Norris Type T sucker rod coupling blanks,
of cold drawn seamless mechanical steel tubing, are
formed to size with a material hardness of 56 to 62
HRA and magnetically inspected. Blanks are machined
to coupling size and tolerance, threaded by cold forming,
rolled thread tapped for thread strength and fatigue
resistance, and black oxide coated for anti-galling
and lubricating properties. Dimensions and tolerances
conform to API Spec11B. Type T couplings are recommended
for installations where abrasion or corrosion/abrasion
are not a problem.
Norris Sprayloy® sucker rod couplings are manufactured
from AISI Class A-8630 alloy special quality, cold drawn
tubing. Sprayloy couplings are manufactured in their
own dedicated line. Blanks are cleaned, prepared, loaded
on mandrels, shot blasted, flame sprayed and induction
fused. The complete flame spray process is a computer
controlled, menu driven operation that holds spray application
tolerances to within two thousandths of an inch. Sprayloy®
couplings are manufactured with a .010"/.015"
(.254 mm/.381 mm) thick nickel-chromium coating on the
O.D., and are recommended for abrasion and corrosion
resistance.
Couplings are available in a variety of styles in most
sucker rod sizes and combinations of sizes. Couplings
are available in API full-size and slimhole. Oversize
are available on request.
Polished rod couplings are available in box and box
styles in all sucker rod sizes and combinations of sizes,
and in full-size and slimhole outside diameters. Polished
rod couplings are to be used with current API polished
rods with the nine-degree cone pin.
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