Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6816001
Is Reference of Steel pipes and tubes-en#Sense
Tubes et tuyaux en acier-fr#Sense
Stalen buizen en pijpen-nl#Sense
Stålrør-da#Sense
Stahlrohre-de#Sense