PIPEFITTER NCCER CERTIFICATION EXAM
QUESTIONS & VERIFIED CORRECT
ANSWERS | LATEST 2026/2027 NCCER
PIPEFITTING TEST PREP | COMPREHENSIVE
STUDY GUIDE | REAL EXAM PRACTICE
QUESTIONS | GRADED A+ SUCCESS
RESOURCE
• This study guide contains 300 practice questions mirroring the real NCCER
Pipefitter Certification Exam format, designed to build your confidence and sharpen
your test-taking skills.
• Each question includes five answer options (A–E), a clearly marked correct answer,
and a EXPERT RATIONALE — use it by attempting each question first, then
checking your answer and reading the EXPERT RATIONALE to reinforce
understanding.
PIPEFITTER NCCER CERTIFICATION EXAM 300 PRACTICE QUESTIONS | 2026/2027
EDITION
SECTION 1: PIPEFITTING TOOLS AND EQUIPMENT
1. What is the primary purpose of a pipe reamer?
A. To cut threads on the outside of a pipe
B. To measure the internal diameter of a pipe
C. To remove burrs from the inside of a cut pipe
D. To bend pipe without crimping
E. To join two pipe sections together
Correct Answer: C. To remove burrs from the inside of a cut pipe
,EXPERT RATIONALE: After cutting a pipe, sharp burrs remain on the inside edge. A
reamer is used to smooth these burrs, ensuring proper flow and preventing
damage to fittings or seals.
2. Which tool is used to cut large-diameter pipe in the field?
A. Hacksaw
B. Pipe cutter wheel
C. Reciprocating saw with bi-metal blade
D. Chain pipe cutter
E. Angle grinder with cutting disc
Correct Answer: D. Chain pipe cutter
EXPERT RATIONALE: A chain pipe cutter is specifically designed for large-diameter
pipe cutting in the field. It wraps around the pipe and uses cutting wheels to score
and cut through the pipe evenly.
3. What is the function of a come-along in pipefitting?
A. To measure pipe alignment
B. To thread pipe ends
C. To mechanically pull or tension pipe sections into alignment
D. To support pipe from overhead structures
E. To cut pipe at precise angles
Correct Answer: C. To mechanically pull or tension pipe sections into
alignment
EXPERT RATIONALE: A come-along is a manual ratchet lever hoist used to pull
heavy pipe sections together or into alignment, especially when working with large
or stubborn pipe runs.
,4. Which of the following is used to check if a pipe is level?
A. Plumb bob
B. Spirit level
C. Transit level
D. Pipe laser
E. All of the above
Correct Answer: E. All of the above
EXPERT RATIONALE: All listed tools can be used to check level or plumb depending
on the situation. Spirit levels are most common on short runs, while pipe lasers and
transit levels are used for longer or more precise alignments.
5. What does a pipe vise do?
A. Cuts pipe at a fixed angle
B. Holds pipe securely during cutting, threading, or reaming
C. Measures pipe outside diameter
D. Supports pipe in a trench
E. Tests for pipe leaks
Correct Answer: B. Holds pipe securely during cutting, threading, or
reaming
EXPERT RATIONALE: A pipe vise grips pipe firmly to prevent movement during
operations such as cutting, threading, or reaming, ensuring accuracy and safety.
6. Which wrench is most appropriate for tightening large-diameter pipe
fittings?
, A. Adjustable wrench
B. Strap wrench
C. Pipe wrench
D. Box-end wrench
E. Socket wrench
Correct Answer: C. Pipe wrench
EXPERT RATIONALE: A pipe wrench is specifically designed to grip and turn pipe
and pipe fittings. Its serrated jaws tighten as torque is applied, making it ideal for
threaded pipe work.
7. What is the purpose of a strap wrench compared to a pipe wrench?
A. It provides more torque on rusted fittings
B. It grips pipe without marring or scratching the surface
C. It is used only on square fittings
D. It is designed for use in confined spaces only
E. It cuts pipe while gripping
Correct Answer: B. It grips pipe without marring or scratching the surface
EXPERT RATIONALE: A strap wrench uses a fabric or rubber strap to grip pipe,
making it ideal for polished, chrome, or plastic pipe where jaw marks would be
unacceptable.
