Iron Gas Fitting Flashcards
What is a ferrous pipe
Any pipe that contains iron ore
What does IPS and NPS stand for
Iron pipe size
nominal pipe size inside diameter of pipe
Does xxs have a corresponding schedule numer
No
Pressure rating for standard grade threaded pipe where is it used
Sustain pressures of up to 150 mostly residential.
14” pipe and above is sized how.
Sized by the exact outside diameter
What are the organizerations
API
ASTM
ASME
AAWA
CSA
American petroleum institute
American society for testing and material
American society of mechanical engineers
American Ester works association
Canadian standard association
The thread used on most pipe threading
ASPT (American standard pipe thread or NPT (national pipe thread)
What is the centerline and included angle
CL is 30°
Included is 60°
Number of threads per in for ½ and ¾
Approx number of threads to cut to obtain standard
14 threads per in
10½ for standard
What does a nipple chuck do
A tool for holding short, close or custom threaded pipe without crushing the thread
Function of cutting oil
Lubricate the high-pressure area between cutting tools and sheared chip
Lubricate the areas of contact between cutting tools and work pieces
Carry away some heat
Way to measure pipe
Face to face
How much do you add to a face to face measurement ⁹/¹⁶ on each end or 1 ⅛ total
Fabrication process
Measure
Mark
Cut pipe
Ream
Thread and oil
Clean and thread
The joint compound act as a what?
Lubricant
How do you identify the sizes of a tee
Smallest to largest, with the last being the branch.
1¼×½×1¼
How do you identify the sizes of a tee
Smallest to largest, with the last being the branch.
1¼×½×1¼
