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...
Lap joint flanges are similar to other type of flanges, but it does not have a raised face. Lap joint flanges are used in conjunction with a "lap joint stub end". The total initial cost of a lap joint flange along with a stub end is around one third...
Socket weld flange is similar to the slip-on flange in outline, but the bore is counter bored to accept pipe. Socket welding flanges are typically used on smaller sizes of high pressure pipes. Socket weld flanges are widely used in high pressure...
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