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