Tube

Steel tubeGalvanized pipe outside A simple, inexpensive external galvanized pipe. The utility of new technologies outside the galvanized pipe, including the tube wall and the pipe inner wall, outer wall of the tube above a layer of zinc coating to set. The utility of new technologies set the outer tube only zinc coating, saving resources can significantly reduce costs; the utility of new technologies can be used to produce a variety of water pipeline, gas pipeline or other pipeline accessories. Reason Zinc chemical lively higher than iron, electrochemical corrosion occurs, the first corrosion is zinc rather than iron, zinc oxide and relatively compact, can prevent further oxidation. So, usually galvanized steel has good corrosion resistance. To improve the corrosion resistance of steel pipe, steel pipe for general galvanizing. Galvanized and hot galvanized steel galvanized sub-two, hot dip galvanized zinc thickness, galvanized, low cost, not a very smooth surface. Oxygen blowing pipe: used for blowing oxygen steel pipe, generally with small diameter welded steel pipe, size eight by the 3/8-2 inch. With 08,10,15,20 or 195-Q235 of steel produced, in order to prevent corrosion, something to be aluminized. Impact on the performance of galvanized steel elements (1) carbon; the higher carbon content, just the higher the hardness, but its plasticity and toughness of the worse. (2) sulfur; is harmful debris in steel, sulfur content of steel at high temperature for high pressure processing, the easy to brittle fracture, usually called the hot brittleness. (3) P; enable plasticity and toughness of steel decreased significantly, particularly at low temperatures is even more serious, a phenomenon called cold brittleness. In the high-quality steel, sulfur and phosphorus should be strictly controlled. But on the other hand look at low carbon steel containing high sulfur and phosphorus, can make it easy to cut off, to improve the cutting of steel can be beneficial. (4) Mn; can increase the strength of steel, can weaken and eliminate the adverse effects of sulfur, and can increase the hardenability of steel, high manganese content of high-alloy steel (high manganese steel) has a good wear resistance and other physical properties. (5) silicon; it can improve the hardness, but decrease the plasticity and toughness, electrical steel used in a certain amount of silicon, can improve the soft magnetic properties. (6) W; can increase the red hardness of steel and thermal strength of, and to improve the wear resistance of steel. (7) chromium; can improve the steel hardenability and wear resistance of steel to improve corrosion resistance and anti-oxidation. To improve the corrosion resistance of steel pipe, the ordinary steel (clarinet) for zinc. Galvanized steel sub-zinc galvanized steel and two kinds of electric, hot dip galvanized zinc thickness, electro-galvanized, low cost, it has galvanized steel.