Steel plastic composite straight pipe advantages: 1, Retains the rigidity and strength of traditional metal pipe, far superior to plastic pipes, plastic pipes 2, Smooth wall, small friction resistance without fouling, more beautiful and luxurious wall. 3, Light weight, good toughness, impact resistance, high strength; applicable temperature is -30 ℃ ~ 100 ℃ 4, Pipe connections can be twisted wire, socket, flanges, grooves, welding, etc., in various ways, saving labor. 5, Pipe joints and thermal expansion coefficient is small, more secure 6, Reasonable price-performance ratio, lower total cost, more economical than brass and stainless steel pipe