GMAW, FCAW and MCAW on Mild Steel
Pipe Welder 1st Year Exam Questions And
Answers
What are the three (3) important dimensions for pipe? - - -
correct answer ✅- outside diameter (OD)
- inside diameter (ID)
- wall thickness (schedule)
What is OD approximately equal to? - - -
correct answer ✅ID for pipe sizes up to 12"
What is nominal size? - - -
correct answer ✅the approximate ID of standard wall pipe
What are pipe schedules? - - -
correct answer ✅an indication of wall thickness
What does the term schedule refer to as it relates to pipe? - - -
correct answer ✅the pipe wall thickness
Why aren't the terms tubing and pipe interchangeable? - - -
correct answer ✅Tubing is generally sized to the outside diameter
and the wall thickness is lighter in weight.
, GMAW, FCAW and MCAW on Mild Steel
Pipe Welder 1st Year Exam Questions And
Answers
What size of pipe is identified by OD? - - -
correct answer ✅pipe 350 mm (14") and larger
Explain the 1G position and weld on pipe. - - -
correct answer ✅a groove weld completed in the flat position
from above the joint while rotating the pipe with its axis horizontal
Single Vee preparations on pipe generally have an included angle
within the range of: - - -
correct answer ✅60° - 75°
What root gap is recommended for a GMAW roll welded pipe joint
prior to tack welding? - - -
correct answer ✅3.2 mm - 4 mm (1/8" - 5/32")
Where should the four tack welds be located on a 150 mm (6") pipe
to be welded in the 5G position? - - -
correct answer ✅at the 12, 3, 6 and 9 o'clock positions.
Pipe Welder 1st Year Exam Questions And
Answers
What are the three (3) important dimensions for pipe? - - -
correct answer ✅- outside diameter (OD)
- inside diameter (ID)
- wall thickness (schedule)
What is OD approximately equal to? - - -
correct answer ✅ID for pipe sizes up to 12"
What is nominal size? - - -
correct answer ✅the approximate ID of standard wall pipe
What are pipe schedules? - - -
correct answer ✅an indication of wall thickness
What does the term schedule refer to as it relates to pipe? - - -
correct answer ✅the pipe wall thickness
Why aren't the terms tubing and pipe interchangeable? - - -
correct answer ✅Tubing is generally sized to the outside diameter
and the wall thickness is lighter in weight.
, GMAW, FCAW and MCAW on Mild Steel
Pipe Welder 1st Year Exam Questions And
Answers
What size of pipe is identified by OD? - - -
correct answer ✅pipe 350 mm (14") and larger
Explain the 1G position and weld on pipe. - - -
correct answer ✅a groove weld completed in the flat position
from above the joint while rotating the pipe with its axis horizontal
Single Vee preparations on pipe generally have an included angle
within the range of: - - -
correct answer ✅60° - 75°
What root gap is recommended for a GMAW roll welded pipe joint
prior to tack welding? - - -
correct answer ✅3.2 mm - 4 mm (1/8" - 5/32")
Where should the four tack welds be located on a 150 mm (6") pipe
to be welded in the 5G position? - - -
correct answer ✅at the 12, 3, 6 and 9 o'clock positions.
