A pipe stub end is a type of pipe fitting used in conjunction with lap joint flanges, designed to facilitate easy bolt alignment and frequent dismantling of piping systems. Typically featuring a short piece of pipe with a flared end, the stub end provides a smooth sealing surface for the flange while minimizing the amount of expensive material required in corrosive or high-pressure environments. These fittings are commonly manufactured from exotic alloys—specialty metals such as Inconel, Hastelloy, Monel, and titanium—known for their exceptional resistance to heat, corrosion, and mechanical stress, making them ideal for demanding chemical, petrochemical, and offshore applications.
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