Low-cost processing: hot-dip galvanized anti-rust lower cost than the cost of other paint coating; Galvanizing alloy layer mainly depends on the thickness of the silicon content of the steel chemical composition, the rough degree of the size of the cross-sectional area of the steel surface of the steel, the temperature of the zinc pot, the zinc immersion time, the cooling speed, and the cold deformation. Difference between galvanized steel pipe and seamless steel pipe. Galvanized piping is connected with threaded fittings that may also introduce leaks into the plumbing if not properly fitted. This impedes the water flow and, in severe cases, may lead to burst pipes.
When used as water pipe , the zinc barrier coating tends to react to the minerals in the water, often causing plaque to build up inside of the pipe. 4, threaded pipe connections requiring high quality, especially for higher working pressure fire pipeline system, does not allow the tube trachoma, burrs and other defects threaded tolerance with the bad, but in the actual installation works, often due to pipe fittings amount of maintenance and rework caused by unqualified installation is very large, such as the use of this clamp connection technology, the entire piping system can significantly improve the quality of the installation. After more than DN50 galvanized steel pipe specifications, especially for DN100, DN125, DN150 and other large-sized pipes, even to have the construction experience, high-level team of construction, installation and construction are more difficult, and this clamp connection method can overcome these difficult because only a pipe clamp connection butt, butt clamps, tighten the nut. high-standard roofing sheets supplier China.
Galvanized steel pipe for water belongs to the seam welded steel pipe. In order to ensure the transmission medium process requirements and corrosion requirements, galvanized steel connection technology, the most widely used method is threaded connection. Surface coated or hot dip galvanized welded steel pipe can enhance corrosion resistance and prolong life.
Brinell hardness measurement principle is the test force F (N) with a certain size, the diameter D (mm) of hardened steel balls or carbide ball pressed into the surface of the metal under test, to maintain a predetermined time after the drop test force, the the indentation average diameter d (mm) measured with a reading microscope, and then the equation Brinell hardness HB value, or the value d from the prepared Brinell hardness table to detect HB Brinell hardness measurement method is suitable for cast iron, non-alloy, annealing and quenching and tempering steel, the determination should not be too hard, too small, too thin and the surface does not allow the larger indentation specimen or workpiece. The zinc provides a barrier against corrosion so that the pipe may be exposed to the outdoor environmental elements. It has been used used for water-supply pipes or as a strong tubing for outdoor applications.
It is also sometimes called galvanized iron pipe. Galvanized steel pipe is a steel pipe that has been coated with zinc. If you have galvanized plumbing and you find that your water pressure and/or volumes are low, this is the likely reason.