API 5CT Grade J55 Oil Well Casing
Seamless steel casing pipe made from nonalloy J55 grade steel, with outside diameter of 339.7 mm (13-3/8 inches) and wall thickness of 10.92 mm, used to line oil and gas wells during drilling. It falls under HTS 7304.29.2050 as seamless casing of iron or nonalloy steel with OD exceeding 285.8 mm but not exceeding 406.4 mm and wall thickness less than 12.7 mm.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If alloy steel construction
Alloy steel casing (e.g., grades L80 or P110) shifts to subheading 7304.29.31 due to higher alloy content exceeding nonalloy thresholds.
If welded rather than seamless
Welded casing of iron or nonalloy steel falls under 7304.39, as seamlessness is a key distinguisher in Chapter 73 headings.
If used for water/gas transport instead of drilling
Repurposed for conveyance of liquids changes classification from drilling-specific 7304 to general steel tubes in 7306.
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Import Tips & Compliance
• Verify API 5CT certification and mill test reports for customs compliance; ensure accurate OD/wall thickness documentation to avoid misclassification; check country-of-origin rules as many suppliers are from China or India
Related Products under HTS 7304.29.20.50
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16 Inch 65# J55 Conductor Casing
Seamless J55 conductor casing for initial hole support, OD 406.4 mm, wall 11.0 mm.
15 Inch 72# J55 Tieback Casing
Seamless J55 tieback casing extension, OD 381 mm, thin wall 11.2 mm, connects surface to subsea wells.
11-3/4 Inch 52# L80 Type 1 Casing
Adjust OD: 11.75in=298.5mm >285.8. Seamless L80 nonalloy, wall 10.5mm, for corrosive environments.
13 Inch 61# N80QB Casing
Seamless N80Q tempered nonalloy casing, OD 330.2 mm, wall 11.4 mm, quench/bow for strength in HP wells.