Spiral pipe advantages

Because spiral steel pipe heat transfer coefficient, compact, easy to clean, stain resistance, etc, in the boiler, quench boiler, a variety of petrochemical equipment in the heat exchanger, the heat exchanger has a very wide range of applications. Spiral steel pipe is the low carbon steel or low alloy carbon steel strip at a certain angle of spiral rolled into tube. Representing the ground with spiral seam welded together and then the tube is made, it can use a narrow strip production of large diameter steel pipe.

Spiral steel pipe is mainly used for oil and gas pipelines, outer wall with its specifications expressed. Spiral steel pipe with single-sided and double-sided welding welding, pipe should ensure that hydrostatic test, weld tensile strength and cold performance to meet the requirements. The ground heat combined with the construction of pile foundation has become the application of ground source heat pump technology, a new hot spot. In the current domestic and international small pile pipe applications, the main extension of the drill pipe and piling pipe U-shaped or W-shaped cloth tube technology. However, the use of U-and W-shaped piles buried piping configuration has less heat transfer area, easy to set gas pipe at the top of the pipe blockage shortcomings. The spiral has a higher heat transfer coefficient than the straight tube, can be arranged in the same space, a larger heat transfer area, more security features.

Therefore, we propose a pile spiral buried ground source heat pump system. Spiral in the production and the frequent use of some quality problems occur, in some aspects of normal use, the need for identification of the quality spiral, according to a certain performance test methods and, in actual use can have a significant role, then how to identify counterfeit spiral approach: appearance often pitted surface phenomenon. Generally the whole amount would be better proportionality, mainly taking into account the cumulative error and probability theory this problem. As shoddy coil manufacturers to pursue profits, rolling groove rolling most often exceeded. Surface is easy to produce scarring. The spiral steel quality uniform composition. The tonnage of high cold shear, cut head face smooth and neat, but shoddy material because material is poor, there are often cut off the meat head end of the phenomenon, that is uneven, and no metallic luster.