8. Which measuring tool is used to determine the outside diameter of a pipe?
A. Inside calipers
B. Outside calipers or OD tape
C. Depth gauge
QUESTIONS & VERIFIED CORRECT
ANSWERS | LATEST 2026/2027 NCCER
PIPEFITTING TEST PREP | COMPREHENSIVE
STUDY GUIDE | REAL EXAM PRACTICE
QUESTIONS | GRADED A+ SUCCESS
RESOURCE
• This study guide contains 300 practice questions mirroring the real NCCER
Pipefitter Certification Exam format, designed to build your confidence and sharpen
your test-taking skills.
• Each question includes five answer options (A–E), a clearly marked correct answer,
and a EXPERT RATIONALE — use it by attempting each question first, then
checking your answer and reading the EXPERT RATIONALE to reinforce
understanding.
PIPEFITTER NCCER CERTIFICATION EXAM 300 PRACTICE QUESTIONS | 2026/2027
EDITION
SECTION 1: PIPEFITTING TOOLS AND EQUIPMENT
1. What is the primary purpose of a pipe reamer?
A. To cut threads on the outside of a pipe
B. To measure the internal diameter of a pipe
C. To remove burrs from the inside of a cut pipe
D. To bend pipe without crimping
E. To join two pipe sections together
Correct Answer: C. To remove burrs from the inside of a cut pipe
,EXPERT RATIONALE: After cutting a pipe, sharp burrs remain on the inside edge. A
reamer is used to smooth these burrs, ensuring proper flow and preventing
damage to fittings or seals.
2. Which tool is used to cut large-diameter pipe in the field?
A. Hacksaw
B. Pipe cutter wheel
C. Reciprocating saw with bi-metal blade
D. Chain pipe cutter
E. Angle grinder with cutting disc
Correct Answer: D. Chain pipe cutter
EXPERT RATIONALE: A chain pipe cutter is specifically designed for large-diameter
pipe cutting in the field. It wraps around the pipe and uses cutting wheels to score
and cut through the pipe evenly.
3. What is the function of a come-along in pipefitting?
A. To measure pipe alignment
B. To thread pipe ends
C. To mechanically pull or tension pipe sections into alignment
D. To support pipe from overhead structures
E. To cut pipe at precise angles
Correct Answer: C. To mechanically pull or tension pipe sections into
alignment
EXPERT RATIONALE: A come-along is a manual ratchet lever hoist used to pull
heavy pipe sections together or into alignment, especially when working with large
or stubborn pipe runs.
,4. Which of the following is used to check if a pipe is level?
A. Plumb bob
B. Spirit level
C. Transit level
D. Pipe laser
E. All of the above
Correct Answer: E. All of the above
EXPERT RATIONALE: All listed tools can be used to check level or plumb depending
on the situation. Spirit levels are most common on short runs, while pipe lasers and
transit levels are used for longer or more precise alignments.
5. What does a pipe vise do?
A. Cuts pipe at a fixed angle
B. Holds pipe securely during cutting, threading, or reaming
C. Measures pipe outside diameter
D. Supports pipe in a trench
E. Tests for pipe leaks
Correct Answer: B. Holds pipe securely during cutting, threading, or
reaming
EXPERT RATIONALE: A pipe vise grips pipe firmly to prevent movement during
operations such as cutting, threading, or reaming, ensuring accuracy and safety.
6. Which wrench is most appropriate for tightening large-diameter pipe
fittings?
, A. Adjustable wrench
B. Strap wrench
C. Pipe wrench
D. Box-end wrench
E. Socket wrench
Correct Answer: C. Pipe wrench
EXPERT RATIONALE: A pipe wrench is specifically designed to grip and turn pipe
and pipe fittings. Its serrated jaws tighten as torque is applied, making it ideal for
threaded pipe work.
7. What is the purpose of a strap wrench compared to a pipe wrench?
A. It provides more torque on rusted fittings
B. It grips pipe without marring or scratching the surface
C. It is used only on square fittings
D. It is designed for use in confined spaces only
E. It cuts pipe while gripping
Correct Answer: B. It grips pipe without marring or scratching the surface
EXPERT RATIONALE: A strap wrench uses a fabric or rubber strap to grip pipe,
making it ideal for polished, chrome, or plastic pipe where jaw marks would be
unacceptable.
8. Which measuring tool is used to determine the outside diameter of a pipe?
A. Inside calipers
B. Outside calipers or OD tape
C. Depth gauge
