13-3/8 inch 54.5 lb/ft K-55 Casing
Heavy-duty seamless K-55 grade casing with 13-3/8 inch OD for intermediate oil well sections, constructed from nonalloy steel. Designed for high-pressure environments in drilling operations, meeting the >406.4mm diameter criterion of HTS 7304.29.20.80.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If alloy steel composition
Higher alloy content shifts to 7304.59 for large diameter alloy casing.
If imported as complete drill string assembly
When sold as assembled drilling equipment parts, may classify under oilfield machinery.
If designated as tubing rather than casing
Production tubing has different functional specs and statistical breakout.
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 hydrostatic test reports proving pressure rating compliance for customs verification
• Label with exact weight per foot and API grade to match statistical reporting requirements
• Avoid common pitfall of shipping with couplings attached, which may require parts classification
Related Products under HTS 7304.29.20.80
9-5/8 inch 40 lb/ft L-80 Casing
Seamless steel casing pipe with 9-5/8 inch outside diameter and 40 lb/ft weight, made from L-80 grade nonalloy steel for oil and gas drilling operations. Exceeds 406.4 mm (16 inches) OD requirement and classified as drill casing under 7304.29 due to its seamless construction and specific use in wellbore support.
20 inch 94 lb/ft J-55 Surface Casing
Extra-large 20-inch OD J-55 grade seamless casing used for surface conductor strings in offshore and onshore drilling. Nonalloy steel construction meets HTS 7304.29.20.80 for large diameter oil/gas well casing.
18-5/8 inch 87.5 lb/ft L-80 Production Casing
Seamless 18-5/8 inch L-80 casing for production zones in oil wells, providing pressure containment post-drilling. Nonalloy steel with OD exceeding 406.4mm qualifies under HTS 7304.29.20.80 for drilling-related casing.
10-3/4 inch 45.5 lb/ft N-80 Tieback Casing
10-3/4 inch OD N-80 seamless steel tieback casing used to extend surface casing strings in deepwater operations. Though marginally over 406.4mm, its oil/gas drilling function places it in HTS 7304.29.20.80.
24 inch 133 lb/ft Heavy Wall Casing
24-inch OD extra heavy wall seamless casing for conductor pipe applications in harsh drilling environments. Nonalloy steel construction for OD >406.4mm falls squarely under HTS 7304.29.20.80.
30 inch 150 lb/ft Conductor Casing
Massive 30-inch OD seamless conductor casing for initial hole support in large bore oil/gas wells. Nonalloy steel meeting the >406.4mm requirement of HTS 7304.29.20.80 for drilling casing.