13-3/8 inch 54.5 ppf Q-125 Stainless Steel Casing Tubing
Seamless duplex stainless steel tubing (13-3/8 inch OD) rated Q-125 for surface casing in high-pressure oil and gas wells. Used to line boreholes during drilling operations, meeting API 5CT specifications. Large diameter >406.4 mm qualifies for HTS 7304.24.60.75 as stainless steel oilfield tubing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If externally threaded couplings attached
Tubing with integral connections may classify as 'casing with attached fittings' in 7305.
If not specifically for oil/gas drilling
General stainless steel seamless tubes shift to Chapter 72 stainless headings.
If having attached couplings
Tubing imported with couplings uses different statistical breakouts within 7304.24.
Not sure which classification is right?
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Import Tips & Compliance
• Obtain third-party inspection certificates confirming seamless construction (no welds visible via NDT)
• Declare exact grade (Q-125) and yield strength in commercial invoice to prevent undervaluation disputes
• For sour service applications, include NACE MR0175 compliance docs to support classification
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