Prepare for the NCCER Pipefitter Certification. Study with comprehensive quizzes and detailed multiple-choice questions, each with explanations. Ace your exam!

Multiple Choice

The flange depicted in the figure is a?

Two-piece flange assemblies identify the lap joint. In this design, a stub end is welded to the pipe, and a separate companion flange with bolt holes bolts to that stub end. This arrangement allows the flange to align with the piping after welding and lets you rotate or reposition the flange relative to the pipe for easy assembly, which is the hallmark of a lap joint flange. This differs from a socket-weld flange, where the pipe inserts into a socket in the flange and is welded from the inside; a blind flange is a solid disk used to seal an opening; and a threaded flange relies on threaded connections rather than a two-piece mating arrangement.

Two-piece flange assemblies identify the lap joint. In this design, a stub end is welded to the pipe, and a separate companion flange with bolt holes bolts to that stub end. This arrangement allows the flange to align with the piping after welding and lets you rotate or reposition the flange relative to the pipe for easy assembly, which is the hallmark of a lap joint flange.

This differs from a socket-weld flange, where the pipe inserts into a socket in the flange and is welded from the inside; a blind flange is a solid disk used to seal an opening; and a threaded flange relies on threaded connections rather than a two-piece mating arrangement.