|Tonnes of piping sold, thousands of tm.||150||180||229||175|
|Net turnover, thousands of euros||194.928||278.065||407.952||350.451|
|EBITDA , thousands of euros||-15.488||6.707||41.373||42.237|
|EBITDA / Sales(%)||-7,9||2,4||10,1||12,1|
|Operating outcome, millions of euros||-42,6||-16,8||15||17,6|
|Investment in tangible and intangible fixed assets, millions of euros||25||33||28||45|
|Total assets, thousands of euros||578.979||641.815||662.183||633.693|
|Capital and reserves, thousands of euros(%)||178.275||227.069||245.107||235.384|
|Net financial debt, millions of euros(%)||195||167||172||182|
*For purposes of comparison with financial 2016 the distribution and automotive businesses are presented as operations discontinued in 2015.
 Calculated as operating outcome after eliminating the effect of provision for amortisation and impairment of tangible fixed assets.