... original plates, by cutting, incision, opening, edging and other processes of deep processed product customer requirements.Its ... fields of platforms, walkways, trestle bridge, ditch cover, covers, ladders, fences and railings. Series 1 (pitch 30mm) steel ... granaries, chemical plants, highways, airports and terminal platforms, walkways and drains cover, stair step and so on. Tooth steel grating which ...