13-3/8 Inch OD Stainless Drill Casing Tube
Seamless stainless steel tube, 339.7 mm OD with 9.2 mm wall, serving as drill casing in oilfield operations to stabilize boreholes. Meets HTS 7304.24.40.30 criteria: seamless stainless casing/tubing for oil/gas drilling, specified OD range, thin wall.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designated as tubing rather than casing
Oil/gas tubing (vs casing) uses 7304.24.20 subheading, even identical specs, based on drilling end-use distinction.
If supplied as semi-finished hollow profiles
Unfinished seamless stainless steel hollow sections for further processing classify under Chapter 72 as semi-manufactures.
If for industrial high-pressure applications outside drilling
If not specifically for oil/gas drilling, stainless tubes shift to 7307.19 for other mechanical tubing uses.
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Import Tips & Compliance
• Obtain manufacturer's declaration of seamless process; comply with Buy America for US projects
• Avoid pitfall: confusing with tubing (different pressure ratings)—specify 'casing' use in docs
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API 5CT L80 Stainless Casing 10-3/4 Inch
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