hat
en griyaj pou pon, dan vise ponts, gwo sèvis twou kouvèti te aplike sou couvert, route, lakou, elatriye, a sèvi ak non kouvèti pou drenaj twou, fil fè fossé, tren, ak de lè noyo, cho-plonje-idée fin ki itilize kòm tyole. Griyaj twou kouvèti konpoze de lòt ankadreman ak griyaj baryè. Li kapab fè classés pou jan de T, ou menm ak M selon estrikti.
eng
steel grating for bridge decks , Heavy Duty trench cover is applied on walkway, carriageway, courtyard etc; used as cover for drainage trench, wire ditch, subway, and air pit, hot-dip-galvanizing finish is used as antiseptic. Grating trench cover is composed of fixed frame & movable grating. It can be classified to Type T, U and M according to structures.