HDPE Spiral Wound PipeThese pipes are made from steel-plastic composite strip materials, spiral-welded (extrusion-welded on the overlap surface), with smooth and flat inner walls, available in sizes from DN200 to DN2600mm. This type of pipe boasts advantages such as corrosion resistance, lightweight, easy installation, high flow capacity, and a long service life (50 years), making it a suitable replacement for high-energy-consuming materials (cement, cast iron, glass steel pipes, ceramics, etc.) and is an environmentally friendly green product.