9-5/8 inch 40 lb/ft L-80 13Cr Stainless Steel Casing
Seamless stainless steel oil well casing pipe with 9-5/8 inch outside diameter, 40 lb/ft weight, L-80 grade with 13% chromium for corrosion resistance in sour gas environments. Threaded and coupled ends for secure connections in drilling operations. Classifies under 7304.24.30.45 due to its stainless steel composition, seamless construction, and specified diameter range for oil/gas drilling casing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of carbon or alloy steel instead of stainless
Non-stainless steel casing falls under 7304.29, same form and diameter but different base material.
If outside diameter exceeds 406.4 mm
Larger diameter casing shifts to 7304.24.60 subheading while remaining stainless threaded casing.
If imported as unfinished threading or couplings separate
Unthreaded or uncoupled pipes classify under Chapter 73 hollow profiles rather than finished drill casing.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify API 5CT certification and exact grade (e.g
• L-80 13Cr) matches invoice to avoid reclassification
• Include mill test certificates (MTC) showing stainless steel chemistry and seamless process
• Confirm outside diameter measurement between 285.8-406.4mm; slight deviations may shift to adjacent subheadings
Related Products under HTS 7304.24.30.45
10-3/4 inch 55 lb/ft P110 Stainless Steel Casing
High-pressure P110 grade seamless stainless steel casing with 10-3/4 inch OD and 55 lb/ft weight, designed for deep oil well applications. Features premium BTC (Buttress Threaded and Coupled) connections for superior tensile strength. Meets HTS 7304.24.30.45 as stainless steel, seamless, threaded/coupled drill casing in the 285.8-406.4 mm diameter range.
8-5/8 inch 32 lb/ft SM-SS95 Duplex Stainless Casing
Duplex stainless steel (SM-SS95) seamless casing pipe, 8-5/8 inch OD, 32 lb/ft, optimized for CO2 injection wells with superior pitting resistance. Threaded and coupled with VAM TOP connection system. Falls under 7304.24.30.45 for stainless steel drill casing with OD 285.8-406.4 mm, seamless construction.