Threaded or coupled
Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel: > Casing and tubing of a kind used in drilling for oil or gas: > Welded of stainless steel: > Casing: > Threaded or coupled
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Products classified under HTS 7306.21.30.00
4-1/2 Inch 12.6# J55 SS Liner Casing
Slotted 4-1/2 inch welded stainless steel liner casing, J55 grade, 12.6 lb/ft with threaded hanger/coupling system for extended reach drilling. Used as liner to save casing. HTS 7306.21.30.00 for its welded stainless threaded construction in oil/gas applications.
API 5CT L80 Welded Stainless Steel Casing Pipe
This welded stainless steel casing pipe meets API 5CT L80 specifications for oil and gas drilling operations, featuring threaded ends for secure coupling. It is designed to line the borehole and protect the well from collapse during drilling and production. Classified under HTS 7306.21.30.00 as welded stainless steel casing that is threaded or coupled, specifically for oil/gas drilling.
13-3/8 Inch 72# P110 Stainless Steel Casing
Heavy-duty 13-3/8 inch OD, 72 lb/ft welded stainless steel casing with premium P110 grade and threaded couplings for deep oil well applications. Used to stabilize boreholes in high-pressure environments. Fits HTS 7306.21.30.00 as threaded/coupled welded stainless steel casing for oil/gas drilling.
9-5/8 Inch 43.5# L80 Type 316 SS Casing
Welded Type 316 stainless steel casing pipe, 9-5/8 inch diameter, 43.5 lb/ft, L80 grade with integral threaded joints for corrosion-resistant oilfield use. Essential for intermediate casing strings in sour gas wells. HTS 7306.21.30.00 applies to its welded stainless construction and threaded/coupled design for drilling.
7 Inch 32# N80 Q125 SS Production Casing
7-inch OD, 32 lb/ft N80 grade quenched and tempered welded stainless steel casing with premium threaded connections for production zones in oil wells. Provides structural support and isolation during extraction. Classified in 7306.21.30.00 for threaded/coupled stainless steel welded casing used in drilling.
20 Inch Conductor Casing 94# SS Welded
Large diameter 20-inch welded stainless steel conductor casing, 94 lb/ft with heavy-duty threaded couplings to initiate offshore oil well drilling through surface formations. Stabilizes the upper well section. Meets HTS 7306.21.30.00 criteria as welded stainless steel threaded/coupled casing for oil/gas.