Steel pipe piles are suitable for terminal construction. The diameter ranges from 400 mm to 2000 mm, and the most commonly used is 1800 mm.


Special-shaped steel pipe can better adapt to special conditions of use, save metal and improve the productivity of spare parts manufacturing. It is widely used in aviation, automobile, shipbuilding, mining machinery, agricultural machinery, construction, textile and boiler manufacturing. Cold drawing, welding, extrusion and hot rolling are the production methods of special-shaped pipes, among which cold drawing has been more widely used. The utility model is arc or circular when the steel pipe piles in the cofferdam are used with each other. It can play the role of water, soil, sand and so on. The utility model has novel design, simple structure, convenient use, easy overlap and good sealing performance. Including non-circular cross-section profile, and other wall thickness, variable wall thickness, along variable diameter and variable wall thickness length, cross-section symmetry and asymmetry. Such as square, rectangular, conical, trapezoidal, spiral tube, etc.


The steel pipe pile is made of steel pipe, orifice and groove. The vertical pipe wall of the pipe diameter is connected with the orifice. The cross section of the opening is a box with stiffeners on one side of the wall. The diameter of the right side of the pipe wall and the radius of the vertical position of the vertical joint are for the I-shaped groove.