Corrosion insulation spiral pipe manufacturers, Ruijie Pipe (certification), spiral steel pipe manufacturer

Corrosion insulation spiral pipe manufacturers, Ruijie Pipe (certification), spiral pipe manufacturers Ruijie provided by Tianjin Pipe Company Limited. Ruijie Tianjin Steel Pipe Co. (www.rjggjt.com) is specialized in the "spiral steel pipe, corrosion steel pipe, insulation pipe, welded pipe," the business, the company adhering to the "honesty, hard service" concept, to provide you with the most quality products and services. Welcome to inquire! Contact: pay by blog. How to identify quality spiral steel pipe? The first aspect is probably because of the poor quality of steel products caused by the strength of the mass production decline, they now face major steel products will exist throughout the longitudinal folding marks, of which this spiral steel pipe products, once applied to the very important areas of Hebei Engineering spiral steel pipe manufacturers, will occur because of a bending process cracking phenomenon, which causes irreparable adverse impact on the quality of construction applications. The second aspect can spiral steel products from the smoothness of the surface to be identified, if consumers see present on the surface of steel products like hemp face a variety of defects, then this steel products can be defined as a low-quality products. There are some steel products, although most of the area of ??the surface is very smooth, but the local area has a scarring of the phenomenon, which shows steel products in raw materials may be doped with a lot of application of Chinese magazine, there may be steel pipe production equipment too old to leave the defect in the surface. There is a spiral steel pipe products produced by the process if the cross-section is elliptical, so the quality of such steel products are to be considered. In the process of applying anti-corrosion insulation spiral pipe manufacturers, the main stress direction of the spiral steel pipe spiral steel pipe manufacturer Cangzhou, that indeed equivalent axial direction of pipe defect length smaller than a straight seam pipe; secondly, because the pipeline are rolled steel, toughness have a greater isotropic CVN values ??in the rolling direction along the perpendicular to the rolling direction than CVN value three times higher. As in pipe wall plus anti-corrosion coating, can increase the loop resistance, adding corrosion current; an external DC power supply, so that the soil pipe constitutes a negative potential, constitute cathodic protection, can eliminate the potential difference between the anode and cathode, anode and cathode from essentially abort the process aborted.