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Descendants
Code Description
27221 Tubs, canons i perfils buits, d'acer
27222 Accessoris de canonada de fosa per a tubs d'acer
Correspondence with CNPA-96 (es)
Code Description
2722 Tubos de acero
Correspondence with CCPA-96 REV.1 (ca)
Code Description
2722 Tubs d'acer