Slip-on flange usually slips over the pipe. Slip-on flange are typically made with an inside diameter of flange slightly larger than the outside diameter of the pipe. This allows the slip on flange to slip over the pipe. Slip-on flanges are welded to provide strength and prevent leakage. Slip-on flange can sometime also have a boss /ring or hub and can be made with a bore to suit either pipe or tube. Ring pipe flanges and hub pipe flanges are both considered slip-on flanges as they both slip over pipe. Slip-on flanges are generally preferred by users over weld neck flanges, as they are cheaper option than weld neck flange and the fact that less accuracy is required when cutting pipe to length. Slip-on flanges are widely being used in shipbuilding, power generation, petrochemical plant, water treatment, dairy plant, pharmaceutical plant etc.
Standards: ASME B.16.5, ASME B.16.47 (A/B Series), B16.48-API590, API 605, AWWA C207, BS 10, DIN 2633, MSS-SP-44.

Slip-on flange usually slips over the pipe. Slip-on flange are typically made with an inside diameter of flange slightly larger than the outside diameter of the pipe. This allows the slip on flange to slip over the pipe. Slip-on flanges are welded to provide strength and prevent leakage. Slip-on flange can sometime also have a boss /ring or hub and can be made with a bore to suit either pipe or tube. Ring pipe flanges and hub pipe flanges are both considered slip-on flanges as they both slip over pipe. Slip-on flanges are generally preferred by users over weld neck flanges, as they are cheaper option than weld neck flange and the fact that less accuracy is required when cutting pipe to length. Slip-on flanges are widely being used in shipbuilding, power generation, petrochemical plant, water treatment, dairy plant, pharmaceutical plant etc.
Standards: ASME B.16.5, ASME B.16.47 (A/B Series), B16.48-API590, API 605, AWWA C207, BS 10, DIN 2633, MSS-SP-44.