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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