Hot-rolled steel sheet piles: The length is generally limited, mainly 9 meters, 12 meters, 15 meters, 18 meters, 400 wide, 600 wide mostly, and other widths are less. Only Luxembourg steel sheet piles have more width specifications. At present, it is mainly used in cofferdams with many temporary projects and relatively deep water, as well as special permanent projects. The water-stopping effect is generally better than that of cold bending. The market stock is larger and easier to find. The current price is slightly higher than that of cold bending.