How to Slow Down the Aging Speed of Spiral Tube?

Spiral pipe(SSAW steel pipe) is a kind of steel pipe that is often used in our daily life. It has good anti-corrosion performance. Spiral pipes have relatively high environmental requirements when they are stored. They cannot be stored in factories and mines with harmful gases or dust, and are not suitable for too humid environments. Spiral pipes also have many precautions during use.

Weeds and all sundries should be removed on the site, and steel should be kept clean. It should not be stacked with acid, alkali, salt, cement and other corrosive materials in the warehouse. Different types of steel should be stacked separately to prevent confusion and contact corrosion. Large section steel, rails, shame steel plates, large diameter steel pipes, forgings, etc. can be stacked in the open air.

Small and medium-sized steel bars, wire rods, steel bars, medium-diameter steel pipes, steel wires and wire ropes, etc., can be stored in a well-ventilated material shed, but must be under the pad, some small steel, thin steel, steel strip, silicon steel sheet, small diameter Or thin-walled steel pipes, various cold-rolled and cold-drawn steels, and high-priced, easily corrosive metal products can be stored in the warehouse. The warehouse should be selected according to geographical conditions. Generally, ordinary closed warehouses are used, that is, there are roofs and walls. The doors and windows are tight.

For warehouses equipped with ventilation devices, the warehouses are required to be ventilated on sunny days and closed to prevent moisture on rainy days, and always maintain a suitable storage environment. Because spiral steel pipes are prone to corrosion during placement and use, generally engineering steel pipes will be treated with anti-corrosion before use. This kind of anti-corrosion processing is the professional equipment processing of spiral steel pipe company. For example, adding 3PE coating, epoxy coal tar pitch, epoxy resin and other anticorrosive coatings on the outer wall of the pipeline can increase the loop resistance and reduce the corrosion current; the external DC power supply causes the spiral tube to cause a negative potential to the soil, forming a cathodic protection, which can eliminate yin and yang The extreme potential difference fundamentally stops the process of cathode and anode. Anti-corrosion coating rule of law, cathodic protection rule of law. But once the anti-corrosion coating is damaged, the exposed iron part will accelerate local corrosion. Therefore, the combination of anti-corrosion coating and cathodic protection is the method to cure both the surface and the root cause, which is economical and effective. Cathodic protection must be used when the anti-corrosion coating is used.

Tips: Straight seam steel pipe is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. Straight seam steel pipes can be divided into high-frequency straight seam steel pipes (ERW Pipe) and submerged arc welded straight seam steel pipes (LSAW) according to the production process. Straight seam welded pipe has simple production process, high production efficiency, low cost and rapid development.

ASTM A53 Grade B is more popular than other grades. These pipes can be bare pipes without any coating, or it may be Hot-Dipped or Zinc-Coated and manufactured by Welding or by a Seamless manufacturing process. In Oil and Gas, A53 grade pipes are used in the structural and non-critical applications.

Steel pipe industry practitioners at Permanent Steel Manufacturing Co.,Ltd, knowledge enthusiasts