All pump joints are made from modified alloy steel heat-treated to a Brinell Hardness range of 285–341 with a Charpy V-Notch minimum impact strength of 40 ft-lbs at 70°F guaranteed to one inch below the surface. Connections can be cold rolled after machining, if requested. All connections are phos-coated to prevent galling during initial make-up.
Nominal size: 3 1/2''OD ~ 6~ 5/8'' OD, Length: 5', 10', 15', 20'.
pup joint is a pipe of non-standard length used to adjust the length of tubular strings to its exact requirement.
API casing and tubing pup joints are manufactured according to API Spec 5CT using prime API monogrammed