Super Duplex Stainless Welded Large Pipe
Super duplex 2507 stainless steel longitudinally welded pipe, 24-inch OD, extreme corrosion resistance for seawater injection lines. Classifies under HTS 7305.31.60.10 specifications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as alloy steel bar
Semi-finished alloy products classified in Chapter 72.
If sanitary/sterile finish
Pharmaceutical grade tubes use specific sanitary subheadings.
If other high-strength alloys
Different alloy compositions use alternate alloy steel codes.
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Import Tips & Compliance
• Ferrite content (40-60%) verification via metallographic examination
• Charpy impact test results at -46°C for subsea qualification
• HIC/SSCC resistance certificates for sour service environments
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