The Spiral Pipe Material: Q235-demand material according to customer needs. The Spiral Pipe standard basis: SY/T5037 standard production and testing. Length Length is usually: 12000mm, also can produce different length of the pipe. Also referred to as a cylinder or spiral of the spiral body. The outer diameter of the helical tube is about 30 nm, an inner diameter of about 10 nm, the adjacent helical pitch of about 11 nm. Solenoid per circumference surrounded by 6 nucleosomes and H1 histone is located in the inner surface of the solenoid chamber plays an important role to maintain the structure of the helical tube. 10 nm nucleosome fiber spiral form 30 nm crude fiber, and further compressed to six times the length of the DNA. The the spiral characteristics: Longitudinal production process is simple, high production efficiency, low cost, rapid development. The strength of the spiral welded pipe is generally higher than longitudinally welded pipes, can narrow the billet production of large diameter welded pipe, billet production of different diameters of the same width of the welded pipe can also be used. However, compared with the same length as the straight seam pipe, the increase in length of the weld 30 to 100%, and a lower production speed. Therefore, most of the smaller caliber welded pipe straight seam welded, spiral welded large diameter pipe they use. Spiral and its standard classification: pressure transmission fluid spiral submerged arc welded spiral steel pipe (SY5036-83) is mainly used to transport oil, natural gas pipeline; pressure transmission fluid with spiral seam high frequency welded spiral steel pipe (SY5038-83 ), high frequency welding lap welding method for pressure transmission fluid spiral seam high frequency welding spiral steel pipe. Spiral steel pipe pressure ability, good plasticity, easy welding and machining molding; generally low pressure liquid delivery spiral submerged arc welded spiral steel pipe (SY5037-83), using double-sided automatic submerged arc welding, or single-sided welding into the legal system for general low pressure liquid delivery such as water, gas, air and steam with spiral submerged arc welded steel pipe. www.hbthgg.com www.maimoguanjian.com www.thgangguan.com www.hbbgc.com www.pvdfgc.com www.hbbengguan.com www.naimogd.com