pressure supply pipeline rhe velebit or pressure pipe of the reversible hydropower plant velebit (obrovac, croatia)

pressure supply pipeline rhe velebit pipe reversible hydropower plant obrovac croatia tlacni dovodni cjevovod ili tlacna cijev reverzibilne hidroelektrane muskovci hrvatska industry equipment industrial gas fuel tube factory valve power oil energy technology production construction metal steel pump engineering connection gasoline transportation refinery infrastructure water system heating business line station work natural cylinder chemical control distribution petrochemical tank arrow compressor plumbing piping ecology manufacturing environment petroleum liquid high barrel