Also known as spiral or helix spiral steel pipe, is a low-carbon steel or low-alloy structural steel strip at a certain helix angle (called molding angle) rolled into a tube, and the tube from the spiral seam welding characteristics : Longitudinal production process is simple, high efficiency, low cost, rapid development. Spiral Welded Longitudinal generally higher than the spiral steel pipe manufacturer, can narrow the billet production of large diameter spiral welded steel pipe Hebei billion in gold, you can also use the same width of the billet production of different pipe diameters. However, compared with the same length of straight seam pipe, weld length of 30 to 100%, and lower production rate. Therefore, smaller diameter pipe is mostly a straight seam welded, large diameter spiral welded pipe is mostly used. To be made, it can produce a large-diameter pipe with a narrow strip. Process operating parameters should not be used directly as a pressure pipeline design conditions, to consider the fluctuations of process operation, the factors affecting the connected device, such as environmental impact, and in the process operating parameters on the basis of a certain safety margin given as a design criteria. Design conditions mentioned here mainly refers to design pressure and temperature. Spiral steel pipe design pressure: When shall not be less than the normal operating pressure under the most demanding conditions by the internal pressure (or external pressure) and temperature constituted. The most harsh conditions: is lead pipe and piping components nominal maximum wall thickness or maximum level conditions. Design pressure is determined: Consider the medium hydrostatic pressure and other factors spiral pipe size diameter, should generally be slightly higher than the design pressure (or) maximum working pressure under the most demanding conditions of external pressure and temperature constituted. a. design pressure spiral pipe components under normal circumstances to determine the general spiral steel pipe, in order to facilitate operational, may wish to adopt this approach in the pressure vessel, an increase of a factor in margin pressure on the basis of the corresponding work. Spiral Pipe piped steam must be cautious. Golden spiral steel pipe _ _ Hebei billion diameter spiral pipe size provided by the Hebei billion gold piping. Gold Pipe Manufacturing Co., Ltd. Hebei billion (www.yijinguanjian.com) in the insulation joints, insulating flange, flanges, elbows, head, tee, head, Stone, steel and other industries have a higher visibility, credibility Operating both quality service, welcome to inquire, or consult our "Business League call" it!