drywall screws to hang tv

Latest articles



Links

  • 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.

  • Atmospheric relative humidity At the same temperature, the percentage of atmospheric water vapor content and its vapor saturation content is called relative humidity. Below a certain relative humidity, the corrosion rate of metal antirust oil is small, while above this relative humidity, the corrosion rate increases sharply.

  • Hexagonal


  • Post time: 16-06-22
  • Combination of fence mesh and maintenance network restrictions: Residential fence net, garden villa, private swimming pool, courtyard lawn, city scene, municipal transportation, sports venues, airports and ports, offices and schools, military equipment, prison farms, industrial parks, tourist resorts, distribution centers, The specifications and parameters of the fence mesh are as follows: 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400 (mm) : 2000, 2500, 3000 mesh spacing (mm).

  • 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.


  • Post time: 06-04-23
  • The most obvious gap in a short time is the cross section of this piece, hot dip galvanized barbed wire because it is the surface anti-corrosion treatment, so in the cross section of this piece will appear rust, and stainless steel barbed wire because the internal raw materials and surface raw materials are consistent, so there is no such situation.

  • Cold galvanized is in the plating tank through the current unidirectional zinc gradually plated on the metal surface, production speed is slow, uniform coating, thin thickness, usually only 3-15 microns, bright appearance, poor corrosion resistance, generally a few months will rust. Compared with electrogalvanizing, hot galvanizing has lower production cost and less impact on the environment than electroplating.

  • good

  • The top of the wall is installed with ordinary galvanized barbed rope for protection. Although the effect is better, the style is not beautiful. In recent years, it has been gradually replaced by blade barbed rope. First of all, the protection ability itself does not have any point of emphasis, can not use its own climbing at the same time, due to the relatively large volume of the intention to turn over the personnel caused no small difficulty, the whole body has a spike is very easy to be scratched or hook clothes, so in this aspect of the protection ability is better. Moreover, the style of spiral cross is more beautiful than the original single style, which is more suitable for some high-grade apartments and other external walls of the fence, at the same time, it will not cause the feeling of imprisonment in the interior.

  • 2. When there are channels, ponds, lakes and other natural barriers on the side of the road, there is no need to worry about people and animals entering and illegally occupying the road land.
  • Positive twist: Twist two or more pieces of wire into a double wire rope and then wrap the wire around the double wire. It’s called a positive twist cord which is a common double strand cord.
  • When galvanized wire out of the light plating should be carried out light treatment. The bath temperature of galvanized wire should be controlled well. Galvanized wire, also known as hot dip zinc and hot dip galvanized, is an effective way of metal corrosion prevention, mainly used in various industries of metal structure facilities. It is to immerse the steel parts after rust removal into the molten zinc liquid at about 500℃, so that the surface of the steel member is attached with zinc layer, so as to play the purpose of anticorrosion.

  • 2. Start running water. Make sure the water is warm so the cat won’t put up a fight.
  • Twisting the barbed wire: twisting the barbed wire in the opposite direction of the main wire. That is, it’s not twisted in one direction. This is called the twisted cord.

  • Material: low carbon steel wire
  • barbed

  • Low and medium carbon steel wire is used as raw material, with good surface gloss, uniform zinc layer, strong adhesion, corrosion resistance and so on. Available: diameter 1.60mm-4mm (16#-33#) cold plating wire; Diameter 6.40mm-0.81mm(8#-21#) black iron wire, changed wire. It is mainly used in communication equipment, medical equipment, weaving net, brush, steel cable, filter, high-pressure pipe, construction, crafts and other industries.

  • Twine: Twist two or more wires into a double wire rope and then wrap the twine around the double wire. It’s called a straight twist cord which is the common double strand cord.
  • Galvanized

  • 4. Rinse the foam off your cat thoroughly.
  • Therefore, when zinc reaches saturation in the solid melt, the two elements of zinc and iron atoms diffuse with each other, and the zinc atoms diffused into (or infiltrated into) the iron matrix migrate in the lattice of the matrix and gradually form an alloy with iron, while the iron diffused into the molten zinc liquid forms an intermetallic compound FeZn13 with zinc and sinks into the bottom of the hot-dip galvanized pot, that is, zinc slag. When the workpiece is removed from the zinc leaching solution, the surface of the pure zinc layer is formed, which is hexagonal crystal, and its iron content is not more than 0.003%.


  • Post time: 08-02-23
  • 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.


  • Post time: 09-09-22
  • Large rolls of galvanized wire in oxygen violently extinguished, spark, and sodium block, magnesium strip in oxygen extinguished, no spark phenomenon. This phenomenon is determined by the composition of galvanized wire. The galvanized wire used in the experiment is pig iron or steel wire, pig iron and steel are iron and carbon alloy, containing iron and carbon two elements of complex material. Carbon in galvanized wire will produce carbon dioxide when extinguished, solid into gas, volume will shrink rapidly.