Profile: Howrah Ferrous Limited is a manufacturer of drainage solutions specializing in grey and ductile iron casting. We are an ISO 9001:2008, ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certified company. Our trench and inlet system include gratings and embed frames in one complete set for economical and simple installation on construction sites. Standard-duty systems are available for pedestrian loads as well as heavy-duty systems for demanding vehicular traffic. 65 mm recess height is provided for fixing cement, blocks, or tiles.