Cold-Rolled Seamless Steel Instrument Tubing
Precision cold-rolled seamless tubing of nonalloy steel, 0.75-inch OD x 0.049-inch wall, used for instrumentation and control lines in industrial gauges. Falls under HTS 7304.31.60.50 as other cold-drawn circular seamless steel tube. Fractional sizes conform to ASTM A213/A269 standards.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stainless steel construction
Stainless steel seamless tubes classify under 7304.4 headings.
If pre-installed in complete instruments
As integral part of finished measuring instruments, shifts to Chapter 90.
Not sure which classification is right?
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Import Tips & Compliance
• Specify 'mechanical tubing' not 'instrumentation' to avoid 7304.31.30.50 reclassification
• Cleanliness certifications help prove suitability without implying finished article status
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