BS 4504 WELDING NECK FLANGE PN6, PN10, PN16, PN25, PN40 British Standard BS 4504 : Chikamu 3.1 : 1989 - Circular Flanges for Pipes, Valves and Fittings (PN Yakagadzirirwa), Tsanangudzo yeSimbi Flanges.Izvi zvinovhara maflange mumazita ekudzvinyirirwa pakati pePN 2.5 kusvika PN 40 uye saizi yemazita kusvika kuD ...
Verenga zvimwe