9-5/8 Inch K55 Casing for Gas Wells
Seamless nonalloy steel K55 grade casing with 355.6 mm OD and 15.9 mm wall thickness, designed for gas well drilling to stabilize boreholes. Fits HTS 7304.29.20.60 as seamless, nonalloy casing for oil/gas, OD 285.8-406.4 mm, wall ≥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 OD exceeds 406.4 mm
Larger diameter casing exceeding 406.4 mm OD shifts to the next size subheading in 7304.29.
If OD 114.3-285.7 mm
Smaller OD casing falls into the prior diameter range subheading while keeping other specs.
If imported as gas well pump tubing
Tubing specifically for gas pumps may classify under Chapter 84 gas turbines/pumps rather than raw casing.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide end-use declaration confirming oil/gas drilling application to distinguish from general tubing
• Watch for customs scrutiny on wall thickness measurement; submit caliper or ultrasonic gauge reports
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