20 Inch Conductor Casing J55
Large-diameter 20-inch seamless J55 nonalloy steel conductor casing for initial wellbore support in offshore drilling. Stabilizes surface formations. Classified 7304.29.20 as other casing.
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If longitudinally submerged arc welded
Common large-diameter casings are welded under 7305, not seamless.
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Related Products under HTS 7304.29.20
6-5/8 Inch Production Tubing Casing
Dual-use 6-5/8 inch J55 seamless casing/tubing for production. Classified as casing.
12-1/4 Inch Scab Liner Casing
Repair scab liner 12-1/4 inch N80 seamless for damaged wells. Nonalloy steel.
14 Inch Intermediate Liner J55
14 inch J55 seamless intermediate liner for zonal isolation.
23-3/8 Inch Surface Conductor Casing
Extra-large 23-3/8 inch K55 conductor for surface support. Seamless nonalloy.
10-3/4 Inch Intermediate Casing P110
High-strength P110 seamless nonalloy casing for intermediate sections, 10-3/4 inch. For deep high-pressure wells. 7304.29.20 classification.
5-1/2 Inch Liner Casing J55
Seamless J55 liner hanger casing, 5-1/2 inch for well completion. Hangs inside previous casing. Other under 7304.29.20.