Heavy Expanded Metal or Heavy Duty Expanded Metal, also known as Tortoise-shaped Expanded Metal, is reinforced compared with regular diamond shaped expanded metal. It's ideal for uses in plant, ship making, mineral sifting, flooring, grating, groove cover, conveying, side passage for conveyor and crane, fence and decoration of building. Our automatic heavy type expanding machines and our well-trained workers ensure our finished products with even size, level and flat surface.