Plastic Piling is a structural, typically interlocking, profiled sheet designed to be driven into the ground to retain (support), exclude (barrier) or simply provided a hard edge (erosion control or scour protection).
Yes, I will repeat that, plastic piling can be driven using a wide range of equipment, handheld, post drivers, compactor plates and of course piling equipment.
There are several names used for sheet piles made from synthetic materials. Plastic piling is a generic term, most commonly used in the UK, associated to any sheet pile, made from uPVC or composite materials. The vast majority of plastic piling is made from recycled uPVC and so often called PVC sheet piling (PVC sheet piles) or for our American audience vinyl sheet piling.