In order to improve the corrosion resistance of the steel pipe, the average steel pipe is galvanized. Galvanized steel pipes are divided into two types: hot, galvanized and electroplating.
The hot -dip galvanized and galvanized layer is thick, the cost of galvanizing is low, and the surface is not very smooth.
Nominal wall thickness: mm20252.8, 3.2, 3.5, 3.8, 4.0, 4.5.
Coefficients: C1.064, 1.051, 1.045, 1.040, 1.036, 1.034 \ 1.032, 1.028.
Note: Steel mechanical properties are important indicators to ensure the final performance (mechanical performance) of steel. It depends on the chemical composition and thermal treatment system of steel. In the steel pipe standards, according to different use requirements, stretching performance (tensile strength, yield strength or yield point, elongation point), hardness, toughness indicators, and high and low temperature performance required by users. The number of galvanized pipe steel: Q215A; Q215B; Q235A O235B
Galvanized steel pipe is a welding steel pipe with armal immersion or electroplating layer on the surface. In order to improve the corrosion resistance of the steel pipe, the general steel pipe (black pipe) is galvanized. Dalgrus is called black iron pipes, and galvanized is called white iron pipes. Galvanizing can increase the corrosion resistance of steel pipes and extend the service life.
Galvanized steel pipes are divided into cold galvanized steel pipes and hot -dip galvanized steel pipes. At present, hot -dip galvanized steel pipes are widely used on fire, power and highways. In addition to the pipelines of general low pressure fluids such as water, gas, and oil, it is also used as oil well pipes and oil pipes for the oil industry, especially the marine oil field, and the chemical coking equipment oil heating device, condensed cooler, and coal distillation oil exchange exchange The tube of the instrument, as well as the supporting rack of the trestle pipe pipe and the mining tunnel.
