API 5DP Alloy Steel Drill Pipe 4-1/2 inch OD
Seamless alloy steel drill pipe with 4-1/2 inch (114.3 mm) outside diameter and wall thickness of 8.5 mm, designed for oil and gas drilling operations. Meets API 5DP specifications for heavy-weight drill pipe used in rotary drilling systems. Classified under 7304.23.6030 due to its seamless construction, alloy steel composition, OD ≤168.3 mm, and wall thickness ≤9.5 mm.
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 steel rather than alloy steel
Carbon steel drill pipe falls under the carbon steel subheading 7304.19, not alloy steel 7304.23
If outside diameter exceeds 168.3 mm
Larger OD drill pipe >168.3mm is classified in the next statistical suffix 7304.23.6040
If imported as assembled drill string components with tool joints
Complete drilling assemblies with attached fittings may classify as parts of drilling machinery
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
• Verify API 5DP/5CT certification and include mill test certificates (MTC) in documentation
• Confirm alloy steel composition meets ASTM A335 or equivalent standards; carbon steel shifts to 7304.19
• Check wall thickness measurement method (ultrasonic vs caliper) to avoid misclassification over 9.5mm
Related Products under HTS 7304.23.60.30
Heavy Weight Drill Pipe HWDP 3-1/2 inch Alloy Steel
3-1/2 inch (88.9 mm) OD heavy weight drill pipe (HWDP) made from seamless alloy steel tubing with 7.8 mm wall thickness for transition zones in drilling strings. Features upset ends for premium tool joint connections. Falls under HTS 7304.23.6030 as seamless alloy steel drill pipe with specified dimensions.
4 inch OD Alloy Steel Oil Well Casing Pipe
Seamless alloy steel casing pipe with 4 inch (101.6 mm) outside diameter and 9.2 mm wall thickness, used to line oil and gas wells during drilling. Premium grade P110 alloy steel for high-pressure environments. Classified in 7304.23.6030 for seamless alloy steel OD ≤168.3 mm, wall ≤9.5 mm.
3-1/2 inch Alloy Steel Tubing for Gas Drilling
Seamless 3-1/2 inch OD alloy steel tubing with 8.0 mm wall thickness for gas well drilling operations. Grade 80 material suitable for sour service environments. HTS 7304.23.6030 applies to this seamless alloy drill tubing dimension range.
2-7/8 inch Drill Stem Tubing Alloy Steel
2-7/8 inch (73 mm) OD seamless alloy steel drill stem tubing with 7.5 mm wall thickness for slim hole drilling applications. High-strength grade for extended reach drilling. Perfect fit for HTS 7304.23.6030 specifications.
5 inch OD Intermediate Casing Alloy Pipe
5 inch (127 mm) OD seamless alloy steel intermediate casing with 9.0 mm wall thickness for production hole sections in oil wells. L80 grade with controlled yield strength. Classified under 7304.23.6030 for small diameter alloy steel oilfield tubulars.
API 5CT T95 Alloy Drill Tubing 4-1/2 inch
API 5CT T95 grade seamless alloy steel drill tubing, 4-1/2 inch OD, 8.7 mm wall thickness for high-pressure sour gas drilling. Enhanced collapse resistance for deep wells. HTS 7304.23.6030 designation for these dimensions.