h3nos3 acid

For key and important parts with tensile strength greater than 1034Mpa, the stress should be removed at 200±10℃ for more than 1 hour before plating, and for carburized or surface hardened parts, the stress should be removed at 140±10℃ for more than 5 hours. The cleaning agent used for cleaning shall have no effect on the binding force of the coating and no corrosion on the substrate. Acid activation Acid activation solution should be able to remove corrosion products and oxide film (skin) on the surface of parts without excessive corrosion on the matrix.

Barbed wire can be used to prevent livestock theft, for one thing, because the surface is covered with sharp spikes that make it difficult to get through the barbed wire. On the other hand, because livestock generally have the habit of collision, the use of barbed rope in the circle makes the livestock dare not rush to collision with the barbed rope, so as to save the user’s cost.

1, barbed rope protection net center line along the road within the land boundary 20 to 50 cm set.

We must have a certain understanding of the hexagonal network, we are the beautiful shape of the hexagonal network, more than the appearance of the hexagonal network is very beautiful, in fact, the practical value of survival is very high. To introduce the relevant information should be very clearly know the highway guardrail net, hexagonal wire netting in all kinds of fence netting, in the value of the high-speed on the road more MaoJian, it not only be used in all kinds of road, in a sports ball games venue and try our best to take care of landslides, also has reached very matter effectiveness.

The material of small hexagonal mesh is the same as that of other hexagonal mesh, which is generally made of low carbon steel wire, stainless steel wire and galvanized steel wire as raw materials by the hexagonal mesh machine.

By plastic wrapped hook mesh made of purse Seine breathable and light transmittance is very good, can completely ensure the normal growth of poultry; Plastic wrapped hook mesh itself has elasticity, flexibility is strong can prevent poultry hit in the fence caused damage; For the cultivation of plastic wrapped hook mesh outstanding advantage is very good corrosion resistance, can prevent the erosion of poultry feces and cleaning Seine air oxidation corrosion, longer service life, lower cost. Hook net factory’s new production of decorative hook net wide application field, decorative hook net can be used as a bottle decoration net.

The application of cold wire drawing is very wide today. What problems need to be paid attention to in the acceptance of cold wire drawing in galvanizing plant?

Small and medium-sized cat cage, dog cage and fence are mostly pure wire welding, wire diameter is generally between 2-5mm. Of course, the larger the cage, the thicker the wire, because the larger cage has to withstand more force.

From the point of view of spray, spray blade gill net (PVC blade gill net, coated blade gill net) is also called spray blade barbed wire, spray blade barbed wire is the blade barbed wire produced in the future, to carry out anti-rust treatment. Spray surface treatment to make it has quite good anti-corrosion ability, beautiful appearance, good waterproof effect, easy construction, economic and practical outstanding characteristics. Plastic sprayed blade barbed rope is a surface treatment method of spraying plastic powder on blade barbed rope in process.