H40 Oil Well Tubing 4 inch
Seamless H40 grade non-alloy steel tubing, 4 inch (101.6 mm) OD with 8.0 mm wall thickness, for oil well production and casing strings. Precisely matches 7304.29.50.15 criteria for small-diameter, thin-walled seamless steel tubing in drilling.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If OD >114.3 mm
Tubing larger than 114.3 mm OD moves to 7304.29.10 for bigger casing sizes.
If precision welded construction
High-precision welded tubing can classify under 7306.30 if not qualifying as seamless.
If cold-drawn for mechanical tubing
Cold-drawn seamless tubes for machinery, not drilling, fall under 7304.31.
Not sure which classification is right?
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Import Tips & Compliance
• Certify chemical composition to confirm non-alloy status (< specific alloy thresholds)
• Declare quantity in meters or tons with exact specs to match statistical reporting
• Inspect for straightness tolerances pre-shipment to comply with API specs
Related Products under HTS 7304.29.50.15
API 5CT N80-1 Oilfield Tubing
Seamless steel tubing made from non-alloy N80-1 grade steel, used as production tubing in oil and gas wells to convey oil or gas from the reservoir. It has an outside diameter not exceeding 114.3 mm and wall thickness ≤9.5 mm, classified under 7304.29.50.15 as non-alloy steel tubing for drilling applications.
J55 Casing Tubing 2-3/8 inch
Seamless J55 grade non-alloy steel tubing with 2-3/8 inch (60.3 mm) OD and wall thickness of 4.83 mm, designed for oil well casing and production tubing in drilling operations. Meets API 5CT standards for oil/gas drilling, fitting 7304.29.50.15 due to size specs and non-alloy composition.
L80 Type 1 Production Tubing 2-7/8 inch
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K55 Drill Tubing 3-1/2 inch
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N80Q Non-Alloy Tubing 2-3/8 inch EUE
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P110 Tubing 3 inch Thin Wall
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