The different spacing of the thorn rope is mainly in order to save costs to consider, because if they are too close, then obviously a little waste of resources, but the installation is too sparse will not work. Usually the bottom spacing is about 10cm, and the top is up to 20cm, this is because the higher the place is more difficult to climb over, usually more than one meter without the help of tools it is difficult for ordinary people to climb over, and the bottom because of the relatively tight can prevent personnel from drilling in the past.
It’s not clear why friends would want to use building nets for floor heating. What is its advantage in the floor heating project, the role of steel wire mesh is convenient for construction. Building mesh can better fix the pipe, conducive to the construction of the floor, improve efficiency. Anti-cracking function. The building network can improve the bearing capacity of the foundation of the insulation board, the thicker the diameter of the building steel wire, the greater the bearing capacity, effectively prevent the appearance of cracks and cracks of steel wire mesh can improve the thermal shrinkage and shrinkage of cement, strengthen the tensile strength of cement, improve the quality of the heating project.
Cold galvanized, generally speaking, do not need heating, galvanized amount is little, this galvanized parts are easy to fall off in wet environment. Hot dip galvanizing, also known as hot dip galvanizing, is to melt the zinc ingot at high temperature, put some auxiliary materials in, and then dip the metal structural parts into the galvanized groove, so that the metal members are attached to a layer of zinc layer. The advantage of hot dip galvanized is that its anticorrosion ability is strong, the adhesion and hardness of galvanized layer is better.
Generally, galvanized wire used for welding is required to have a certain hardness. After acceptance of galvanized wire, the first thing to do is to feel the hand, and the other thing is to test on the machine. Because the average user does not have testing equipment, it is also very inconvenient to test on the machine. Use a micrometer to measure the diameter of galvanized wire evenly, and keep it about 0.02mm above and below the contract signing standard, with neat appearance, no leakage plating and no mess.
A pet carrier can be used as an indoor and outdoor pet house. The dog cage is equipped with a fixed food basin and drinking water, and the foot plate pet cage rubber pad has bayonets on four sides to be collated. According to the cage size can be splicing, cutting, disassembly is convenient, easy to clean, can solve the puppy in the ordinary cage foot clamping problem, prevent the puppy in the development of adverse reactions. The dividers are breathable and comfortable, and can be used as heat shields for pets in summer. A puppy with small feet that does not hold its feet or pinch its feet.
1. Principle. Because zinc does not change easily in dry air, and in humid air, the surface can form a very dense film of zinc carbonate, which can effectively protect the interior from corrosion. And when the coating is damaged for some reason and the matrix is not too large, the zinc and steel matrix form a micro cell, so that the fastener matrix becomes the cathode and is protected. It is widely used in automobile transportation and other industries, but what is needed is the trivalent chromium passivation layer, zinc nickel alloy plating closed coating, reduce the harmful and toxic layer of hexavalent chromium passivation.
The anticorrosion of these raw materials is very different, and the use of life is not the same. Niu LAN net cold galvanized, also known as electroplating, galvanized quantity is very little, rust in rain, but the price is cheap, the use of life in 5-6 years. Hot dip galvanizing (low zinc and high zinc) on the amount of zinc in 60 grams to 400 grams, the service life is about 20-60 years, corrosion resistance is general.
The wire rod should be normalized or soxhlet processed, instead of spheroidal annealing for standard large ones. Soxhlet process is widely used in the heat treatment of the center, especially the products before drawing. Avoid decarbonization during heat treatment. After heat treatment, sulfuric acid or hydrochloric acid pickling is used to remove iron sheet. The coating (see smooth carrier) can be dip-lime, phosphating, borax treatment or copper plating.
The quality of hot-dip galvanized barbed wire is only in the surface of the wire attached to the galvanized layer, and with the reason of the chemical reaction, the surface of the zinc layer will gradually lose its role because of the oxidation reaction, this situation is more prominent in humid areas. And because after all, the steel wire will rust, so the quality of hot-dip galvanized barbed wire is certainly not up to the level of stainless steel barbed wire.
