fiber glass pipe: 1.ISO9000 2.leak proof 3.competitive ... specifications 5.Best quality&service Supplier evaluation strength (BV authentication)fiber glass pipe features:- this pipeline not open ditch, construction pace- ... polyester resin, fiberglass roving in, surface blanket, short cut carpet, quartz sand, etcMolding process: fiber winding processSpecifications: DN 400mm ~ DN3600mmPressure level: 0 ...