Certain rigid plastic pipe products — particularly PVC pipe from specific countries — have been subject to antidumping and countervailing duty orders. The scope of any active order is defined by the product description and country of origin in the order itself. Importers should check the US International Trade Commission and Commerce Department databases for current orders covering their specific pipe type before finalizing sourcing decisions.

US construction and plumbing codes commonly require compliance with ASTM standards (e.g., ASTM D1785 for PVC pressure pipe) and NSF/ANSI 61 certification for potable-water contact. Importers should obtain test reports and certification marks from the manufacturer and confirm that the pipe's dimensional schedule, pressure rating, and compound formulation match the applicable standard, as non-conforming product may be rejected at the job site even if it clears customs.