T95 Sour Service Tubing
T95 grade tubing qualified for sour service per NACE standards, used in H2S-rich gas reservoirs. HTS 7306.29.81.50 captures this as other drilling tubing with specialized metallurgy. Hardness controlled below 22 HRC for sulfide stress cracking resistance.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified primarily by alloy steel composition
Certain high-alloy tubes may fall under Chapter 72 headings.
Not sure which classification is right?
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Import Tips & Compliance
• Include NACE MR0175/ISO 15156 certificates mandatory for sour service claims
• Segregate from non-sour materials during transport to maintain integrity
Related Products under HTS 7306.29.81.50
K55 Surface Casing
K55 grade surface casing to stabilize shallow formations during initial drilling phases of oil and gas wells. Under HTS 7306.29.81.50 as other casing, provides structural support before deeper strings. Common 13-3/8" diameter for conductor applications.
API 5CT N80-1 Casing Tubing
Seamless steel tubing conforming to API 5CT N80-1 specifications, designed for use as casing or tubing in oil and gas drilling operations to line boreholes and transport fluids. It falls under HTS 7306.29.81.50 as 'other' casing and tubing of iron or steel, not specified elsewhere in the subheading for drilling applications. The tubing has a wall thickness suitable for high-pressure downhole environments.
J55 API Grade Oilfield Tubing
Welded steel tubing meeting API 5CT J55 grade standards, used primarily as production tubing in oil and gas wells to convey hydrocarbons from reservoir to surface. Classified under HTS 7306.29.81.50 as 'other' tubing for drilling operations, excluding premium grades or specific threading types listed elsewhere. Features threaded connections for downhole deployment.
L80 Type 13CR Corrosion-Resistant Tubing
13% chromium steel tubing in L80 grade per API 5CT, engineered for corrosive environments in sour gas wells as production tubing. Falls under HTS 7306.29.81.50 as other casing/tubing for oil/gas drilling, distinguished by its corrosion resistance but not qualifying for specialized stainless subheadings. Used to protect against H2S and CO2 damage downhole.
2-7/8" OD 6.5ppf N80 Production Tubing
Precisely sized N80 grade tubing with 2-7/8 inch outer diameter and 6.5 pounds per foot weight, standard for oil well production strings. HTS 7306.29.81.50 covers this as other tubing for gas drilling, featuring EUE threading for field connections. Essential for zonal isolation and fluid flow control.
P110 High-Collapse Casing
P110 grade high-collapse casing designed to withstand formation pressures during oil well cementing and completion phases. Classified in HTS 7306.29.81.50 as other casing for drilling, with enhanced collapse resistance for challenging geologies. Typically features buttress threading for superior torque capacity.