure : 150/300/400/600/900/1500/2500 PSI
Grade : Industrial
Standard : ANSI