3-1/2 Inch 13.3 ppf Surface Casing
3-1/2 inch OD 13.3 lb/ft J-55 surface casing, seamless, wall ≥12.7 mm for shallow oil/gas wells. Protects freshwater zones during initial drilling. HTS 7304.29.20.20 specs met.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-drilling conduit use
General steel tube use falls outside oil/gas drilling heading.
If corrugated or threaded mechanical tubing
Different profiles exclude from round seamless casing.
If with attached flanges
Flange integration principal use becomes fittings.
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Import Tips & Compliance
• Mark joints with API grade stamps visible for customs inspection
• Provide borehole design specs if queried for drilling-specific use
• Insure against buckling risks in transit for heavy wall sections
Related Products under HTS 7304.29.20.20
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